WTW Multi 3320 Operating Manual WTW_Multi_3320
User Manual: Pdf WTW_Multi_3320
Open the PDF directly: View PDF 
.
Page Count: 108
| Download | |
| Open PDF In Browser | View PDF |
OPERATING MANUAL ba77053d01 pH 6.09 3 15.0 2 08:3.2014 7 25.0 USB outp °C ut 332 0 Multi 3320 METER FOR 2 SENSORS (PH/ORP/D.O./COND) For Sales & Service Contact 2650 E. 40th Ave. • Denver, CO 80205 Phone 303-320-4764 • Fax 303-322-7242 1-800-833-7958 www.geotechenv.com 02/2014 Multi 3320 For the most recent version of the manual, please visit www.WTW.com. Copyright 2 © Weilheim 2014, WTW GmbH Reproduction in whole - or even in part - is prohibited without the express written permission of WTW GmbH, Weilheim. Printed in Germany.. ba77053d01 02/2014 Multi 3320 Contents Multi 3320 - Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1 1.2 2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 2.2 3 4.2 4.3 4.4 4.5 ba77053d01 02/2014 8 8 8 8 9 9 9 9 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3.1 Inserting the batteries. . . . . . . . . . . . . . . . . . . . . 10 10 10 11 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.1 5 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.1 Safety information in the operating manual . . . . . 2.1.2 Safety signs on the meter . . . . . . . . . . . . . . . . . . 2.1.3 Further documents providing safety information . Safe operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.2 Requirements for safe operation . . . . . . . . . . . . . 2.2.3 Unauthorized use . . . . . . . . . . . . . . . . . . . . . . . . . Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1 3.2 3.3 4 Multi 3320 meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 General operating principles . . . . . . . . . . . . . . . . . . . . . . 12 4.1.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1.3 Status information (meter) . . . . . . . . . . . . . . . . . 13 4.1.4 Socket field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.4.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 15 4.4.2 Measured value display . . . . . . . . . . . . . . . . . . . 16 4.4.3 Menus and dialogs . . . . . . . . . . . . . . . . . . . . . . . 16 4.4.4 Elements in menus and dialogs . . . . . . . . . . . . . 16 4.4.5 Example 1 on navigation: Setting the language. 17 4.4.6 Example 2 on navigation: Setting the date and time 19 Channel display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.5.1 Display of several sensors in the measuring mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 pH value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3 Contents Multi 3320 5.1 5.2 6 6.2 7.2 8.2 36 36 38 38 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.1 Measuring the ion concentration . . . . . . . . . . . . 7.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2.2 When to calibrate? . . . . . . . . . . . . . . . . . . . . . . . 7.2.3 Calibration (ISE Cal) . . . . . . . . . . . . . . . . . . . . . . 7.2.4 Calibration standards . . . . . . . . . . . . . . . . . . . . . 7.2.5 Calibration data. . . . . . . . . . . . . . . . . . . . . . . . . . 39 39 41 42 42 42 42 45 45 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 8.1.1 Measuring D.O.. . . . . . . . . . . . . . . . . . . . . . . . . . 47 8.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . 49 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 8.2.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . 50 8.2.2 When to calibrate? . . . . . . . . . . . . . . . . . . . . . . . 50 8.2.3 Calibration procedures . . . . . . . . . . . . . . . . . . . . 50 8.2.4 Calibration in water vapor-saturated air (air calibration vessel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 8.2.5 Calibrating with a Comparison meas. (OxiComp). . 51 8.2.6 Calibration data. . . . . . . . . . . . . . . . . . . . . . . . . . 53 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 9.1 4 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.1 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 6.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . ORP calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dissolved oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 8.1 9 34 Ion concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7.1 8 22 22 24 25 25 25 25 28 31 32 ORP voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 6.1 7 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.1 Measuring the pH value . . . . . . . . . . . . . . . . . . . 5.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.2 When do you have to calibrate? . . . . . . . . . . . . . 5.2.3 Automatic calibration (AutoCal) . . . . . . . . . . . . . 5.2.4 Manual calibration (ConCal) . . . . . . . . . . . . . . . . 5.2.5 Calibration points . . . . . . . . . . . . . . . . . . . . . . . . 5.2.6 Calibration data. . . . . . . . . . . . . . . . . . . . . . . . . . 5.2.7 Continuous measurement control (CMC function) ............................. Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 ba77053d01 02/2014 Multi 3320 Contents 9.2 9.1.1 Measuring the conductivity. . . . . . . . . . . . . . . . . 55 9.1.2 Measuring the temperature . . . . . . . . . . . . . . . . 57 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 9.2.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . 57 9.2.2 When to calibrate? . . . . . . . . . . . . . . . . . . . . . . . 57 9.2.3 Determining the cell constant (calibration in control standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 9.2.4 Calibration data . . . . . . . . . . . . . . . . . . . . . . . . . 58 10 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 10.1 Measurement settings. . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1.1 Settings for pH measurements. . . . . . . . . . . . . . 10.1.2 Buffer sets for calibration . . . . . . . . . . . . . . . . . . 10.1.3 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 10.1.4 Settings for ORP measurements . . . . . . . . . . . . 10.1.5 Settings for ISE measurements . . . . . . . . . . . . . 10.1.6 Settings for D.O. sensors . . . . . . . . . . . . . . . . . . 10.1.7 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 10.1.8 Settings for conductivity measuring cells . . . . . . 10.1.9 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 10.1.10 Temperature compensation . . . . . . . . . . . . . . . . 10.1.11 Setting the TDS factor . . . . . . . . . . . . . . . . . . . . 10.2 Sensor-independent settings . . . . . . . . . . . . . . . . . . . . . 10.2.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.2.2 Data storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.3 Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.3.1 Resetting the measurement settings. . . . . . . . . 10.3.2 Resetting the system settings . . . . . . . . . . . . . . 61 61 62 64 65 66 68 69 70 72 72 73 74 74 75 75 75 77 11 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 11.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Automatic data storage at intervals .............. 11.3 Measurement data storage . . . . . . . . . . . . . . . . . . . . . . . 11.3.1 Editing the measured value storage. . . . . . . . . . 11.3.2 Erasing the measurement data storage . . . . . . . 11.3.3 Measurement dataset . . . . . . . . . . . . . . . . . . . . 11.3.4 Storage locations . . . . . . . . . . . . . . . . . . . . . . . . 78 79 81 81 83 83 83 12 Transmitting data (USB interface). . . . . . . . . . . . . . . . 84 12.1 Options for data transmission . . . . . . . . . . . . . . . . . . . . . 84 12.2 Connecting a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 12.3 MultiLab Importer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 13 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 86 13.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 13.1.1 General maintenance activities . . . . . . . . . . . . . 86 ba77053d01 02/2014 5 Contents Multi 3320 13.1.2 Replacing the batteries . . . . . . . . . . . . . . . . . . . . 13.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 87 87 87 14 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 14.1 14.2 14.3 14.4 14.5 pH/ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dissolved oxygen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 90 91 92 93 15 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 15.1 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 15.1.1 pH/ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.1.2 ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.1.3 Oxi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.1.4 Cond . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.2 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 94 95 95 97 99 16 Firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 17 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 18 Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 6 ba77053d01 02/2014 Multi 3320 Overview 1 Overview 1.1 Multi 3320 meter The Multi 3320 meter enables you to perform measurements (pH, U, ISE, conductivity, dissolved oxygen (D.O.)) quickly and reliably. The Multi 3320 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications. 3 pH 6.09 3 15.1 1 08:3.2008 7 25.0 USB outp 2 °C ut 1 332 0 1 Keypad 2 Display 3 Socket field 1.2 Sensors A measuring system ready to measure consists of the Multi 3320 meter and a suitable sensor. Suitable sensors are pH electrodes, ion selective electrodes (ISE), ORP electrodes, dissolved oxygen (D.O.) sensors and conductivity measuring cells. Information on available sensors is given on the Internet and in the WTW catalog, "Laboratory and field instrumentation". ba77053d01 02/2014 7 Safety instructions Multi 3320 2 Safety instructions 2.1 Safety information 2.1.1 Safety information in the operating manual This operating manual provides important information on the safe operation of the meter. Read this operating manual thoroughly and make yourself familiar with the meter before putting it into operation or working with it. The operating manual must be kept in the vicinity of the meter so you can always find the information you need. Important safety instructions are highlighted in this operating manual. They are indicated by the warning symbol (triangle) in the left column. The signal word (e.g. "CAUTION") indicates the level of danger: WARNING indicates a possibly dangerous situation that can lead to serious (irreversible) injury or death if the safety instruction is not followed. CAUTION indicates a possibly dangerous situation that can lead to slight (reversible) injury if the safety instruction is not followed. NOTE indicates a possibly dangerous situation where goods might be damaged if the actions mentioned are not taken. 2.1.2 Safety signs on the meter Note all labels, information signs and safety symbols on the meter and in the battery compartment. A warning symbol (triangle) without text refers to safety information in this operating manual. 2.1.3 Further documents providing safety information The following documents provide additional information, which you should observe for your safety when working with the measuring system: • Operating manuals of sensors and other accessories • Safety datasheets of calibration or maintenance accessories (such as buffer solutions, electrolyte solutions, etc.) 8 ba77053d01 02/2014 Multi 3320 Safety instructions 2.2 Safe operation 2.2.1 Authorized use This meter is authorized exclusively for pH, ISE, ORP, dissolved oxygen and conductivity measurements in a laboratory environment. Only the operation and running of the meter according to the instructions and technical specifications given in this operating manual is authorized (see section 15 TECHNICAL DATA, page 94). Any other use is considered unauthorized. 2.2.2 Requirements for safe operation Note the following points for safe operation: • The meter may only be operated according to the authorized use specified above. • The meter may only be supplied with power by the energy sources mentioned in this operating manual. • The meter may only be operated under the environmental conditions mentioned in this operating manual. • The meter may only be opened if this is explicitly described in this operating manual (example: Inserting the batteries). 2.2.3 Unauthorized use The meter must not be put into operation if: • it is visibly damaged (e.g. after being transported) • it was stored under adverse conditions for a lengthy period of time (storing conditions, see section 15 TECHNICAL DATA, page 94). ba77053d01 02/2014 9 Commissioning Multi 3320 3 Commissioning 3.1 Scope of delivery MeterMulti 3320 4 batteries 1.5 V Mignon type AA Short instructions CD-ROM with – USB drivers – detailed operating manual – Software MultiLab Importer 3.2 Power supply The Multi 3320 is supplied with power in the following ways: Battery operation (4 x alkaline manganese batteries, type AA) USB operation via a connected USB-B cable 3.3 Initial commissioning Perform the following activities: Insert the supplied batteries Switch on the meter (see section 4.2 SWITCHING ON THE METER, page 14) Set the date and time (see section 4.4.6 EXAMPLE 2 ON NAVIGATION: SETTING THE DATE AND TIME, page 19) 10 ba77053d01 02/2014 Multi 3320 Commissioning 3.3.1 Inserting the batteries You can operate the meter either with normal batteries or with rechargeable batteries (Ni-MH). In order to charge the batteries, an external charging device is required. 1 2 1 Screws 2 Battery compartment 1. Unscrew the two screws (1) on the underside of the meter. 2. Open the battery compartment (2) on the underside of the meter. CAUTION Make sure that the poles of the batteries are positioned correctly. The ± signs on the batteries must correspond to the ± signs in the battery compartment. ba77053d01 02/2014 3. Place four batteries (type Mignon AA) in the battery compartment. 4. Close the battery compartment (2) and tighten the screws (1). 5. Set the date and time (see section 4.4.6 EXAMPLE 2 ON NAVIGATION: SETTING THE DATE AND TIME, page 19). 11 Operation Multi 3320 4 Operation 4.1 General operating principles 4.1.1 Keypad In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g.) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g. ). : : : : Softkeys providing situation dependent functions, e.g.: /[USB output]: Outputs data to the USB interface /[USB output]: Configures the automatic data output to the USB interface : Switches the meter on or off : Selects the measured parameter / Quits the settings : : Calls up the calibration procedure Displays the calibration data STO : : Saves a measured value manually Opens the menu for the automatic save function RCL : : Displays the manually stored measured values Displays the automatically stored measured values <><>: <_><_>: Menu control, navigation Increments, decrements values Increments, decrements values continuously F1 F2 AR 12 : : Opens the menu for measurement settings / confirms entries Opens the menu for system settings Freezes the measured value (HOLD function) Switches the AutoRead measurement on or off ba77053d01 02/2014 Multi 3320 Operation 4.1.2 Display 4 5 3 pH 6.093 2 25.0 °C 1 AutoCal TEC HOLD AR 15.02.2014 14:15 USB output 6 7 8 9 1 Status information (sensor) 2 Measured value (with unit) 3 Measured parameter 4 Continuous measurement control (CMC function) 5 Channel display: Plug position of the sensor 6 Sensor symbol (calibration evaluation, calibration interval) 7 Measured temperature (with unit) 8 Status information (meter) 9 Softkeys and date + time 4.1.3 Status information (meter) AR Stability control (AutoRead) is active HOLD Measured value is frozen ( key) Batteries are almost empty Data are automatically output to the USB-B interface at intervals ba77053d01 02/2014 13 Operation Multi 3320 4.1.4 Socket field 5 1 2 4 3 1 pH electrode 2 Temperature sensor 3 Oxygen sensor or conductivity measuring cell 4 Mini USB-B interface 5 Service interface CAUTION Only connect sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting). Almost all customary sensors fulfill these conditions. 4.2 1. Switching on the meter Switch the meter on with . The meter performs a self-test. The display shows the manufacturer's logo while the self-test is being performed. The measured value display appears. pH 6.949 25.0 °C 15.02.2014 14:15 14 USB output ba77053d01 02/2014 Multi 3320 Operation 4.3 1. Automatic switch-off Switching off Switch the printer off with . The instrument has an automatic switch-off function in order to save the batteries (see section 10.2.1 SYSTEM, page 74). The automatic switchoff function switches off the meter if no key is pressed for an adjustable period. The automatic switchoff function is not active if the communication cable is connected if the Automatic data storage function is active, or with automatic data transmission Display illumination The meter automatically switches off the display illumination if no key is pressed for 30 seconds. The illumination is switched on with the next keystroke again. You can also generally switch the display illumination on or off (see section 10.2.1 SYSTEM, page 74). 4.4 Navigation The principles of navigation in menus and dialogs are explained in the following sections. 4.4.1 Operating modes The instrument has the following operating modes: Operating mode Description Measuring The measurement data of the connected sensor are shown in the measured value display Calibration The course of a calibration with calibration information, functions and settings is displayed Storage in memory The meter stores measuring data automatically or manually Transmitting data The meter transmits measuring data and calibration records to a USB-B interface automatically or manually. Setting The system menu or a sensor menu with submenus, settings and functions is displayed Only those displays and functions are available in the active operating mode that are currently being required. ba77053d01 02/2014 15 Operation Multi 3320 4.4.2 Measured value display In the measured value display, open the setting menus with . The current functions of the softkeys are shown on the display. Use (short pressure) to open the menu for calibration and measurement settings for the displayed measured parameter. Use (long keystroke (approx. 2 s) to open the Storage & config menu with the sensor-independent settings. Use the keys of the keypad to carry out further functions such as storage or calibration (see section 4.1.1 KEYPAD, page 12). These functions are not available in other operating situations. 4.4.3 Menus and dialogs The menus for settings and dialogs in procedures contain further subelements. To select a subelement, use the <><> keys. The current selection is displayed with a frame. To make further settings, switch to the next higher menu level with [Back]. Use to return to the measured value display. 4.4.4 Elements in menus and dialogs Submenus The name of the submenu is displayed at the upper edge of the frame. Submenus are opened by confirming with . Example: System General Interface Clock Service information Reset Back 15.02.2014 14:15 Settings Settings are indicated by a colon. The current setting is displayed on the right-hand side. The setting mode is opened with . Subsequently, the setting can be changed with <><> and . Example: 16 ba77053d01 02/2014 Multi 3320 Operation General Language: Beep: Illumination: Contrast: Switchoff time: Temperature unit: Stability control: Back Deutsch Off On 50 % 1h °C On 15.02.2014 14:15 Functions Functions are designated by the name of the function. They are immediately carried out by confirming with . Example: Display the Calibration record function. pH Calibration record Calibration data storage Buffer: One point calibration: Calibration interval: Unit for slope: TEC Yes 7d mV/pH i 2.00 4.01 7.00 10.01 Back 15.02.2014 14:15 Messages Information is marked by the i symbol. It cannot be selected. Example: pH Calibration record Calibration data storage Buffer: One point calibration: Calibration interval: Unit for slope: TEC Yes 7d mV/pH i 2.00 4.01 7.00 10.01 Back 4.4.5 1. ba77053d01 02/2014 15.02.2014 14:15 Example 1 on navigation: Setting the language Press the key. The measured value display appears. The instrument is in the measuring mode. 17 Operation Multi 3320 pH 6.949 25.0 °C 15.02.2014 14:15 2. USB output Using , open the Storage & config menu. The instrument is in the setting mode. Storage & config System Data storage Back 15.02.2014 14:15 3. Select the System submenu with <><>. The current selection is displayed with a frame. 4. Open the System submenu with . System General Interface Clock Service information Reset Back 18 15.02.2014 14:15 5. Select the General submenu with <><>. The current selection is displayed with a frame. 6. Open the General submenu with . ba77053d01 02/2014 Multi 3320 Operation General Language: Beep: Illumination: Contrast: Switchoff time: Temperature unit: Stability control: 15.02.2014 14:15 Back 7. Deutsch Off On 50 % 1h °C On Open the setting mode for the Language with . General Language: Beep: Illumination: Contrast: Switchoff time: Temperature unit: Stability control: Deutsch Off On 50 % 1h °C On 15.02.2014 14:15 Back 8. Select the required language with <><>. 9. Confirm the setting with . The meter switches to the measuring mode. The selected language is active. 4.4.6 Example 2 on navigation: Setting the date and time The meter has a clock with a date function. The date and time are shown in the measured value display. When storing measured values and calibrating, the current date and time are automatically stored as well. The correct setting of the date and time and date format is important for the following functions and displays: Current date and time Calibration date Identification of stored measured values. Therefore, check the time at regular intervals. After a fall of the supply voltage (empty batteries), the date and time are reset to 01.01.2011 00, 00:00 hours. ba77053d01 02/2014 19 Operation Multi 3320 The date format can be switched from the display of day, month, year (dd.mm.yyyy) to the display of month, day, year (mm/dd/yyyy or mm.dd.yyyy). 1. In the measured value display: Using , open the Storage & config menu. The instrument is in the setting mode. 2. Select and confirm the System / Clock menu with <><> and . The setting menu for the date and time opens up. 3. Select and confirm the Time menu with <><> and . The hours are highlighted. Clock Date format: Date: Time: Back 20 dd.mm.yyyy 15.02.2014 14:15:25 15.02.2014 14:15 4. Change and confirm the setting with <><> and . The minutes are highlighted. 5. Change and confirm the setting with <><> and . The seconds are highlighted. 6. Change and confirm the setting with <><> and . The time is set. 7. If necessary, set the Date and Date format. The setting is made similarly to that of the time. 8. To make further settings, switch to the next higher menu level with [Back] . or Switch to the measured value display with . The instrument is in the measuring mode. ba77053d01 02/2014 Multi 3320 Operation 4.5 Channel display The Multi 3320 manages the connected sensors and displays which sensor is plugged to which connection. pH Channel display Display of the plug position for the respective parameter The filled bar indicates for each connected sensor to which plug position of the meter it is connected. 6.949 24.8 °C 15.02.2014 14:15 4.5.1 USB output Display of several sensors in the measuring mode The measured values of the connected sensors can be displayed in the following ways: Clear display of all connected sensors Detailed display of one sensor (e.g. incl. CMC feature with pH sensors) With the softkey you can very easily switch between the two display types. The suitable softkey is displayed depending on the operating situation. pH ϰ 02/2014 6.966 25.0 °C 0.479 1/cm 25.0 °C 15.02.2014 14:15 ba77053d01 pH 6.966 25.0 °C USB output 15.02.2014 14:15 USB output 21 pH value Multi 3320 5 pH value 5.1 Measuring 5.1.1 Measuring the pH value NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. To ensure the high measurement accuracy of the measuring system, always measure with a calibrated electrode (see section 5.2 CALIBRATION, page 25). 1. Connect the pH electrode to the meter. 2. If necessary, select the measured parameter with . 3. When measuring without temperature sensor: – Temper the test sample, or measure the current temperature. – Enter the temperature value in the menu. 4. Immerse the pH electrode in the test sample. The measured value is checked for stability (automatic stability control). The display of the measured parameter flashes. 5. Wait for a stable measured value. The display of the measured parameter no longer flashes. pH 6.949 24.8 °C 15.02.2014 14:15 Stability control (AutoRead) & HOLD function USB output The stability control function (AutoRead) continually checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. The measured parameter flashes on the display as soon as the measured value is outside the stability range when the automatic Stability control is switched off. You can activate or switch off the automatic Stability control function (see section 10.2.1 SYSTEM, page 74). 22 ba77053d01 02/2014 Multi 3320 pH value 1. Freeze the measured value with . The [HOLD] status indicator is displayed. The HOLD function is active. You can terminate the Stability control function and the HOLD function with or at any time. 2. Using , activate the Stability control function manually. The [AR] status indicator appears while the measured value is assessed as not stable. A progress bar is displayed and the display of the measured parameter flashes. The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display of the measured parameter stops flashing. The current measurement data is output to the interface. Measurement data meeting the stability control criterion is marked by AR. You can prematurely terminate the Stability control function manually with at any time. If the Stability control function is prematurely terminated, the current measurement data are output to the interface without the AutoRead info. 3. Criteria for a stable measured value Using , start a further measurement with stability control. or Release the frozen measured value again with or . The [AR] status display disappears. The display switches back to the previous indication. The Stability control function checks whether the measured values are stable within the monitored time interval. Measured variable Time interval Stability in the time interval pH value 15 seconds Δ : better than 0.01 pH Temperature 15 seconds Δ : better than 0.5 °C The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer. ba77053d01 02/2014 23 pH value Multi 3320 5.1.2 Measuring the temperature For reproducible pH measurements, it is essential to measure the temperature of the test sample. You have the following options to measure the temperature: Automatic measurement of the temperature with the temperature sensor (NTC30 or Pt1000) integrated in the sensor. Measurement by an external temperature sensor. Manual determination and input of the temperature. The measuring instrument recognizes whether a suitable sensor is connected and automatically switches on the temperature measurement. The display of the temperature indicates the active temperature measuring mode: Temperature sensor Resolution of the temp. display Temp. measurement yes 0.1 °C Automatic with temperature sensor - 1 °C Manual If you wish to measure (or calibrate) without temperature sensor, proceed as follows: 24 1. Measure the current temperature of the test sample. 2. In the /pH/Man. temperature menu, set the temperature value with <><>. ba77053d01 02/2014 Multi 3320 pH value 5.2 5.2.1 Calibration Why calibrate? pH electrodes age. This changes the zero point (asymmetry) and slope of the pH electrode. As a result, an inexact measured value is displayed. Calibration determines and stores the current values of the zero point and slope of the electrode. Thus, you should calibrate at regular intervals. 5.2.2 When do you have to calibrate? After connecting a sensor Routinely within the framework of the company quality assurance When the calibration interval has expired 5.2.3 Automatic calibration (AutoCal) Make sure that in the sensor menu, Buffer menu, the buffer set is correctly selected (see 10.1.1 SETTINGS FOR PH MEASUREMENTS, PAGE 61). Use any one to five buffer solutions of the selected buffer set in ascending or descending order. Below, calibration with Technical buffers (TEC) is described. When other buffer sets are used, other nominal buffer values are displayed. Apart from that, the procedure is identical. If single-point calibration was set in the menu, the calibration procedure is automatically finished with the measurement of buffer solution 1 and the calibration record is displayed. 1. Connect the pH electrode to the meter. 2. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. ba77053d01 02/2014 3. In the measured value display, select the measured parameter pH or mV with . 4. Start the calibration with . The calibration display for the first buffer appears (voltage display). 25 pH value Multi 3320 pH Buffer -180.0 1 mV 24.8 °C AutoCal TEC 15.02.2014 14:15 5. Thoroughly rinse the electrode with deionized water. 6. Immerse the electrode in the first buffer solution. 7. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. 8. Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. pH Buffer 10.011 -180.0 mV 24.8 °C AutoCal TEC AR 15.02.2014 14:15 9. Wait for the end of the measurement with stability control or accept the calibration value with . The calibration display for the next buffer appears (voltage display). 10. If necessary, finish the calibration procedure as a single-point calibration with . The calibration record is displayed. For single-point calibration, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the zero point of the electrode. Continuing with twopoint calibration 26 11. Thoroughly rinse the electrode with deionized water. 12. Immerse the electrode in the second buffer solution. ba77053d01 02/2014 Multi 3320 pH value 13. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. 14. Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. pH Buffer 0.0 7.000 mV 24.8 °C AutoCal TEC AR 15.02.2014 14:15 Continuing with three- to five-point calibration 15. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with . The calibration display for the next buffer appears (voltage display). 16. If necessary, finish the calibration procedure as a two-point calibration with . The calibration record is displayed. 17. Thoroughly rinse the electrode with deionized water. 18. Immerse the electrode in the next buffer solution. 19. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. 20. ba77053d01 02/2014 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. 27 pH value Multi 3320 pH Buffer 180.0 4.010 mV 24.8 °C AutoCal TEC AR 15.02.2014 14:15 21. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with . The calibration display for the next buffer appears (voltage display). 22. If necessary, use to finish calibration or Continue calibrating using the next buffer with . Calibration is automatically completed after the last buffer of a buffer set has been measured. Then the calibration record is displayed. The calibration line is determined by linear regression. 5.2.4 Manual calibration (ConCal) Make sure that in the sensor menu, Buffer menu, the ConCal buffer set is selected (see section 10.1.1 SETTINGS FOR PH MEASUREMENTS, page 61). Use any one to five buffer solutions in ascending or descending order. If single-point calibration was set in the menu, the calibration procedure is automatically finished with the measurement of buffer solution 1 and the calibration record is displayed. 1. Connect the pH electrode to the meter. The pH measuring window is displayed. 2. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. 28 3. In the measured value display, select the measured parameter pH or mV with . 4. Start the calibration with . The calibration display appears (voltage display). ba77053d01 02/2014 Multi 3320 pH value pH Buffer 0.0 1 mV 24.8 °C ConCal 15.02.2014 14:15 5. Thoroughly rinse the electrode with deionized water. 6. Immerse the electrode in the first buffer solution. 7. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. 8. Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. pH Buffer 0.0 7.000 mV 24.8 °C ConCal AR 15.02.2014 14:15 9. Wait for the end of the measurement with stability control or accept the calibration value with . The calibration display for the setting of the nominal buffer value appears. pH Buffer 7.000 1 24.8 °C ConCal 15.02.2014 14:15 10. ba77053d01 02/2014 Set the nominal buffer value for the measured temperature with <><>. 29 pH value Multi 3320 11. Accept the set calibration value with . The calibration display for the next buffer appears (voltage display). 12. If necessary, finish the calibration procedure as a single-point calibration with . The calibration record is displayed. For single-point calibration, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the zero point of the electrode. Continuing with twopoint calibration 13. Thoroughly rinse the electrode with deionized water. 14. Immerse the electrode in the second buffer solution. 15. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. 16. Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. 17. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with . The calibration display for the setting of the nominal buffer value appears. pH Buffer 4.035 2 24.8 °C ConCal 15.02.2014 14:15 30 18. Set the nominal buffer value for the measured temperature with <><>. 19. Accept the set calibration value with . The calibration display for the next buffer appears (voltage display). 20. Finish the calibration procedure as a two-point calibration with . The calibration record is displayed. ba77053d01 02/2014 Multi 3320 pH value Continuing with three- to five-point calibration 21. Thoroughly rinse the electrode with deionized water. 22. Immerse the electrode in the next buffer solution. 23. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. 24. Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. 25. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with . The calibration display for the setting of the nominal buffer value appears. pH Buffer 9.958 3 24.8 °C ConCal 15.02.2014 14:15 26. Set the nominal buffer value for the measured temperature with <><>. 27. Accept the set calibration value with . The calibration display for the next buffer appears (voltage display). 28. Use to finish calibration or Continue calibrating using the next buffer with . After the fifth buffer has been measured the calibration is automatically finished. Then the calibration record is displayed. The calibration line is determined by linear regression. 5.2.5 Calibration points Calibration can be performed using one to five buffer solutions in any order (single-point to five-point calibration). The meter determines the following values and calculates the calibration line as follows: ba77053d01 02/2014 31 pH value Multi 3320 1-point Determined values Displayed calibration data Asy Zero point = Asy Slope = Nernst slope (-59.2 mV/pH at 25 °C) 2-point Asy Slp. 3-point to 5-point Asy Slp. Zero point = Asy Slope = Slp. Zero point = Asy Slope = Slp. The calibration line is calculated by linear regression. You can display the slope in the units, mV/pH or % (see section 10.1.1 SETTINGS FOR PH MEASUREMENTS, page 61). 5.2.6 Calibration data The calibration record is automatically transmitted to the interface after calibrating. Displaying the calibration data The calibration record of the last calibration is to be found under the menu item, / Calibration / Calibration record. To open it, press the key in the measured value display. Subsequently, you can transmit the displayed calibration data to the interface, e.g. to a PC, with the [USB output] key. Displaying the calibration data storage 32 The calibration records of the last calibrations (up to 10) are given in the menu, /Calibration / Calibration data storage. ba77053d01 02/2014 Multi 3320 pH value Menu item Setting/function Description Calibration / Calibration data storage / Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. Output the displayed calibration record to the interface with /[USB output]. Quit the display with / [Back] or . Switch directly to the measured value display with . Calibration / Calibration data storage / Output to USB Calibration evaluation - Outputs the calibration records to the interface. After calibrating, the meter automatically evaluates the calibration. The zero point and slope are evaluated separately. The worse evaluation of both is taken into account. The evaluation appears on the display and in the calibration record. Display Calibration record Zero point [mV] Slope [mV/pH] +++ -15 ... +15 -60.5 ... -58.0 ++ -20 ... <-15 or >+15 ... +20 >-58.0 ... -57.0 + -25 ... <-20 or >+20 ... +25 -61.0 ... <-60.5 or >-57.0 ... -56.0 - -30 ... <-25 or >+25 ... +30 -62.0 ... <-61.0 or >-56.0 ... -50.0 <-30 or >+30 <-62.0 or >-50.0 Clean the electrode according to the electrode operating manual Error Error Error elimination (see section 14 WHAT TO page 88) DO IF..., ba77053d01 02/2014 33 pH value Calibration record (example) Multi 3320 Multi 3320 Ser. no. 11292113 CALIBRATIONpH 15.02.2014 15:55 AutoCal TEC Buffer 1 Buffer 2 Buffer 3 Voltage 1 Voltage 2 Voltage 3 Temperature 1 Temperature 2 Temperature 3 Slope Asymmetry Sensor 4.01 7.00 10.01 184.0 mV 3.0 mV -177.0 mV 24.0 °C 24.0 °C 24.0 °C -60.2 mV/pH 4.0 mV +++ etc... 5.2.7 Continuous measurement control (CMC function) The Continuous Measurement Control (CMC function) facilitates to evaluate the current measured value instantly and definitely. After each successful calibration the scale of the pH measuring range is displayed in the measured value display. Here you can very clearly see whether or not the current measured value is in the calibrated part of the measuring range. 34 ba77053d01 02/2014 Multi 3320 pH value The following information is displayed: 1 2 pH 0 6.093 14 25.0 °C 15.02.2014 14:15 3 4 USB output 1 Measuring range for which a valid calibration is available (white). Measured values in this range are suitable for documentation. 2 Measuring range for which no valid calibration is available (shaded). Measured values in this range are not suitable for documentation. If necessary, calibrate the meter with buffers covering this measuring range. If the current measured value is outside the calibrated range, this area is shaded stronger. If a measured value is outside the measuring range pH 0 - 14, overflow arrows are displayed at the left or right edge of the measuring range. 3 Currently measured pH value (needle) 4 Marking lines for all nominal buffer values used with the last valid calibration The limits of the calibrated range are determined by the buffers used for calibration: Lower limit: Upper limit: ba77053d01 02/2014 Buffer with lowest pH value - 2 pH units Buffer with highest pH value + 2 pH units 35 ORP voltage Multi 3320 6 ORP voltage 6.1 Measuring 6.1.1 Measuring the ORP NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. 1. Connect the ORP electrode to the meter. 2. If necessary, select the U (mV) display with . 3. When measuring without temperature sensor: – Temper the test sample, or measure the current temperature. – Enter the temperature value in the menu. 4. Rinse the ORP electrode and immerse it in the test sample. The measured value is checked for stability (automatic stability control). The display of the measured parameter flashes. 5. Wait for a stable measured value. The display of the measured parameter no longer flashes. U 157.0 mV 24.8 °C 15.02.2014 14:15 Stability control (AutoRead ) USB output The stability control function (AutoRead) continually checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. You can activate or switch off the automatic Stability control function (see section 10.2.1 SYSTEM, page 74). The measured parameter flashes on the display as soon as the measured value is outside the stability range when you switch over between the measured parameters with . when the automatic Stability control is switched off. Criteria for a stable measured value 36 The Stability control function checks whether the measured values are stable within the monitored time interval. ba77053d01 02/2014 Multi 3320 ORP voltage Measured variable Time interval Stability in the time interval ORP 15 seconds Δ : better than 0.3 mV Temperature 15 seconds Δ : better than 0.5 °C The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer. Manually starting the stability control Irrespective of the setting for automatic Stability control (see section 10.2.1 SYSTEM, page 74) in the System menu, you can start the Stability control function manually at any time. 1. Freeze the measured value with . The [HOLD] status indicator is displayed. 2. Using , activate the Stability control function manually. The [AR] status indicator appears while the measured value is assessed as not stable. A progress bar is displayed and the display of the measured parameter flashes. The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display of the measured parameter stops flashing. The current measurement data is output to the interface. Measurement data meeting the stability control criterion is marked by AR. You can prematurely terminate the Stability control function manually with at any time. If the Stability control function is prematurely terminated, the current measurement data are output to the interface without the AutoRead info. 3. Freezing the measured value (HOLD function) ba77053d01 02/2014 Using , start a further measurement with Stability control. or Release the frozen measured value again with . The display switches to the measured value display. The [AR][HOLD] status display disappears. With the HOLD function, you can freeze the current measured value. The displayed measured value stops changing until you switch the HOLD function off. If the HOLD function is active, you can, e.g. start a manual measurement with stability control. 1. Freeze the measured value with . The [HOLD] status indicator is displayed. 2. Release the frozen measured value again with . The HOLD function is switched off. The [HOLD] status display disappears. 37 ORP voltage Multi 3320 6.1.2 Measuring the temperature For reproducible ORP measurements, it is essential to measure the temperature of the test sample. You have the following options to measure the temperature: Automatic measurement of the temperature by the temperature sensor (NTC30 or Pt1000) integrated in electrode. Measurement by an external temperature sensor. Manual determination and input of the temperature. The measuring instrument recognizes whether a suitable sensor is connected and automatically switches on the temperature measurement. The display of the temperature indicates the active temperature measuring mode: Temperature sensor Resolution of the temp. display Temp. measurement yes 0.1 °C Automatic with temperature sensor - 1 °C Manual If you wish to measure without temperature sensor, proceed as follows: 1. Measure the current temperature of the test sample. 2. Set the temperature value with <><>. or In the /U/Man. temperature menu, set the temperature value with <><>. 6.2 ORP calibration ORP electrodes are not calibrated. You can, however, check ORP electrodes by measuring the ORP of a test solution and comparing the value with the nominal value. 38 ba77053d01 02/2014 Multi 3320 Ion concentration 7 Ion concentration 7.1 Measuring 7.1.1 Measuring the ion concentration NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. Incorrect calibration of ion sensitive electrodes will result in incorrect measured values. Calibrate regularly before measuring. For precise ISE measurements the temperature difference between measurement and calibration should not be greater that 2 K. Therefore, adjust the temperature of the standard and measuring solutions accordingly. If the temperature difference is greater the [TempErr] warning appears in the measured value display. 1. Connect the ISE combination electrode to the meter. The pH/U/ISE measuring window is displayed. 2. If necessary, select the ISE display (unit, mg/l) with . 3. When measuring without temperature sensor: – Temper the test sample, or measure the current temperature. – Enter the temperature value in the menu. 4. Calibrate or check the meter with the electrode. While no valid calibration is available, e.g. in the delivery condition, "Error" appears in the measured value display. 5. Immerse the electrode in the test sample. ISE 0.157 mg/l 25.0 °C Ag 15.02.2014 12:12 ba77053d01 02/2014 USB output 39 Ion concentration Stability control (AutoRead) & HOLD function Multi 3320 The stability control function (AutoRead) continually checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. The measured parameter flashes on the display as soon as the measured value is outside the stability range when the automatic Stability control is switched off. You can activate or switch off the automatic Stability control function (see section 10.2.1 SYSTEM, page 74). 1. Freeze the measured value with . The [HOLD] status indicator is displayed. The HOLD function is active. You can terminate the Stability control function and the HOLD function with or at any time. 2. Using , activate the Stability control function manually. The [AR] status indicator appears while the measured value is assessed as not stable. A progress bar is displayed and the display of the measured parameter flashes. The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display of the measured parameter stops flashing. The current measurement data is output to the interface. Measurement data meeting the stability control criterion is marked by AR. You can prematurely terminate the Stability control function manually with at any time. If the Stability control function is prematurely terminated, the current measurement data are output to the interface without the AutoRead info. 3. Criteria Using , start a further measurement with stability control. or Release the frozen measured value again with or . The [AR] status display disappears. The display switches back to the previous indication. The AutoRead criteria affect the reproducibility of the measured values. The following criteria can be adjusted: high: highest reproducibility medium: medium reproducibility low: lowest reproducibility 40 ba77053d01 02/2014 Multi 3320 Ion concentration Increasing reproducibility also causes the response time to increase until a measured value is evaluated as stable. 7.1.2 Measuring the temperature For reproducible ion-selective measurements, it is essential to measure the temperature of the test sample. You have the following options to measure the temperature: Measurement by an external temperature sensor. Manual determination and input of the temperature. The measuring instrument recognizes whether a suitable sensor is connected and automatically switches on the temperature measurement. The display of the temperature indicates the active temperature measuring mode: Temperature sensor Resolution of the temp. display Temp. measurement yes 0.1 °C Automatic with temperature sensor - 1 °C Manual If you wish to measure (or calibrate) without temperature sensor, proceed as follows: 1. Measure the current temperature of the test sample. 2. When measuring without temperature sensor: – Temper the test sample, or measure the current temperature. – Enter the temperature value in the menu. ba77053d01 02/2014 41 Ion concentration Multi 3320 7.2 7.2.1 Calibration Why calibrate? Ion-selective electrodes age and are temperature-dependent. This changes the slope. As a result, an inexact measured value is displayed. Calibration determines the calibration line of the electrode and stores this value in the meter. Thus, you should calibrate before each measurement and at regular intervals. 7.2.2 When to calibrate? Before any measurement if possible After connecting another ISE electrode When the sensor symbol flashes, e.g. after a voltage interruption (empty batteries) 7.2.3 Calibration (ISE Cal) ISE Cal is the conventional two-point to seven-point calibration procedure that uses 2 to 7 freely selectable standard solutions. The concentration expected in the measurement determines the concentration of the calibration standards. 1. Connect the ISE combination electrode to the meter. The pH/U/ISE measuring window is displayed. 2. Keep the standard solutions ready. 3. When measuring without temperature sensor: – Temper the test sample, or measure the current temperature. – Enter the temperature value in the menu. 4. In the measured value display, select the ISE measuring window with <> <> and . 5. If necessary, change the unit of the measurement result and calibration standards in the ISE setup/Unit menu. 6. Start the calibration with . The calibration display appears. ISE Standard 0.0 1 mV 24.8 °C Ag 0.010 mg/l 15.02.2014 12:12 42 ba77053d01 02/2014 Multi 3320 Ion concentration 7. Thoroughly rinse the electrode with distilled water. 8. Immerse the electrode in standard solution 1. 9. When calibrating without temperature sensor: Measure the temperature of the standard solution using a thermometer. Use /[ ⇅ ] to select the setting of the temperature. Use <> <> to set the temperature. Use /[ ⇅ ] to select the setting of the concentration. 10. Set the concentration of the standard solution with <> <> and press . The standard solution is measured. The measured value is checked for stability (AutoRead). ISE 0.01 mg/l 0.0 mV 24.8 °C AR 15.02.2014 12:12 11. Wait for the end of the AutoRead measurement or accept the calibration value with . The calibration display for the next standard solution appears. ISE Standard 0.0 2 mV 24.8 °C Ag 0.020 mg/l 15.02.2014 12:12 Continuing with twopoint calibration ba77053d01 02/2014 12. Thoroughly rinse the electrode with distilled water. 13. Immerse the electrode in standard solution 2. 43 Ion concentration Multi 3320 14. When calibrating without temperature sensor: Measure the temperature of the standard solution using a thermometer. Use /[ ⇅ ] to select the setting of the temperature. Use <> <> to set the temperature. Use /[ ⇅ ] to select the setting of the concentration. 15. Set the concentration of the standard solution with <> <> and press . The standard solution is measured. The measured value is checked for stability (AutoRead). ISE 0.02 mg/l 8.9 mV 24.8 °C AR 15.02.2014 12:12 16. Wait for the end of the AutoRead measurement or accept the calibration value with . The calibration display for the next standard solution appears. ISE Standard 20.5 3 mV 24.8 °C Ag 0.050 mg/l 15.02.2014 12:12 17. Continuing with three- to seven-point calibration Press to continue with three-point calibration. or Finish the calibration procedure as a two-point calibration with . The new calibration values are displayed. Repeat the steps 12 to 17 in the same way with the third and further standard solutions as necessary. The new calibration values are displayed after the last calibration step was completed. Based on the calibration data, the calibration curve is determined in sections, according to the Nernst equation modified by Nikolski. 44 ba77053d01 02/2014 Multi 3320 Ion concentration 7.2.4 Calibration standards Use two to seven different standard solutions. The standard solutions have to be selected in either increasing or decreasing order. Select the unit of the standard solution and measurement result in the ISE setup/Unit menu. Standard solution (Std 1 - 7) Values Unit [mg/l] 0.010 ... 500.000 Unit [mol/l] 0.100 ... 5.000 µmol/l 10.00 ... 5.000 mmol/l Unit [mg/kg] 0.010 ... 500.000 Unit [ppm] 0.010 ... 500.000 Unit [%] 0.001 ... 50.000 The measurement precision is also dependent on the selected standard solutions. Therefore, the selected standard solutions should cover the value range expected of the following concentration measurement. If the measured electrode potential is outside the calibrated range, the [ISEErr] warning is displayed. 7.2.5 Displaying the calibration data Calibration data The calibration record of the last calibration is to be found under the menu item, / Calibration / Calibration record. To open it, press the key in the measured value display. Subsequently, you can transmit the displayed calibration data to the interface, e.g. to a PC, with the [USB output] key. Displaying the calibration data storage ba77053d01 02/2014 The calibration records of the last calibrations (up to 10) are given in the menu, /Calibration / Calibration data storage. 45 Ion concentration Multi 3320 Menu item Setting/function Description Calibration / Calibration data storage / Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. Output the displayed calibration record to the interface with /[USB output]. Quit the display with / [Back] or . Switch directly to the measured value display with . Calibration / Calibration data storage / Output to USB Calibration evaluation - Outputs the calibration records to the interface. After calibrating, the meter automatically evaluates the calibration. Display Error Calibration record Magnitude of the slope [mV] +++ 50.0 ... 70.0 or 25.0 ... 35.0 Error < 50 or > 70 or < 25 or > 35 Error elimination (see section 13 WHAT TO DO IF..., page 89) Calibration record (example) Multi 3320 Ser. no. 12345678 CALIBRATIONISE 15.02.2014 08:09:10 Standard 1 0.010 mg/l Standard 2 0.020 mg/l Voltage 1 38.5 mV Voltage 2 58.0 mV Temperature 1 24.0 øC Temperature 2 24.0 øC Ion type Ag Slope 64.7 mV Sensor +++ _____________________________________ 46 ba77053d01 02/2014 Multi 3320 Dissolved oxygen 8 Dissolved oxygen 8.1 Measuring 8.1.1 Measuring D.O. NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. 1. Connect the D.O. sensor to the meter. The D.O. measuring screen is displayed. D.O. measurements can be carried out with the CellOx 325 or DurOx 325 D.O. sensor. The measuring instrument automatically recognizes the type of the connected D.O. sensor. 2. If necessary, select the measured parameter with . 3. Immerse the D.O. sensor in the test sample. O2 7.92 mg/l 25.1 °C [CellOx] 01.07.2011 08:00 4. USB output If necessary, select the measured parameter with . D.O. concentration [mg/l] D.O. saturation [%] D.O. partial pressure [mbar]. Salinity correction When measuring the concentration of solutions with a salt content of more than 1 g/l, a salinity correction is required. For this, you have to measure and input the salinity of the measured medium first. When the salinity correction is switched on, the [SAL] indicator is displayed in the measuring window. You can switch the salinity correction on or off and enter the salinity in the menu for calibration and measurement settings (see section 10.1.6 SETTINGS FOR D.O. SENSORS, page 68). ba77053d01 02/2014 47 Dissolved oxygen Stability control (AutoRead) & HOLD function Multi 3320 The stability control function (AutoRead) continually checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. The measured parameter flashes on the display as soon as the measured value is outside the stability range when the automatic Stability control is switched off. You can activate or switch off the automatic Stability control function (see section 10.1.6 SETTINGS FOR D.O. SENSORS, page 68). 1. Freeze the measured value with . The [HOLD] status indicator is displayed. The HOLD function is active. You can terminate the Stability control function and the HOLD function with or at any time. 2. Using , activate the Stability control function manually. The [AR] status indicator appears while the measured value is assessed as not stable. A progress bar is displayed and the display of the measured parameter flashes. The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display of the measured parameter stops flashing. The current measurement data is output to the interface. Measurement data meeting the stability control criterion is marked by AR. You can prematurely terminate the Stability control function manually with at any time. If the Stability control function is prematurely terminated, the current measurement data are output to the interface without the AutoRead info. 3. Criteria for a stable measured value 48 Using , start a further measurement with stability control. or Release the frozen measured value again with or . The [AR] status display disappears. The display switches back to the previous indication. The Stability control function checks whether the measured values are stable ba77053d01 02/2014 Multi 3320 Dissolved oxygen within the monitored time interval. Measured variable Time interval Stability in the time interval D.O. concentration 20 seconds Δ : better then 0.05 mg/l Oxygen saturation 20 seconds Δ : better than 0.6 % D.O. partial pressure 20 seconds Δ : better than 1.2 mbar Temperature 15 seconds Δ : better than 0.5 °C The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer. 8.1.2 Measuring the temperature For reproducible D.O. measurements, it is essential to measure the temperature of the test sample. The temperature is automatically measured by the temperature sensor (NTC30 or Pt1000) integrated in the sensor. The CellOx 325 and DurOx 325 D.O. sensors have an integrated temperature sensor. ba77053d01 02/2014 49 Dissolved oxygen Multi 3320 8.2 8.2.1 Calibration Why calibrate? D.O. sensors age. This changes the slope of the D.O. sensor. Calibration determines the current slope of the sensor and stores this value in the instrument. 8.2.2 When to calibrate? After connecting a sensor Routinely within the framework of the company quality assurance When the calibration interval has expired 8.2.3 Calibration procedures The Multi 3320 provides 2 calibration procedures: Calibration in water vapor-saturated air. Use an OxiCal® air calibration vessel for calibration. Calibration via a comparison measurement (e.g. Winkler titration according to DIN EN 25813 or ISO 5813). At the same time, the relative slope is adapted to the comparison measurement by a correction factor. When the correction factor is active, the [Factor] indicator appears in the measuring window. 8.2.4 Calibration in water vapor-saturated air (air calibration vessel) For this calibration procedure, the Comparison meas. setting must be set to Off in the Calibration menu. Proceed as follows to calibrate the instrument: 1. Connect the D.O. sensor to the meter. 2. Put the D.O. sensor into the air calibration vessel. The sponge in the air calibration vessel must be moist (not wet). Leave the sensor in the air calibration vessel for a time long enough to adjust. 3. 50 Start the calibration with . The last calibration data (relative slope) is displayed. ba77053d01 02/2014 Multi 3320 Dissolved oxygen O2 0.88 25.1 °C OxiCal 01.07.2011 08:00 4. Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. 5. Wait for the end of the measurement with stability control or accept the calibration value with . The calibration record is displayed and output to the interface. 6. Using /[Continue] or , switch to the measured value display. The meter displays a D.O. saturation of approx. 101.7 % in the air calibration vessel. 8.2.5 Calibrating with a Comparison meas. (OxiComp) For this calibration procedure, the Comparison meas. setting must be set to On in the Calibration menu. Before calibrating via a comparison measurement, the sensor should be calibrated in the air calibration vessel. 1. Connect the D.O. sensor to the meter. 2. Immerse the D.O. sensor in the reference solution. 3. Start the calibration with . O2 7.92 mg/l 25.1 °C OxiComp 01.07.2011 08:00 ba77053d01 02/2014 51 Dissolved oxygen Multi 3320 4. Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. 5. Wait for the end of the measurement with stability control or accept the calibration value with . The factor that was set last is displayed. O2 7.92 mg/l 0.973 OxiComp 01.07.2011 08:00 6. 52 Using <> <>, set the correction factor to adjust the displayed concentration value to the nominal value (value of the comparison measurement). Subsequently, accept the correction factor with . The meter switches to the measured value display. The status display [Factor] is active. ba77053d01 02/2014 Multi 3320 Dissolved oxygen 8.2.6 Calibration data The calibration record is automatically transmitted to the interface after calibrating. Displaying the calibration data The calibration record of the last calibration is to be found under the menu item, / Calibration / Calibration record. To open it, press the key in the measured value display. Subsequently, you can transmit the displayed calibration data to the interface, e.g. to a PC, with the [USB output] key. Displaying the calibration data storage The calibration records of the last calibrations (up to 10) are available in the menu, / Calibration / Calibration data storage and in the menu, / Storage & config/Data storage / Calibration data storage. Menu item Setting/function Description Calibration / Calibration data storage /Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. or Output the displayed calibration record to the interface with /[USB output]. Data storage / Calibration data storage /Display Quit the display with / [Back] or . Switch directly to the measured value display with . Calibration / - Outputs the calibration records to the interface. Calibration data storage / Output to USB or Data storage / Calibration data storage / Output to USB Calibration evaluation ba77053d01 02/2014 After calibration, the meter automatically evaluates the current status of the calibration. The evaluation appears on the display and in the calibration record. 53 Dissolved oxygen Multi 3320 Display Error Calibration record Relative slope +++ S = 0.8 ... 1.25 ++ S = 0.7 ... 0.8 + S = 0.6 ... 0.7 Error S < 0.6 or S > 1.25 Error elimination (see section 11 WHAT TO DO IF..., page 48) Calibration record (example) Multi 3320 Ser. no. 11292113 CALIBRATION CellOx 01.07.2011 16:13:33 S = 0.88 25.0 °C Sensor +++ Calibration datasets The Multi 3320 administrates two sets of calibration data: Set 1 for the type, "CellOx": – CellOx 325 Set 2 for the type, "DurOx": – DurOx 325 Sensors of different types can be calibrated separately from each other. When one sensor type is calibrated, the calibration data of the other type remains stored. The Multi 3320 recognizes the type of the connected sensor and automatically uses the correct calibration data. 54 ba77053d01 02/2014 Multi 3320 Conductivity 9 Conductivity 9.1 Measuring 9.1.1 Measuring the conductivity NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. 1. Connect the conductivity measuring cell to the measuring instrument. The conductivity measuring screen is displayed. 2. If necessary, select the measured parameter with . 3. Check the Measuring cell settings and cell constant for the connected conductivity measuring cell. If necessary, correct the settings. The selection of the measuring cell and the setting of the cell constant is done in the measurement settings menu for conductivity (see section 10.1.8 SETTINGS FOR CONDUCTIVITY MEASURING CELLS, page 70). The cell constant to be set must either be taken from the operating manual of the measuring cell or is printed on the measuring cell. 4. Immerse the conductivity measuring cell in the test sample. ϰ 1417 µS/cm 25.0 °C [Tr25][nLF][ 0.479 1/cm] 01.07.2011 08:00 5. USB output If necessary, select the measured parameter with . Conductivity [µS/cm] / [mS/cm] Resistivity [Ω·cm] / [kΩ·cm] / [MΩ·cm] Salinity SaL [ ] Total dissolved solids TDS [mg/l] / [g/l] ba77053d01 02/2014 55 Conductivity Multi 3320 The factor to calculate the total dissolved solids is set to 1.00 in the factory. You can adjust this factor to meet your requirements in the range 0.40 ... 1.00. The factor is set in the Measurement menu for the parameter, TDS. Stability control (AutoRead) & HOLD function The stability control function (AutoRead) continually checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. The display of the measured parameter flashes. as soon as the measured value is outside the stability range. when the automatic Stability control is switched off. You can activate or switch off the automatic Stability control function (see section 10.1.8 SETTINGS FOR CONDUCTIVITY MEASURING CELLS, page 70). 1. Freeze the measured value with . The [HOLD] status indicator is displayed. The HOLD function is active. You can terminate the Stability control function and the HOLD function with or at any time. 2. Using , activate the Stability control function manually. The [AR] status indicator appears while the measured value is assessed as not stable. A progress bar is displayed and the display of the measured parameter flashes. The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display of the measured parameter stops flashing. The current measurement data is output to the interface. Measurement data meeting the stability control criterion is marked by AR. You can prematurely terminate the Stability control function manually with at any time. If the Stability control function is prematurely terminated, the current measurement data are output to the interface without the AutoRead info. 3. Criteria for a stable measured value 56 Using , start a further measurement with stability control. or Release the frozen measured value again with or . The [AR] status display disappears. The display switches back to the previous indication. The Stability control function checks whether the measured values are stable ba77053d01 02/2014 Multi 3320 Conductivity within the monitored time interval. Measured variable Time interval Stability in the time interval Conductivity ϰ 10 seconds Δ : better than 1.0 % of mesured value Temperature 15 seconds Δ : better than 0.5 °C The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer. 9.1.2 Measuring the temperature For reproducible conductivity measurements, it is essential to measure the temperature of the test sample. The temperature is automatically measured by the temperature sensor (NTC30 or Pt1000) integrated in the sensor. The TetraCon 325, KLE 325, LR 325/01 and LR 325/001 conductivity sensors have an integrated temperature sensor. 9.2 9.2.1 Calibration Why calibrate? Aging slightly changes the cell constant, e.g. due to coatings. As a result, an inexact measured value is displayed. The original characteristics of the cell can often be restored by cleaning the cell. Calibration determines the current value of the cell constant and stores this value in the meter. Thus, you should calibrate at regular intervals (we recommend: every 6 months). 9.2.2 When to calibrate? After connecting a sensor Routinely within the framework of the company quality assurance When the cleaning interval has expired 9.2.3 Determining the cell constant (calibration in control standard) You can determine the actual cell constant of the conductivity measuring cell by calibrating with the control standard in the following ranges: 0.450 ... 0.500 cm-1 (e.g. TetraCon 325 with a nominal cell constant of 0.475-1) 0.800 ... 0.880 cm-1 ba77053d01 02/2014 57 Conductivity Multi 3320 (e.g. KLE 325 with a nominal cell constant of 0.840-1) The cell constant is determined in the control standard, 0.01 mol/l KCl. Cell constants outside the ranges quoted above cannot be calibrated. In the delivery condition, the calibrated cell constant of the meter is set to 0.475 cm-1 (conductivity measuring cell, TetraCon 325). For this calibration procedure, the Measuring cell setting must be set to cal in the Measurement menu. Proceed as follows to determine the cell constant: 1. Connect the conductivity measuring cell to the measuring instrument. 2. In the measured value display, select the conductivity parameter with . 3. Start the calibration with . The cell constant that was calibrated last is displayed. ϰ 0.479 1 25.1 /cm °C [Tr25][nLF][ 0.479 1/cm] 01.07.2011 08:00 4. Immerse the conductivity measuring cell in the control standard solution, 0.01 mol/l KCI. 5. Start the measurement with . The [AR] status indicator is displayed. A progress bar is displayed and the display of the measured parameter flashes. 6. Wait for the end of the measurement with stability control or accept the calibration value with . The calibration record is displayed and output to the interface. 7. Using /[Continue] or , switch to the measured value display. 9.2.4 Calibration data The calibration record is automatically transmitted to the interface after calibrating. Displaying the calibration data 58 The calibration record of the last calibration is to be found under the menu item, / Calibration / Calibration record. To open it, press the key in the measured value display. ba77053d01 02/2014 Multi 3320 Conductivity Subsequently, you can transmit the displayed calibration data to the interface, e.g. to a PC, with the [USB output] key. Displaying the calibration data storage The calibration records of the last calibrations (up to 10) are available in the menu, / Calibration / Calibration data storage and in the menu, / Storage & config/Data storage / Calibration data storage. Menu item Setting/function Description Calibration / Calibration data storage /Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. or Output the displayed calibration record to the interface with /[USB output]. Data storage / Calibration data storage /Display Quit the display with / [Back] or . Switch directly to the measured value display with . Calibration / - Outputs the calibration records to the interface. Calibration data storage / Output to USB or Data storage / Calibration data storage / Output to USB Calibration evaluation After calibration, the meter automatically evaluates the current status of the calibration. The evaluation appears on the display and in the calibration record. Display Error Calibration record Cell constant [cm-1] +++ within the ranges 0.450 ... 0.500 cm-1 or 0.800 ... 0.880 cm-1 Error outside the ranges 0.450 ... 0.500 cm-1 or 0.800 ... 0.880 cm-1 Error elimination (see section 11 WHAT TO DO IF..., page 48) ba77053d01 02/2014 59 Conductivity Calibration record (example) Multi 3320 Multi 3320 Ser. no. 11292113 CALIBRATION Cond 01.07.2011 16:13:33 Cell constant 0.479 1/cm Sensor +++ 60 25.0 °C ba77053d01 02/2014 Multi 3320 Settings 10 Settings 10.1 Measurement settings 10.1.1 Settings for pH measurements The settings for pH measurements are made in the menu for calibration and measurement settings of the pH/ORP measurement. To open the settings, display the required measured parameter in the measured value display and press the key. After completing the settings, switch to the measured value display with . In the following table, only those settings are listed that concern the pH measurement. Default settings are printed in bold. Menu item Possible setting Description Calibration / Calibration record - Displays the calibration record of the last calibration. Calibration / Calibration data storage /Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. Output the displayed calibration record to the interface with /[USB output]. Output all calibration records to the interface with [USB output]. Quit the display with / [Back] or . Switch directly to the measured value display with . ba77053d01 02/2014 Calibration / Calibration data storage / Output to USB - Outputs the calibration records to the interface. Calibration /Buffer TEC NIST/DIN ConCal ... Buffer sets to be used for pH calibration (see section 5.2 CALIBRATION, page 25). Calibration /One point calibration Yes No Quick calibration with 1 buffer Calibration /Calibration interval 1 ... 7 ... 999 d Calibration interval for the pH electrode (in days). The meter reminds you to calibrate regularly by the flashing sensor symbol in the measuring screen. 61 Settings Multi 3320 Menu item Possible setting Description Calibration /Unit for slope mV/pH % Unit of the slope. The % display refers to the Nernst slope of -59.2 mV/pH (100 x determined slope/Nernst slope). Alternative temperature On Off Takes the temperature value from the 2nd sensor. Man. temperature -25 ... +25 ... +130 °C Entry of the manually determined temperature. For measurements without temperature sensor only. Resolution pH 0.001 0.01 0.1 Resolution of the pH display Reset - Resets all sensor settings to the delivery condition (see section 10.3.1 RESETTING THE MEASUREMENT SETTINGS, page 75). 10.1.2 Buffer sets for calibration You can use the buffer sets quoted in the table for an automatic calibration. The pH values are valid for the specified temperature values. The temperature dependence of the pH values is taken into consideration during the calibration. 62 No. Buffer set * pH values at 1 ConCal Any Any 2 NIST/DIN DIN buffers according to DIN 19266 and NIST Traceable Buffers 1.679 4.006 6.865 9.180 12.454 25 °C 3 TEC WTW Technical buffers 2.000 4.010 7.000 10.011 25 °C 4 Merck 1* 4.000 7.000 9.000 20°C 5 Merck 2 * 1.000 6.000 8.000 13.000 20°C ba77053d01 02/2014 Multi 3320 ba77053d01 Settings 02/2014 No. Buffer set * pH values at 6 Merck 3 * 4.660 6.880 9.220 20°C 7 Merck 4 * 2.000 4.000 7.000 10.000 20°C 8 Merck 5 * 4.010 7.000 10.000 25 °C 9 DIN 19267 1.090 4.650 6.790 9.230 25 °C 10 Mettler Toledo USA * 1.679 4.003 7.002 10.013 25 °C 11 Mettler Toledo EU * 1.995 4.005 7.002 9.208 25 °C 12 Fisher * 2.007 4.002 7.004 10.002 25 °C 13 Fluka BS * 4.006 6.984 8.957 25 °C 14 Radiometer * 1.678 4.005 7.000 9.180 25 °C 15 Baker * 4.006 6.991 10.008 25 °C 16 Metrohm * 3.996 7.003 8.999 25 °C 17 Beckman * 4.005 7.005 10.013 25 °C 18 Hamilton Duracal * 4.005 7.002 10.013 25 °C 63 Settings Multi 3320 No. Buffer set * pH values at 19 Precisa * 3.996 7.003 8.999 25 °C 20 Reagecon TEC * 2.000 4.010 7.000 10.000 25 °C 21 Reagecon 20 * 2.000 4.000 7.000 10.000 13.000 20°C 22 Reagecon 25 * 2.000 4.000 7.000 10.000 13.000 25 °C 23 Chemsolute * 2.000 4.000 7.000 10.000 20°C 24 USABlueBook * 4.000 7.000 10.000 25 °C 25 YSI * 4.000 7.000 10.000 25 °C Brand names or trade names are trademarks of their respective owners protected by law. The buffers are selected in the menu, pH / / Calibration / Buffer (see 10.1.1 SETTINGS FOR PH MEASUREMENTS, PAGE 61). 10.1.3 Calibration interval The calibration evaluation is displayed as a sensor symbol. The sensor symbol flashes after the adjusted calibration interval has expired. It is still possible to measure. To ensure the high measuring accuracy of the measuring system, calibrate after the calibration interval has expired. 64 ba77053d01 02/2014 Multi 3320 Settings Setting the calibration interval The calibration interval is set to 7 days in the factory. You can change the interval (1 ... 999 days): 1. Using , open the menu for the measurement settings. 2. In the Calibration / Calibration interval menu, set the calibration interval with <><>. 3. Confirm the setting with . 4. Quit the menu with . 10.1.4 Settings for ORP measurements The settings for ORP measurements are made in the menu for calibration and measurement settings of the pH/ORP measurement. To open the settings, display the required measured parameter in the measured value display and press the key. After completing the settings, switch to the measured value display with . In the following table, only those settings are listed that influence the ORP measurement. Default settings are printed in bold. ba77053d01 02/2014 Menu item Possible setting Description Man. temperature -25 ... +25 ... +130 °C Entry of the manually determined temperature. For measurements without temperature sensor only. Resolution mV 0.1 1 Resolution of the mV display Reset - Resets all sensor settings to the delivery condition (see section 10.3.1 RESETTING THE MEASUREMENT SETTINGS, page 75). 65 Settings Multi 3320 10.1.5 Settings for ISE measurements The settings for ISE measurements are made in the menu for calibration and measurement settings of the ISE measurement. To open the settings, display the required measured parameter in the measured value display and press the key. After completing the settings, switch to the measured value display with . In the following table, only those settings are listed that influence the ISE measurement: Menu item Possible setting Description Calibration / Calibration record - Displays the calibration record of the last calibration. Calibration / Calibration data storage / Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. Output the displayed calibration record to the interface with / [USB output]. Output all calibration records to the interface with [USB output]. Quit the display with /[Back] or . Switch directly to the measured value display with . 66 Calibration / Calibration data storage / Output to USB - Outputs the calibration records to the interface. Man. temperature -25 ... +25 ... +130 °C Entry of the manually determined temperature. For measurements without temperature sensor only. ISE setup / AutoRead criterion low medium high Selection of the AutoRead criteria (see section 7.1.1 MEASURING THE ION CONCENTRATION, page 39). ba77053d01 02/2014 Multi 3320 Settings Menu item Possible setting Description ISE setup / Ion type Ag, Br, Ca, Cd, Cl, CN, Cu, F, I, K, Na, NO3, Pb, S, NH3, NH4, CO2, ION Selection of the ion type to be measured. An ion that is not included in the list can be measured with the setting, ION. * Measuring with the NH 500 electrode: The NH4 setting is not suitable for the gas-sensitive electrode NH 500. Select the following settings: Ion type "ION", Valency "-1". ba77053d01 02/2014 ISE setup / Unit mg/l µmol/l mg/kg ppm % Selection, with which unit the measurement result and calibration standards should be displayed. ISE setup / Ion type/ION Valency Molar mass Set the valence (Valency) and molar weight (Molar mass) for the ion. ISE setup / Density 0.001 ... 9.999 g/ml or kg/l Adjustable density of the test sample (only with Unit: mg/kg, ppm, %) 67 Settings Multi 3320 10.1.6 Settings for D.O. sensors The settings are available in the menu for measurement and calibration settings. To open the settings, display the required measured parameter in the measured value display and press the key. After completing the settings, switch to the measured value display with . Default settings are printed in bold. Menu item Possible setting Description Calibration /Calibration record - Displays the calibration record of the last calibration. Calibration / Calibration data storage /Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. Output the displayed calibration record to the interface with / [USB output]. Output all calibration records to the interface with [USB output]. Quit the display with / [Back] or . Switch directly to the measured value display with . 68 Calibration / Calibration data storage / Output to USB - Outputs the calibration records to the interface. Calibration /Calibration interval 1 ... 14 ... 999 d Calibration interval for the D.O. sensor (in days). The meter reminds you to calibrate regularly by the flashing sensor symbol in the measuring screen. Calibration /Comparison meas. On Off Enables to adjust the measured value with the aid of a comparison measurement, e.g. Winkler titration. For details, see section 8.2 CALIBRATION, page 50. ba77053d01 02/2014 Multi 3320 Settings Menu item Possible setting Description Sal correction On Off Manual salt content correction for concentration measurements. Salinity 0.0 ... 70.0 Salinity or salinity equivalent for the salt content correction. This function is only available for concentration measurements if the manual salt content correction is switched on. Reset - Resets all sensor settings to the delivery condition (see section 10.3.1 RESETTING THE MEASUREMENT SETTINGS, page 75). 10.1.7 Calibration interval The calibration evaluation is displayed as a sensor symbol. The sensor symbol flashes after the adjusted calibration interval has expired. It is still possible to measure. To ensure the high measuring accuracy of the measuring system, calibrate after the calibration interval has expired. Setting the calibration interval ba77053d01 02/2014 The calibration interval is set to 14 days in the factory. You can change the interval (1 ... 999 days): 1. Open the menu for measurement settings with . 2. In the Calibration / Calibration interval menu, set the calibration interval with <><>. 3. Confirm the setting with . 4. Quit the menu with . 69 Settings Multi 3320 10.1.8 Settings for conductivity measuring cells The settings are made in the Measurement menu for the measured parameter, conductivity. To open the settings, display the required measured parameter in the measured value display and press the key. After completing the settings, switch to the measured value display with . Default settings are printed in bold. Menu item Possible setting Description Calibration /Calibration record - Displays the calibration record of the last calibration. Calibration / Calibration data storage /Display - Displays the calibration record. Further options: Scroll through the calibration records with <><>. Output the displayed calibration record to the interface with / [USB output]. Output all calibration records to the interface with [USB output]. Quit the display with /[Back] or . Switch directly to the measured value display with . 70 Calibration / Calibration data storage / Output to USB - Outputs the calibration records to the interface. Calibration /Calibration interval 1 ... 150 ... 999 d Calibration interval for the measuring cell (in days). The meter reminds you to calibrate regularly by the flashing sensor symbol in the measuring screen. ba77053d01 02/2014 Multi 3320 Settings Menu item Measurement / Measuring cell / Type Possible setting Description Measuring cell used Cal Measuring cells whose cell constant is determined by calibration in the KCL control standard solution. Calibration ranges: 0.450 ... 0.500 cm-1 and 0.800 ... 0.880 cm-1 The currently valid cell constant is displayed in the status line. LR325/01 LR 325/01 measuring cell, nominal cell constant 0.100 cm-1. The cell constant can be adjusted in the range 0.090 ... 0.110 cm-1. LR325/001 LR 325/001 measuring cell, nominal cell constant 0.010 cm-1. The cell constant is permanently set. man Any measuring cells with freely adjustable cell constants in the range 0.250 ... 25.000 cm-1. Measurement / Measuring cell / Cell const. man 0.250 ... 0.475 25.000 cm-1 Display and setting option of the cell constant of any measuring cells (man). Measurement / Measuring cell / Cell const. LR325/ 01 0.090 ... 0.100 ... 0.110 cm-1 Display and setting option of the cell constant of the LR 325/01 measuring cell. Measurement / Temp. comp. (TC) /Method nLF Lin Off Procedure for temperature compensation (see section 10.1.10 TEMPERATURE COMPENSATION, page 72). This setting is only available for the measured parameters, ϰ and ρ. Measurement / Temp. comp. (TC) / Linear coeff. 0.000 ... 2.000 ... 10.000 %/K Coefficient of the linear temperature compensation. This setting is only available when the linear temperature compensation is set. ba77053d01 02/2014 71 Settings Multi 3320 Menu item Possible setting Description Measurement / Temp. comp. (TC) / Reference temp. 20 °C 25 °C Reference temperature Measurement / TDS factor 0.40 ... 1.00 Factor for TDS value Reset - Resets all sensor settings to the delivery condition (see section 10.3.1 RESETTING THE MEASUREMENT SETTINGS, page 75). This setting is only available for the measured parameters, ϰ and ρ. 10.1.9 Calibration interval The calibration evaluation is displayed as a sensor symbol. The sensor symbol flashes after the adjusted calibration interval has expired. It is still possible to measure. To ensure the high measuring accuracy of the measuring system, calibrate after the calibration interval has expired. Setting the calibration interval The calibration interval is set to 150 days in the factory. You can change the interval (1 ... 999 days): 1. Open the menu for measurement settings with . 2. In the Calibration / Calibration interval menu, set the calibration interval with <><>. 3. Confirm the setting with . 4. Quit the menu with . 10.1.10 Temperature compensation The calculation of the temperature compensation is based on the preset reference temperature, 20 °C or 25 °C. It appears on the display as Tr20 or Tr25. You can select one of the following temperature compensation methods: Nonlinear temperature compensation (nLF) according to EN 27 888 Linear temperature compensation (lin) with adjustable coefficient in the range 0.000 ... 10.000 %/K No temperature compensation (off) 72 ba77053d01 02/2014 Multi 3320 Settings The reference temperature and temperature compensation are set in the Measurement menu for the parameter, conductivity (see section 10.1.8 SETTINGS FOR CONDUCTIVITY MEASURING CELLS, page 70). Application tips Set the temperature compensation suitable for your test sample: Test sample Temperature compensation Display Natural water (ground water, surface water, drinking water) nLF according to EN 27 888 nLF Ultrapure water nLF according to EN 27 888 nLF Other aqueous solutions Lin Set linear temperature coefficient 0.000 ... 10.000 %/K Lin Salinity (seawater) Automatic nLF according to IOT (International Oceanographic Tables) Sal, nLF 10.1.11 Setting the TDS factor The factor to calculate the total dissolved solids is set to 1.00 in the delivery condition. You can adjust this factor to meet your requirements in the range 0.40 ... 1.00. The factor is set in the menu for the parameter TDS (Measurement / TDS factor). ba77053d01 02/2014 73 Settings Multi 3320 10.2 Sensor-independent settings 10.2.1 System To open the Storage & config menu in the measured value display, press the key. After completing the settings, switch to the measured value display with . Default settings are printed in bold. Menu item Possible setting Description System / General / Language Deutsch English (further) Selects the menu language System / General / Beep On Off Switch on/off the beep on keystroke System / General / Illumination Auto On Off Switches the display illumination on/off System / General / Contrast 0 ... 50 ... 100 % Changes the display contrast System / General / Switchoff time 10 min ... 1h ... 24 h Adjusts the switch-off time System / General / Temperature unit °C °F Temperature unit, degrees Celsius or degrees Fahrenheit. All temperature values are displayed with the selected unit. System / General / Stability control On Off Switches on or off the automatic stability control during measurement System / Interface / Baud rate 1200, 2400, 4800, 9600, 19200 Baud rate of the data interface System / Interface / Output format ASCII CSV Output format for data transmission (see section 12 TRANSMITTING DATA (USB INTERFACE), page 84) System / Interface / Decimal separator Dot (xx.x) Comma (xx,x) Decimal separator System / Interface / Output header 74 Output of a header for Output format: CSV ba77053d01 02/2014 Multi 3320 Settings Menu item Possible setting Description System /Clock Date format Datum Time Time and date settings (see section 4.4.6 EXAMPLE 2 ON NAVIGATION: SETTING THE DATE AND TIME, page 19) System /Service information System /Reset Hardware version and software version of the meter are displayed. - Resets the system settings to the delivery condition (see section 10.3.2 RESETTING THE SYSTEM SETTINGS, page 77). 10.2.2 Data storage This menu contains all functions to display, edit and erase stored measured values and calibration records (see section 11 DATA STORAGE, page 78). 10.3 Reset You can reset (initialize) all sensor settings and sensor-independent settings separately from each other. 10.3.1 Resetting the measurement settings The calibration data are reset to the default settings together with the measuring parameters. Recalibrate after performing a reset. The following settings for pH measurements are reset to the default settings with the Reset function: pH ba77053d01 02/2014 Setting Default settings Buffer TEC Calibration interval 7d Unit for slope mV/pH Measured parameter pH Resolution pH 0.001 Resolution mV 0.1 Asymmetry 0 mV 75 Settings Multi 3320 Setting Default settings Slope -59.2 mV Man. temperature 25 °C One point calibration No The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open it in the measured value display, press the (or /[Menu]) key. Oxi The calibration data are reset to the default settings together with the measuring parameters. Recalibrate after performing a reset. The following settings for D.O. measurements are reset to the default settings with the Reset function: Setting Default settings Kal.-Intervall 14 d Comparison meas. Off Measured parameter D.O. concentration Relative slope (SRel) 1.00 Salinity (value) 0.0 Salinity (function) Off The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open it in the measured value display, press the (or /[Menu]) key. Cond 76 The following settings for conductivity measurements are reset to the default settings with the Reset function: Setting Default settings Kal.-Intervall 150 d Measured parameter ϰ Cell constant (C) (calibrated) 0.475 cm-1 or 0.840 cm-1 (nominal cell constant of the conductivity measuring cell last calibrated) Cell constant (C) (set) 0.475 cm-1 Temperature compensation nLF ba77053d01 02/2014 Multi 3320 Settings Setting Default settings Reference temperature 25 °C Temperature coefficient (TC) of the linear temperature compensation 2.000 %/K TDS factor 1.00 The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open it in the measured value display, press the (or /[Menu]) key. 10.3.2 Resetting the system settings The following system settings can be reset to the default condition: Setting Default settings Language English Beep On Baud rate 4800 Baud Output format ASCII Decimal separator Dot (xx.x) Contrast 50 % Illumination Auto Switchoff time 1h Stability control On Temperature unit °C The system settings are reset in the menu, Storage & config / System / Reset. To open the Storage & config menu in the measured value display, press the (or /[Menu]) key. ba77053d01 02/2014 77 Data storage Multi 3320 11 Data storage You can transmit measured values (datasets) to the data storage: Manual data storage (see section 11.1 MANUAL STORAGE, page 78) Automatic storage at intervals (see section 11.2 AUTOMATIC DATA STORAGE AT INTERVALS, page 79) With each data storage process, the current datasets of the sensors indicated on the display are transmitted to the interface at the same time. 11.1 Manual storage You can transmit a measurement dataset to the data storage as follows. Bei jedem Speichervorgang werden die aktuellen Datensätze der im Display angezeigten Sensoren gleichzeitig auf die Schnittstelle übertragen. 1. Press the key shortly. The menu for manual data storage appears. Manual data storage 4 von 500 15.02.2014 11:24:16 pH 7.000 24.8 °C AR +++ O2 7.80 mg/l 24.8 °C AR +++ ID number: Continue Back 2. 78 1 15.02.2014 14:15 USB output If necessary, change and confirm the ID number (1 ... 10000) with <><> and . The dataset is stored. The meter switches to the measured value display. ba77053d01 02/2014 Multi 3320 Data storage If the storage is full The following window appears if all 500 storage locations are occupied: Warning Data storage full. Erase? Yes No Back 15.02.2014 14:15 You have the following options: To erase the entire storage, confirm Yes. To cancel the storage process and switch to the measured value display, confirm No. Then you can e.g. transmit the stored data to a PC (see section 11.3.1 EDITING THE MEASURED VALUE STORAGE, page 81) and subsequently erase the data storage (see section 11.3.2 ERASING THE MEASUREMENT DATA STORAGE, page 83). 11.2 Automatic data storage at intervals The storage interval (Interval) determines the time interval between automatic data storage processes. With each data storage process, the current datasets of the sensors indicated on the display are transmitted to the interface at the same time. Configuring the automatic storage function 1. Press the key. The menu for automatic data storage appears. Automatic data storage 1 30 s 180 min ID number Interval Duration Continue 0d03h00min 0 1 2 1d17h33min Back 15.02.2014 14:15 3 1 Adjusted entire storage duration 2 Max. available storage duration 3 Graphical display of the storage usage ba77053d01 02/2014 79 Data storage Settings Multi 3320 You can configure the automatic data storage function with the following settings: Menu item Possible setting Description ID number 1 ... 10000 ID number for the dataset series. Interval 1 s, 5 s, 10 s, 30 s, 1 min, 5 min, 10 min, 15 min, 30 min, 60 min Storage interval. 1 min ... x min Storage duration. Specifies after which time the automatic data storage should be terminated. Duration The lower limit of the storage interval can be restricted by the number of free storage locations. The upper limit is restricted by the storage duration. The lower limit of the storage duration is restricted by the storage interval. The upper limit is restricted by the number of free storage locations. Starting the automatic storage function To start the automatic storage function, select Continue with <><> and confirm with . The meter switches to the measured value display. pH 0 6.949 14 1 25.0 °C 0d03h00min Eco mode 15.02.2014 14:15 2 1 Remaining storage duration 2 Graphical display of the storage duration The active automatic storage function can be recognized by the progress bar in the function display. The progress bar indicates the remaining storage duration. If the automatic storage function is activated, only the following keys are active: Softkeys, , and . The other keys and the automatic switch-off function are deactivated. Energy saving mode ([Eco mode]) 80 If the automatic storing function is active, the meter provides an energy saving mode ([Eco mode]) to avoid unnecessary energy consumption. The energy ba77053d01 02/2014 Multi 3320 Data storage saving mode switches off functions of the meter that are not required for the automatic storage of measurement data (such as the display). By pressing any key the energy saving mode is switched off again. Terminating the automatic storage function prematurely Proceed as follows to switch off the automatic data storage function before the adjusted storage duration has expired: 1. Press the key. The following window appears. Warning Stop automatic storage? Yes No Back 2. 11.3 15.02.2014 14:15 Using <><>, select Yes and confirm with . The meter switches to the measured value display. The automatic data storage function is terminated. Measurement data storage 11.3.1 Editing the measured value storage The contents of the manual or automatic measurement data storage can be shown on the display and output to the interface. Each of the measurement data storages has a function to erase the entire contents. Editing the data storage The storage is edited in the menu, Storage & config/ Data storage. To open the Storage & config menu in the measured value display, press the key. Open the manual or automatic storage directly with the or key. The settings are explained here using the manual data storage as an example. The same settings and functions are available for the automatic data storage. ba77053d01 02/2014 81 Data storage Settings Multi 3320 Menu item Setting/ function Description Data storage / Manual data storage / Display - Displays all measurement datasets page by page. Further options: Scroll through the datasets with <><>. Output the displayed dataset to the interface with /[USB output]. Quit the display with / [Back]. Display presentation of a dataset Data storage / Manual data storage / Erase - Erases the entire manual measurement data storage. All calibration data remain stored when this action is performed. Data storage / Manual data storage / Output to USB - Outputs all stored measurement data to the interface. Manual data storage 3 of 64 15.02.2014 11:24:16 ID number: 2 pH 7.000 24.8 °C AR +++ O2 7.80 mg/l 24.8 °C AR +++ Back Representation of a dataset (USB output) 15.02.2014 14:15 USB output 15.02.2014 09:56:20 Multi 3320 Ser. no. 08502113 ID number 2 pH1 6.012 24.8 °C, AR, S: +++ O2 7.80 24.8 °C, AR, S: +++ ________________________________________ 15.02.2014 10:56:20 Multi 3320 Ser. no. 08502113 ID number 2 pH1 6.012 24.8 °C, AR, S: +++ O2 7.80 24.8 °C, AR, S: +++ Quitting the display 82 To quit the display of stored measurement datasets, you have the following ba77053d01 02/2014 Multi 3320 Data storage options: Switch directly to the measured value display with . Quit the display and move to the next higher menu level with /[Back]. 11.3.2 Erasing the measurement data storage Erasing the measurement data storage (see section 11.3.1 EDITING THE page 81). MEASURED VALUE STORAGE, 11.3.3 Measurement dataset A complete dataset includes: ID number Date/time Measured values of the connected sensors Measured temperature value of the connected sensors or manually set temperature AutoRead info: The AR indicator appears with the measured value if the AutoRead criterion was met while storing (stable measured value). Otherwise, there is no AR indicator. Calibration evaluation: +++, ++, +, -, or no evaluation 11.3.4 Storage locations The Multi 3320 meter has two measurement data storages. The measured values recorded either manually or automatic are stored separately in individual measurement data storages. ba77053d01 02/2014 Storage Maximum number of datasets Manual data storage 500 Automatic data storage 5000 83 Transmitting data (USB interface) Multi 3320 12 Transmitting data (USB interface) 12.1 Options for data transmission Via the USB interface you can transmit data to a PC. The following table shows which data are transmitted to the interface in which way: Data Control Operation / description Current datasets of the sensors indicated on the display Manual With /[USB output]. Simultaneously with every manual data storage process (see section 11.1 MANUAL STORAGE, page 78). Automatic, at intervals With /[USB output]. Then you can set the transmission interval. Simultaneously with every automatic data storage process (see section 11.2 AUTOMATIC DATA STORAGE AT INTERVALS, page 79). Stored measured values Manual Displayed dataset with