WTW PH 3210 Operating Manual WTW_p H_3210 P H
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Operating manual pH 3210 pH Men u 6.09 3 15.1 1 08:3.2008 7 25.0 °C pH meter For Sales & Service Contact 2650 E. 40th Ave. • Denver, CO 80205 Phone 303-320-4764 • Fax 303-322-7242 1-800-833-7958 ba75793e05 09/2011 www.geotechenv.com pH 3210 Accuracy when going to press Copyright The use of advanced technology and the high quality standard of our instruments are the result of a continuous development. This may result in differences between this operating manual and your meter. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept any legal claims resulting from the data, figures or descriptions. © Weilheim 2008, WTW GmbH Reproduction in whole - or even in part - is prohibited without the express written permission of WTW GmbH, Weilheim. Printed in Germany. ba75793e05 09/2011 pH 3210 Contents pH 3210 - Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 1.3 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1 2.2 3 4.3 4.4 09/2011 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2.1 Inserting the batteries. . . . . . . . . . . . . . . . . . . . . 3.2.2 Switching on the meter. . . . . . . . . . . . . . . . . . . . 3.2.3 Setting the date and time . . . . . . . . . . . . . . . . . 13 13 13 14 14 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1 4.2 ba75793d05 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 10 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1 3.2 4 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . General operating principles . . . . . . . . . . . . . . . . . . . . . . 4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 4.2.2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2.3 Example 1 on navigation: Setting the language. 4.2.4 Example 2 on navigation: Setting the date and time ................................ Sensor-independent settings . . . . . . . . . . . . . . . . . . . . . 4.3.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3.2 Data storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3.3 Automatic Stability control . . . . . . . . . . . . . . . . . pH value / ORP voltage. . . . . . . . . . . . . . . . . . . . . . . . . . 4.4.1 General information . . . . . . . . . . . . . . . . . . . . . . 4.4.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . 4.4.3 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 4.4.4 Settings for pH and ORP measurements. . . . . . 4.4.5 pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4.6 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 4.4.7 Carrying out an automatic calibration (AutoCal) 4.4.8 Carrying out a manual calibration (ConCal) . . . . 4.4.9 Displaying calibration records . . . . . . . . . . . . . . 4.4.10 Continuous measurement control (CMC function) ............................ 15 16 16 17 19 22 24 24 25 26 27 27 28 30 32 34 38 39 42 45 46 3 Contents pH 3210 4.5 4.6 5 47 48 48 50 51 51 52 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 53 5.1 5.2 5.3 5.4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.1 Replacing the batteries . . . . . . . . . . . . . . . . . . . . Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 53 54 54 54 6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 7.1 7.2 8 4 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5.2 Editing the measured value storage . . . . . . . . . . 4.5.3 Erasing the measurement data storage . . . . . . . Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.6.1 Resetting the measurement settings . . . . . . . . . 4.6.2 Resetting the system settings . . . . . . . . . . . . . . . General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 60 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 ba75793d05 09/2011 pH 3210 Overview 1 Overview The compact pH 3210 precision pH meter enables you to perform pH measurements rapidly and reliably. The pH 3210 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications. The proven calibration procedures and automatic stability control function (AR) support your work with the pH meter. 3 pH Men u 6.09 3 15.1 1 08:3.2008 7 25.0 2 °C 1 ba75793e05 09/2011 1 Keypad 2 Display 3 Socket field 5 Overview pH 3210 1.1 Keypad F1 F2 M CAL AR RCL STO ENTER pH 3210 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. ). _ F2 Softkey providing situation dependent functions , e.g.: /[Menu]: Opens the menu for measurement settings /[Menu]: Opens the menu for system settings : Switches the meter on or off : Selects the measured parameter STO RCL _ : : Calls up the calibration procedure Displays the calibration data : Stores a measured value manually : Displays the manually stored measured values <▲>: Increments values, scrolls <▼>: Decrements values, scrolls _ CAL 6 : : : : _ _ F1 ba75793e05 09/2011 pH 3210 Overview ENTER AR : : 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 _ 1.2 Display 4 3 14 0 pH 6.093 2 25.0 °C 1 HOLD AR Menu Function display indicators ba75793e05 09/2011 22.09.2008 08:00 5 6 7 8 1 Status information 2 Measured value (with unit) 3 Measured parameter 4 Continuous measurement control (CMC function) 5 Sensor symbol (calibration evaluation, calibration interval) 6 Measured temperature (with unit) 7 Status line 8 Softkeys and date + time AutoCal e.g. TEC Calibration with automatic buffer recognition, e.g. with the buffer set: Technical buffers ConCal Calibration with any buffers Error An error occurred during calibration LoBat Batteries are almost empty AR Stability control (AutoRead) is active HOLD Measured value is frozen ( key) 7 Overview pH 3210 1.3 Socket field 1 4 2 3 Connectors: 1 pH electrode 2 Reference electrode 3 Temperature sensor 4 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. 8 ba75793e05 09/2011 pH 3210 Safety 2 Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the meter. Consequently, all responsible personnel must read this operating manual before working with the meter. The operating manual must always be available within the vicinity of the meter. Target group Safety instructions The meter was developed for work in the field and in the laboratory. Thus, we assume that, as a result of their professional training and experience, the operators will know the necessary safety precautions to take when handling chemicals. Safety instructions in this operating manual are indicated by the warning symbol (triangle) in the left column. The signal word (e.g. "Caution") indicates the level of danger: Warning indicates instructions that must be followed precisely in order to avoid possibly great dangers to personnel. Caution indicates instructions that must be followed precisely in order to avoid the possibility of slight injuries or damage to the meter or the environment. Further notes Note indicates notes that draw your attention to special features. Note indicates cross-references to other documents, e.g. operating manuals. ba75793e05 09/2011 9 Safety pH 3210 2.1 Authorized use This meter is authorized exclusively for pH and ORP measurements in a laboratory or field environment. The technical specifications as given in chapter 7 TECHNICAL DATA must be observed. Only the operation and running of the meter according to the instructions given in this operating manual is authorized. Any other use is considered unauthorized. 2.2 General safety instructions This meter is constructed and tested in compliance with the IEC 1010 safety regulations for electronic measuring instruments. It left the factory in a safe and secure technical condition. Function and operational safety The smooth functioning and operational safety of the meter can only be guaranteed if the generally applicable safety measures and the specific safety instructions in this operating manual are followed during operation. The smooth functioning and operational safety of the meter can only be guaranteed under the environmental conditions that are specified in chapter 7 TECHNICAL DATA. If the meter was transported from a cold environment to a warm environment, the formation of condensate can lead to the faulty functioning of the meter. In this event, wait until the temperature of the meter reaches room temperature before putting the meter back into operation. Caution The meter is only allowed to be opened by authorized personnel. 10 ba75793e05 09/2011 pH 3210 Safety Safe operation If safe operation is no longer possible, the meter must be taken out of service and secured against inadvertent operation! Safe operation is no longer possible if the meter: has been damaged in transport has been stored under adverse conditions for a lengthy period of time is visibly damaged no longer operates as described in this manual. If you are in any doubt, please contact the supplier of the meter. Obligations of the purchaser The purchaser of this meter must ensure that the following laws and guidelines are observed when using dangerous substances: EEC directives for protective labor legislation National protective labor legislation Safety regulations Safety datasheets of the chemical manufacturers. Caution In addition to the safety instructions mentioned here, also follow the safety instructions of the sensors used. The operating manuals of the sensors are available on the supplied CD and on the Internet under www.WTW.com. ba75793e05 09/2011 11 Safety 12 pH 3210 ba75793e05 09/2011 pH 3210 Commissioning 3 Commissioning 3.1 Scope of delivery pH meter, pH 3210 4 batteries 1.5 V Mignon type AA Short instructions CD-ROM with detailed operating manual 3.2 Initial commissioning Perform the following activities: Insert the supplied batteries Switch on the meter Set the date and time 3.2.1 Inserting the batteries 1 Unscrew the two screws (1) on the underside of the meter. 2 Open the battery compartment (2) on the underside of the meter. 1 2 3 ba75793e05 09/2011 Place four batteries (type Mignon AA) in the battery compartment. 13 Commissioning pH 3210 Note Alternatively, you can also use Ni-MH rechargeable batteries (type Mignon AA). In order to charge the batteries, an external charging device is required. 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. 4 3.2.2 1 Close the battery compartment (2) and tighten the screws (1). Switching on the meter Press the key. The meter performs a self-test. The display shows the manufacturer's logo while the self-test is being performed. Subsequently, the meter switches to the measuring mode (measured value display). Note The meter has an energy saving feature to avoid unnecessary battery depletion. The energy saving feature switches off the meter if no key is pressed during the adjusted interval. (How to set the switch-off interval, see section 4.3.1). 3.2.3 1 14 Setting the date and time See section 4.2.4 ba75793e05 09/2011 pH 3210 Operation Switching on 4 Operation 4.1 Switching on the meter Press the key. 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 Menu Switching off °C 22.11.2010 08:00 Press the key. Automatic switch-off The instrument has an automatic switch-off function in order to save the batteries (see section 4.3.1). The automatic switch-off switches off the meter if no key is pressed for an adjustable period. Display illumination The meter automatically switches off the display illumination if no key has been pressed for 15 seconds. The illumination is switched on with the next keystroke again. You can also generally switch the display illumination on or off (see section 4.3.1). ba75793e05 09/2011 15 Operation pH 3210 4.2 General operating principles This section contains basic information on the operation of the pH 3210. Operating elements, display Operating modes, navigation An overview of the operating elements and the display is given in section 1.1 and section 1.2. An overview of the operating modes and navigation of the pH 3210 is given in section 4.2.1 and section 4.2.2. 4.2.1 Operating modes The meter has the following operating modes: Measurement The measurement data of the connected sensor is 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 manually or automatically Setting The system menu or a sensor menu with submenus, settings and functions is displayed 16 ba75793e05 09/2011 pH 3210 Operation 4.2.2 Measured value display Navigation In the measured value display, you can open the menu for calibration and measurement settings with (short keystroke). open the Storage & config menu with the sensor-independent settings by pressing (long keystroke, approx. 2 s on ). _ change the display in the selected measuring window (e. g. pH <−> mV) by pressing . Menus and dialogs The menus for settings and dialogs in procedures contain further submenus. The selection is made with the <▲><▼> keys. The current selection is displayed with a frame. Submenus The name of the submenu is displayed at the upper edge of the frame. Submenus are opened by confirming with . Example: System General Measurement Interface Clock Service information Reset Back 22.11.2010 08:00 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: General Language: Beep: Illumination: Contrast: Switchoff time: Back ba75793e05 09/2011 Deutsch Off On 50 % 1h 22.11.2010 08:00 17 Operation pH 3210 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 Data storage Buffer: One point calibration: Calibration interval: Unit for slope: Back Messages TEC Yes 7d mV/pH 22.11.2010 08:00 Information is marked by the i symbol. It cannot be selected. Example: pH Calibration record 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 22.11.2010 08:00 Note The principles of navigation are explained in the two following sections by reference of examples: Setting the language (section 4.2.3) Setting the date and time (see section 4.2.4). 18 ba75793e05 09/2011 pH 3210 Operation 4.2.3 1 Example 1 on navigation: Setting the language Press the key. The measured value display appears. The instrument is in the measuring mode. pH 6.949 25.0 Menu 2 °C 22.11.2010 08:00 _ Using /[Menu] open the Storage & config menu. The instrument is in the setting mode. Storage & config System Data storage Back ba75793e05 09/2011 22.11.2010 08:00 3 Select the System submenu with <▲><▼>. The current selection is displayed with a frame. 4 Open the System submenu with . 19 Operation pH 3210 System General Measurement Interface Clock Service information Reset Back 22.11.2010 08:00 5 Select the General submenu with <▲><▼>. The current selection is displayed with a frame. 6 Open the General submenu with . General Language: Beep: Illumination: Contrast: Switchoff time: Back 7 Deutsch Off On 50 % 1h 22.11.2010 08:00 Open the setting mode for the Language with . General Language: Beep: Illumination: Contrast: Switchoff time: Back 8 20 Deutsch Off On 50 % 1h 22.11.2010 08:00 Select the required language with <▲><▼>. ba75793e05 09/2011 pH 3210 Operation 9 ba75793e05 09/2011 Confirm the setting with . The meter switches to the measuring mode. The selected language is active. 21 Operation pH 3210 4.2.4 Example 2 on navigation: Setting the date and time The meter has a clock with a date function. The date and time are indicated in the status line of 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. Note After a fall of the supply voltage (empty batteries), the date and time are reset to 01.01.2008 00, 00:00 hours. Setting the date, time and date format 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 /[Menu], open the Storage & config menu. The instrument is in the setting operating 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 22 dd.mm.yyyy 30.10.2008 14:53:40 22.11.2010 08:00 ba75793e05 09/2011 pH 3210 ba75793e05 Operation 09/2011 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 If necessary, select and set the Date with <▲><▼> and . 9 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. 23 Operation pH 3210 4.3 Sensor-independent settings The Storage & config menu comprises the following settings: System (see section 4.3.1). Data storage (see section 4.3.1) 4.3.1 Overview System The following sensor-independent meter characteristics can be adjusted in the Storage & config/System menu: Menu language Illumination Display contrast Interval of the automatic switch-off Clock and date function Reset of all sensor-independent system settings to the default condition Settings _ To open the Storage & config menu, press the /[Menu] or key in the measured value display. After completing the settings, switch to the measured value display with . Menu item Setting Description System / General / Language Deutsch English (further) Select the menu language System / General / Illumination Auto On Off Switching the display illumination on/off System / General / Contrast 0 ... 100 % Changing the display contrast System / General / Switchoff time 10 min ... 24 h Adjust the switch-off time System / Clock Time Date Date format Settings of time and date. For details, see section 4.2.4 System / Service information 24 Hardware version and software version of the meter are displayed. ba75793e05 09/2011 pH 3210 Operation Menu item Setting Description System / Reset - Resets the system settings to the default values. For details, see section 4.6.2 4.3.2 Data storage This menu contains all functions to display, edit and erase stored measured values and calibration records. Note Detailed information on the storage functions of the pH 3210 is given in section 4.5. ba75793e05 09/2011 25 Operation pH 3210 4.3.3 Automatic Stability control The automatic Stability control function continuously 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 4.3.1). The measured parameter flashes on the display as soon as the measured value is outside the allowed stability range if you switch over between the measured parameters with . if the automatic Stability control function is switched off. 26 ba75793e05 09/2011 pH 3210 Operation 4.4 pH value / ORP voltage 4.4.1 General information You can measure the following variables: pH value [ ] ORP [mV] Temperature measurement For reproducible pH measurements, it is essential to measure the temperature of the test sample. You have the following possibilities to measure the temperature: Automatic measurement of the temperature by the temperature sensor (NTC30 or Pt1000) integrated in electrode. Manual determination and input of the temperature. The meter 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: Preparatory activities ba75793e05 09/2011 Temperature sensor yes Resolution of the temp. display 0.1 °C - 1 °C Mode Automatic with temperature sensor Manual Perform the following preparatory activities when you want to measure: 1 Connect a pH or ORP electrode to the meter. The pH measuring window is displayed. 2 If necessary, select the pH or mV display with . 3 Adjust the temperature of the solutions and measure the current temperature if the measurement is made without a temperature sensor. 4 Calibrate or check the meter with the combination electrode. 27 Operation pH 3210 4.4.2 Measuring the pH value 1 Perform the preparatory activities according to section 4.4.1. 2 Immerse the pH electrode in the test sample. pH 6.949 25.0 Menu 3 Stability control (AutoRead ) °C 22.11.2010 08:00 Select the pH or mV display with . 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 start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see page 26) in the System menu. 1 Freeze the measured value with . The [HOLD] status indicator is displayed. The HOLD function is active. 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. Note You can prematurely terminate the Stability control function manually with at any time. 28 ba75793e05 09/2011 pH 3210 Operation 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 representation. The Stability control function checks whether the measured values are stable within the monitored time interval. Measured parameter Time interval Stability in the time interval pH value 15 seconds Δ pH: better than 0.01 Temperature 15 seconds Δ T (° C): Better than 0.02 The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer. ba75793e05 09/2011 29 Operation pH 3210 4.4.3 Measuring the ORP Note ORP electrodes are not calibrated. However, you can check ORP electrodes using a test solution. 1 Perform the preparatory activities according to section 4.4.1. 2 Submerse the ORP electrode in the sample. U 157.0 mV 24.8 °C Menu 3 Stability control (AutoRead ) 22.11.2010 08:00 Select the mV display with . 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 start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see page 26) in the System menu. 1 30 Freeze the measured value with . The [HOLD] status indicator is displayed. The HOLD function is active. ba75793e05 09/2011 pH 3210 Operation 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 current measurement data are output to the interface. Measurement data meeting the stability control criterion are marked by AR. Note You can prematurely terminate the Stability control function manually with at any time. 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 representation. The Stability control function checks whether the measured values are stable within the monitored time interval. Measured parameter Time interval Stability in the time interval ORP 15 seconds Δ mV: better than 0.3 Temperature 15 seconds Δ T (° C): Better than 0.02 The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer. ba75793e05 09/2011 31 Operation pH 3210 4.4.4 Overview Settings for pH and ORP measurements The following settings are possible for pH and ORP measurements: Resolution Calibration interval Buffers for calibration Unit of the temperature Automatic stability control Unit for slope Calibration record (display) Settings 32 The settings are made in the measuring menu of the pH/ORP measurement. To open the settings, activate the relevant measuring window in the measured value display and press the key shortly. After completing the settings, switch to the measured value display with . Menu item Possible setting Description Calibration / Calibration record - Displays the calibration record of the last calibration. Calibration /Buffer TEC NIST/DIN ConCal ... Buffer sets to be used for pH calibration. More buffers and details, see section 4.4.5. Calibration /One point calibration Yes No Rapid calibration with 1 buffer Calibration / Calibration interval 1 ... 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 window. Calibration /Unit for slope mV/pH % Unit of the slope. The % display refers to the Nernst slope of -59.16 mV/pH (100 x determined slope/Nernst slope). Man. temperature -25 ... +130 °C Entry of the manually determined temperature. For measurements without temperature sensor only. ba75793e05 09/2011 pH 3210 ba75793e05 Operation 09/2011 Menu item Possible setting Description Temperature unit °C °F Temperature unit, degrees Celsius or degrees Fahrenheit. All temperatures are displayed with the selected unit. Resolution pH 0.001 0.01 0.1 Resolution of the pH display: Resolution mV 0.1 1 Resolution of the mV display: Stability control On / Off Switches on or off the automatic stability control during measurement (see section 4.3.3) Reset - Resets all sensor settings to the delivery condition (see section 4.6.1). 33 Operation pH 3210 4.4.5 Why calibrate? When do you have to calibrate? Buffer sets for calibration 34 pH calibration pH combination electrodes age. This changes the zero point (asymmetry) and slope of the pH combination 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. After connecting another combination electrode When the calibration interval has expired 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. 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 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 ba75793e05 09/2011 pH 3210 ba75793e05 Operation 09/2011 No. Buffer set* pH values at 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 19 Precisa * 3,996 7,003 8,999 25 °C 35 Operation pH 3210 No. Buffer set* pH values at 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 * 4,000 7,000 10,000 20 °C 24 USABlueBook * 4,000 7,000 10,000 20 °C * Brand names or trade names are trademarks of their respective owners protected by law. Note The buffers are selected in the menu, pH / /[Menu] / Calibration / Buffer (see page 32). 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: 1-point Determined values Displayed calibration data Asy Zero point = Asy Slope = Nernst slope (-59.16 mV/pH at 25 °C) 2-point 36 Asy Slp. Zero point = Asy Slope = Slp. ba75793e05 09/2011 pH 3210 Operation 3-point to 5-point Determined values Displayed calibration data Asy Slp. Zero point = Asy Slope = Slp. The calibration line is calculated by linear regression. Note You can display the slope in the units, mV/pH or % (see page 24). Stability control The calibration procedure automatically activates the stability control function. The current measurement with stability control can be terminated at any time (accepting the current value). Calibration record The new calibration values are displayed when the calibration is finished. Display calibration You can have the data of the last calibration displayed (see page 50). Calibration evaluation 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 ++ -20 ... +20 -58 ... -57 + -25 ... +25 -61 ... -60.5 or -57 ... -56 - -30 ... +30 -62 ... -61 or -56 ... -50 < -30 or > 30 ... -62 or ... -50 Clean the combination electrode according to the electrode operating manual Error ba75793e05 09/2011 Error 37 Operation pH 3210 Display Calibration record Zero point [mV] Slope [mV/pH] Eliminate the error according to chapter 6 WHAT TO DO IF... (page 55) Preparatory activities Perform the following preparatory activities when you want to calibrate: 1 Connect the pH combination electrode to the meter. The pH measuring window is displayed. 2 Keep the buffer solutions ready. Adjust the temperature of the buffer solutions, or measure the current temperature, if you measure without a temperature sensor. 4.4.6 Calibration interval The calibration evaluation is indicated on the display as a sensor symbol. The sensor symbol flashes after the adjusted calibration interval has expired. It is still possible to measure. Note To ensure the high measuring accuracy of the measuring system, calibrate after the calibration interval has expired. Setting the calibration interval 38 The calibration interval is set to 7 days (d7) in the factory. You can change the interval (1 ... 999 days): 1 Open the menu for measurement settings with /[Menu]. 2 In the Calibration / Calibration interval menu, set the calibration interval with <▲><▼>. 3 Confirm the setting with . 4 Exit the menu with . ba75793e05 09/2011 pH 3210 Operation 4.4.7 Carrying out an automatic calibration (AutoCal) Make sure that in the sensor menu, Buffer menu, the buffer set is correctly selected (see page 32). 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. Note 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 In the measured value display, select the measured parameter, pH or mV with . 2 Start the calibration with . The calibration display for the first buffer appears (voltage display). Buffer pH -180.0 24.8 1 mV °C AutoCal TEC 22.11.2010 08:00 ba75793e05 09/2011 3 Thoroughly rinse the electrode with deionized water. 4 Immerse the electrode in buffer solution 1. 5 When measuring without temperature sensor: Measure the temperature of the buffer manually and enter it with <▲><▼>. 6 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. 39 Operation pH 3210 Buffer pH -180.0 24.8 10.011 mV °C AutoCal TEC AR 22.11.2010 08:00 7 Wait for the end of the measurement with stability control or accept the calibration value with . The calibration display for the next buffer appears. 8 If necessary, terminate the calibration as a single-point calibration with . The calibration record is displayed. Note For single-point calibration, the instrument uses the Nernst slope (-59.16 mV/pH at 25 °C) and determines the zero point of the electrode. Continuing with twopoint calibration 9 Thoroughly rinse the electrode with deionized water. 10 Immerse the electrode in buffer solution 2. 11 When measuring without temperature sensor: Measure the temperature of the buffer manually and enter it with <▲><▼>. 12 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. pH Buffer 0.0 24.8 7.000 mV °C AutoCal TEC AR 22.11.2010 08:00 40 ba75793e05 09/2011 pH 3210 Operation Continuing with threeto five-point calibration 13 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. 14 If necessary, terminate the calibration as a two-point calibration with . The calibration record is displayed. 15 Thoroughly rinse the combination electrode with deionized water. 16 Immerse the electrode in buffer solution 3. 17 When measuring without temperature sensor: Measure the temperature of the buffer manually and enter it with <▲><▼>. 18 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. Buffer pH 180.0 24.8 4.010 mV °C AutoCal TEC AR 22.11.2010 08:00 19 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). 20 If necessary, use to finish the calibration. The calibration record is displayed. or Switch to calibration with the next buffer with . Note 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. ba75793e05 09/2011 41 Operation pH 3210 4.4.8 Carrying out a manual calibration (ConCal) Make sure that in the sensor menu, Buffer menu, the ConCal buffer set is correctly selected (see page 32). Use any one to five buffer solutions in ascending or descending order. Note 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 In the measured value display, select the measured parameter pH or mV with . 2 Start the calibration with . The calibration display appears. Buffer pH 0.0 24.8 1 mV °C ConCal 22.11.2010 08:00 42 3 Thoroughly rinse the combination electrode with deionized water. 4 Immerse the electrode in buffer solution 1. 5 When measuring without temperature sensor: Measure the temperature of the buffer manually and enter it with <▲><▼>. 6 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. ba75793e05 09/2011 pH 3210 Operation 7.000 Buffer pH 0.0 24.8 mV °C ConCal AR 22.11.2010 08:00 7 Wait for the measurement with stability control to be completed. Set the nominal buffer value for the measured temperature with <▲><▼>. Buffer pH 7.000 24.8 1 ▲ ▼ °C ConCal 22.11.2010 08:00 8 Set the nominal buffer value for the measured temperature with <▲><▼>. 9 Accept the calibration value with . The calibration display for the next buffer appears (voltage display). 10 If necessary, terminate the calibration as a single-point calibration with . The calibration record is displayed. Note For single-point calibration, the instrument uses the Nernst slope (-59.16 mV/pH at 25 °C) and determines the zero point of the electrode. ba75793e05 09/2011 43 Operation Continuing with twopoint calibration pH 3210 11 Thoroughly rinse the combination electrode with deionized water. 12 Immerse the electrode in buffer solution 2. 13 When measuring without temperature sensor: Measure the temperature of the buffer manually and enter it with <▲><▼>. 14 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. 15 Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with . The pH value of the buffer solution is displayed. Buffer pH 4.035 24.8 2 ▲ ▼ °C ConCal 22.11.2010 08:00 Continuing with threeto five-point calibration 44 16 Set the nominal buffer value for the measured temperature with <▲><▼>. 17 Accept the calibration value with . The calibration display for the next buffer appears (voltage display). 18 If necessary, finish the calibration procedure as a two-point calibration with . The calibration record is displayed. 19 Thoroughly rinse the electrode with deionized water. 20 Immerse the electrode in the next buffer solution. 21 When measuring without temperature sensor: Measure the temperature of the buffer manually and enter it with <▲><▼>. ba75793e05 09/2011 pH 3210 Operation 22 Start the measurement with . The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes. 23 Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with . The pH value of the buffer solution is displayed. Buffer pH 3 ▲ ▼ 9.958 24.8 °C ConCal 22.11.2010 08:00 24 Set the nominal buffer value for the measured temperature with <▲><▼>. 25 Accept the calibration value with . The calibration display for the next buffer appears (voltage display). 26 If necessary, use to finish the calibration. The calibration record is displayed. or Continue calibrating using the next buffer with . Note 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. 4.4.9 Displaying the calibration record Displaying calibration records The calibration record of the last calibration is to be found under the menu item, Calibration / Calibration record. To open it in the measured value display, press the key. _ The calibration records of the last calibrations (up to 10) are available in the menu, /[Menu] / Calibration / Calibration data storage and in the menu, /[Menu] / Storage & config/Data storage / Calibration data storage. _ ba75793e05 09/2011 45 Operation pH 3210 4.4.10 Continuous measurement control (CMC function) The continuous measurement control (CMC function) enables to quickly and safely evaluate the current measured value at a glance. After each successful calibration, the scale of the pH measuring range is displayed in the measured value display. Here you can very easily see whether or not the current measured value is in the calibrated part of the measuring range. The following information is displayed: 1 2 pH 0 6.093 14 25.0 °C Menu 3 4 22.11.2010 08:00 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 Current measured pH value (pointer) 4 Line marks for all nominal buffer values used for the last valid calibration The limits of the calibrated range are determined by the buffers used for calibration: Lower limit: Upper limit: 46 Buffer with the lowest pH value minus 2 pH units Buffer with the highest pH value plus 2 pH units ba75793e05 09/2011 pH 3210 Operation 4.5 Storage You can transmit measured values (datasets) to the data storage: Manual storage (see section 4.5.1) Measurement dataset A complete dataset consists of: Date/time Measured value of the connected sensor Measured temperature value of the connected sensor AutoRead info: AR appears with the measured value if the AutoRead criterion was met while storing (stable measured value). Otherwise, the AR display is missing. Calibration evaluation: +++, ++, +, -, or no evaluation Storage locations ba75793e05 09/2011 The pH 3210 meter has a measurement data memory. Storage Maximum number of datasets Manual data storage 200 47 Operation pH 3210 4.5.1 Manual storage You can transmit a measurement dataset to the data storage as follows: 1 Press the key shortly. The menu for manual storage appears. Manual data storage 4 From 200 30.10.2008 11:24:16 pH 7.000 24.8 °C AR +++ ID number: Continue Back 2 If the storage is full 1 22.11.2010 08:00 If necessary, change and confirm the ID number (1 ... 10000) with <▲><▼> and . The dataset is stored. The instrument switches to the measured value display. The following window appears if all 200 storage locations are occupied: Warning Data storage full. Erase? Yes No Back 22.11.2010 08:00 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. 4.5.2 Editing the measured value storage The contents of the manual or automatic measurement data storage can be shown on the display. The measurement data storage has a function to erase the entire contents. 48 ba75793e05 09/2011 pH 3210 Operation Editing the data storage Settings The storage is edited in the menu, Storage & config/ Data storage. To open the Storage & config menu, press the /[Menu] key in the measured value display. _ 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 <▲><▼>. Quit the display with /[Back]. Data storage / Manual data storage / Erase - Erases the entire manual measurement data storage. Note: All calibration data remains stored when this action is performed. Display presentation of a dataset Manual data storage 3 of 64 30.10.2008 11:24:16 ID number: 1 Quitting the display pH 7.000 24.8 °C AR +++ Back 22.11.2010 08:00 To quit the display of stored measuring datasets, you have the following options: Switch directly to the measured value display with . Quit the display and move to the next higher menu level with / [Back]. ba75793e05 09/2011 49 Operation pH 3210 4.5.3 Erasing the measurement data storage How to erase the measurement data storage is described in section 4.5.2 EDITING THE MEASURED VALUE STORAGE. 50 ba75793e05 09/2011 pH 3210 Operation 4.6 Reset You can reset (initialize) all sensor settings and sensor-independent settings separately from each other. 4.6.1 Resetting the measurement settings Note The calibration data are reset to the default settings together with the measuring parameters. Recalibrate after performing a reset. pH The following settings for pH measurements are reset to the default settings with the Reset function: Setting Default settings Buffer TEC Cal. interval 7d Unit for slope mV/pH Measured parameter pH Resolution pH 0.001 Resolution mV 0.1 Asymmetry 0 mV Slope -59.16 mV Man. temperature 25 °C One point calibration Off The sensor settings are reset under the Reset menu item in the measuring menu. To open the settings, activate the relevant measuring window in the measured value display and press the /[Menu] key shortly. ba75793e05 09/2011 51 Operation pH 3210 4.6.2 Resetting the system settings The following system settings can be reset to the delivery status: Setting Default settings Language English Temperature unit °C Beep On Contrast 50 % Illumination On Switchoff time 1h The system settings are reset in the menu, Storage & config / System / Reset. To open the Storage & config menu, press the /[Menu] key in the measured value display. _ 52 ba75793e05 09/2011 pH 3210 Maintenance, cleaning, disposal 5 Maintenance, cleaning, disposal 5.1 Maintenance The only maintenance activity required is replacing the batteries. Note See the relevant operating manuals of the combination electrodes for instructions on maintenance. 5.1.1 Replacing the batteries 1 Unscrew the two screws (1) on the underside of the meter. 2 Open the battery compartment (2) on the underside of the meter. 1 2 3 Remove the four batteries from the battery compartment. 4 Place four new batteries (type Mignon AA) in the battery compartment. Note Alternatively, you can also use Ni-MH rechargeable batteries (type Mignon AA). In order to charge the batteries, an external charging device is required. 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. ba75793e05 09/2011 53 Maintenance, cleaning, disposal pH 3210 5 5.2 Close the battery compartment (2) and tighten the screws (1). Cleaning Occasionally wipe the outside of the meter with a damp, lint-free cloth. Disinfect the housing with isopropanol as required. Caution The housing is made of synthetic material (ABS). Thus, avoid contact with acetone or similar detergents that contain solvents. Remove any splashes immediately. 5.3 Packing This meter is sent out in a protective transport packing. We recommend: Keep the packing material. The original packing protects the meter against damage during transport. 5.4 Disposal Note This meter contains batteries. Batteries that have been removed must only be disposed of at a recycling facility set up for this purpose or via the retail outlet. It is illegal to dispose of it in household refuse. 54 ba75793e05 09/2011 pH 3210 What to do if... 6 Error message OFL, UFL Error message Error What to do if... Cause Remedy pH combination electrode: – Measured value outside the measuring range – Use suitable combination electrode – Air bubble in front of the junction – Remove air bubble – Air in the junction – Extract air or moisten junction – Cable broken – Replace combination electrode – Gel electrolyte dried out – Replace combination electrode Cause Remedy pH combination electrode: – The values determined for zero point and slope of the combination electrode are outside the allowed limits. – Recalibrate – Junction contaminated – Clean junction – Combination electrode broken – Replace combination electrode Buffer solutions: ba75793e05 09/2011 – Incorrect buffer solutions – Change calibration procedure – Buffer solutions too old – Use only once. Note the shelf life – Buffer solutions depleted – Change solutions 55 What to do if... pH 3210 No stable measured value Cause Remedy pH combination electrode: – Junction contaminated – Clean junction – Membrane contaminated – Clean membrane Test sample: – pH value not stable – Measure with air excluded if necessary – Temperature not stable – Adjust temperature if necessary Combination electrode + test sample: Sensor symbol flashes – Conductivity too low – Use suitable combination electrode – Temperature too high – Use suitable combination electrode – Organic liquids – Use suitable combination electrode Cause – Calibration interval expired Display Cause – batteries almost empty 56 Remedy – Recalibrate the measuring system Remedy – Replace the batteries (see section 5.1 MAINTENANCE) ba75793e05 09/2011 pH 3210 What to do if... Obviously incorrect measured values Cause pH combination electrode: – pH combination electrode unsuitable – Use suitable combination electrode – Temperature difference between buffer and test sample too high – Adjust temperature of buffer or sample solutions – Measurement procedure not suitable – Follow special procedure Meter does not react to keystroke Cause You want to know which software version is in the meter Cause ba75793e05 09/2011 Remedy – Operating condition undefined or EMC load unallowed – E. g., a question by the service department Remedy – Processor reset: Press the and key simultaneously Remedy – Switch on the meter. Open the menu, [Menu] / Storage & config / System / Service information. The instrument data is displayed. _ 57 What to do if... 58 pH 3210 ba75793e05 09/2011 pH 3210 Technical data Dimensions Weight Mechanical structure 7 Technical data 7.1 General data approx. 180 x 80 x 55 mm approx. 0.4 kg Type of protection IP 67 Electrical safety Protective class III Test certificates CE, cETLus Ambient conditions Power supply Sensor input Guidelines and norms used ba75793e05 09/2011 Storage - 25 °C ... + 65 °C Operation -10 °C ... + 55 °C Allowable relative humidity Annual mean: < 75 % 30 days/year: 95 % Other days: 85 % Batteries 4 x 1.5 V alkali-manganese batteries, type AA Rechargeable batteries 4 x 1,2 V NiMH rechargeable batteries, type AA (no charging function) Operational life up to 1000 h without / 150 h with illumination Input resistance > 5 * 1012 ohm Input current < 1 * 10-12 A EMC EC directive 2004/108/EC EN 61326-1 EN 61000-3-2 EN 61000-3-3 FCC Class A Meter safety EC directive 2006/95/EC EN 61010-1 IP protection class EN 60529 59 Technical data pH 3210 7.2 Measuring ranges, resolution Measuring ranges, resolution, accuracy Variable Measuring range Resolution pH - 2.0 ... + 20.0 0.1 - 2.00 ... + 20.00 0.01 - 2.000 ... + 19.999 0.001 - 1200.0 ... + 1200.0 0.1 - 2500 ... + 2500 1 T [°C] - 5.0 ... + 105.0 0.1 T [°F] 23.0 ... + 221.0 0.1 Variable Range Increment Tmanual [°C] - 25 ... + 130 1 Tmanual [°F] -13 ... + 266 1 Variable Accuracy Temperature of the test sample - 2.0 ... + 20.0 ± 0.1 + 15 °C ... + 35 °C - 2.00 ... + 20.00 ± 0.01 + 15 °C ... + 35 °C - 2.000 ... + 19.999 ± 0.005 + 15 °C ... + 35 °C - 2500 ... + 2500 ±1 + 15 °C ... + 35 °C -1200.0 ... +1200.0 ± 0.3 + 15 °C ... + 35 °C U [mV] Manual temperature input Accuracy (± 1 digit) pH / range * U [mV] / range T [°C] / temperature sensor NTC 30 ± 0.1 PT 1000 ± 0.1 * when measuring in a range of ± 2 pH around a calibration point Note The accuracy values specified here apply exclusively to the meter. The accuracy of the combination electrodes and buffer solutions has to be taken into account additionally. 60 ba75793e05 09/2011 pH 3210 Technical data FCC Class A Equipment Statement Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Changes or modifications not expressly approved by the manufacturer could void the user‘s authority to operate the equipment. ba75793e05 09/2011 61 Technical data 62 pH 3210 ba75793e05 09/2011 pH 3210 Lists 8 Lists This chapter provides additional information and orientation aids. Specialist terms Index The glossary briefly explains the meaning of the specialist terms. However, terms that should already be familiar to the target group are not described here. The index will help you to find the topics that you are looking for. Glossary Adjusting To manipulate a measuring system so that the relevant value (e. g. the displayed value) differs as little as possible from the correct value or a value that is regarded as correct, or that the difference remains within the tolerance. Asymmetry see zero point AutoRange Name of the automatic selection of the measuring range. Calibration Comparing the value from a measuring system (e. g. the displayed value) to the correct value or a value that is regarded as correct. Often, this expression is also used when the measuring system is adjusted at the same time (see adjusting). Electromotive force of a combination electrode The electromotive force U of the combination electrode is the measurable electromotive force of a combination electrode in a solution. It equals the sum of all the galvanic voltages of the combination electrode. Its dependency on the pH results in the electrode function, which is characterized by the parameters, slope and zero point. Junction Measured parameter Measured value ba75793e05 09/2011 The junction is a porous body in the housing wall of reference electrodes or electrolyte bridges. It arranges the electrical contact between two solutions and makes the electrolyte exchange more difficult. The expression, junction, is also used for ground or junctionless transitions. The measured parameter is the physical dimension determined by measuring, e. g. pH, conductivity or D.O. concentration. The measured value is the special value of a measured parameter to be determined. It is given as a combination of the numerical value and unit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K). 63 Lists pH 3210 Molality ORP voltage The ORP is caused by oxidizing or reducing substances dissolved in water, if these substances become effective at an electrode surface (e. g. a gold or platinum surface). pH value The pH is a measure of the acidic or basic effect of an aqueous solution. It corresponds to the negative decadic logarithm of the molal hydrogen ions activity divided by the unit of the molality. The practical pH value is the value of a pH measurement. Potentiometry Name of a measuring technique. The signal (depending on the measured parameter) of the electrode is the electrical potential. The electrical current remains constant. Reset Resolution Slope Stability control (AutoRead ) Standard solution 64 Molality is the quantity (in Mol) of a dissolved substance in 1000 g solvent. Restoring the original condition of all settings of a measuring system. Smallest difference between two measured values that can be displayed by a meter. The slope of a linear calibration function. Function to control the measured value stability. The standard solution is a solution where the measured value is known by definition. It is used to calibrate a measuring system. Test sample Designation of the test sample ready to be measured. Normally, a test sample is made by processing the original sample. The test sample and original sample are identical if the test sample was not processed. Zero point The zero point of a pH combination electrode is the pH value at which the electromotive force of the pH combination electrode at a specified temperature is zero. Normally, this is at 25 °C. ba75793e05 09/2011 pH 3210 Lists Index A Battery compartment . . . . . . . . . . . . . . 13, 53 Storage locations . . . . . . . . . . . . . . . . . 47 Measurement dataset . . . . . . . . . . . . . . . . 47 Measuring ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Measuring menu pH/ORP . . . . . . . . . . . . . . . . . . . . . . . . 32 Menus (navigation) . . . . . . . . . . . . . . . . . . 17 Messages . . . . . . . . . . . . . . . . . . . . . . . . . 18 C O Authorized use . . . . . . . . . . . . . . . . . . . . . . 10 Automatic switch-off . . . . . . . . . . . . . . . . . . 15 AutoRead pH . . . . . . . . . . . . . . . . . . . . . . . . . 28, 30 B Calibration pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Calibration evaluation pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Calibration interval . . . . . . . . . . . . . . . . . . . 38 Calibration points pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 D P pH buffer sets . . . . . . . . . . . . . . . . . . . . . . 34 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 9 R Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Date and time . . . . . . . . . . . . . . . . . . . . . . . 22 Default settings Measured parameter . . . . . . . . . . . . . . 51 System settings . . . . . . . . . . . . . . . . . . 52 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 E Energy saving feature . . . . . . . . . . . . . . . . 14 I Initial commissioning . . . . . . . . . . . . . . 13, 14 Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Interval calibration . . . . . . . . . . . . . . . . . . . . . . . 38 K Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 M Measured value display . . . . . . . . . . . . . . . 17 Measurement accuracy . . . . . . . . . . . . . . . 38 Measurement data memory Edit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Erase . . . . . . . . . . . . . . . . . . . . . . . . . . 49 ba75793d05 Operational safety . . . . . . . . . . . . . . . . . . . 10 09/2011 S Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Scope of delivery . . . . . . . . . . . . . . . . . . . . 13 Setting the date . . . . . . . . . . . . . . . . . . . . . 14 Setting the time . . . . . . . . . . . . . . . . . . . . . 14 Single-point calibration pH . . . . . . . . . . . . . . . . . . . . . . . . . 40, 43 Slope pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . 8 Stability control Automatic . . . . . . . . . . . . . . . . . . . . . . . 26 T Temperature measurement pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Three-point calibration pH . . . . . . . . . . . . . . . . . . . . . . . . . 41, 44 Two-point calibration pH . . . . . . . . . . . . . . . . . . . . . . . . . 40, 44 Z Zero point of pH combination electrode . . . 34 65 Lists 66 pH 3210 ba75793d05 09/2011 Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1 D-82362 Weilheim Germany Tel: Fax: E-Mail: Internet: +49 (0) 881 183-0 +49 (0) 881 183-100 +49 (0) 881 183-420 Info@WTW.com http://www.WTW.com
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.6 Linearized : Yes Author : direim Create Date : 2011:09:14 15:52:19Z Modify Date : 2015:09:17 14:09:06-06:00 Has XFA : No XMP Toolkit : Adobe XMP Core 5.6-c015 81.157285, 2014/12/12-00:43:15 Creator Tool : FrameMaker 10.0.1 Metadata Date : 2015:09:17 14:09:06-06:00 Format : application/pdf Title : WTW pH 3210 Operating Manual Creator : direim Producer : Acrobat Elements 9.0.0 (Windows) Document ID : uuid:607207ef-fa62-4fde-ab9d-1b9bb7322f60 Instance ID : uuid:5119dc3d-c82b-3e48-9ab6-ef5d1997bee4 Page Mode : UseOutlines Page Count : 68EXIF Metadata provided by EXIF.tools