RAE Systems QRAE3 QRAE3 User Manual QRAE 3 User s Guide
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![QRAE 3 User’s Guide 9 Icon Function All sensors tested and calibrated tick mark (all sensors have been bump tested and calibrated; no sensor is overdue for a bump test or calibration according to the intervals configured on the instrument 3.1.2. LCD Flip The QRAE 3 senses its vertical/horizontal orientation, and can automatically flip the display180 degrees, making it easy to read if the QRAE 3 is upside down. (You can turn this feature on or off in Programming Mode, under “Monitor.”) As the QRAE 3 is tilted, the sensor detects its orientation and inverts the screen when it passes its horizontal position. 3.1.3. Keys & Interface The QRAE 3 has two keys: MODE Y/+ In addition to their labeled functions, the keys labeled [MODE] and [Y/+] act as “soft keys” that control different parameters and make different selections within the instrument’s menus. From menu to menu, each key controls a different parameter or makes a different selection. Two panes along the bottom of the display are “mapped” to the keys. These change as menus change, but at all times the left pane corresponds to the [MODE] key, and the right pane corresponds to the [Y/+] key. Here are examples that show the relationships of the keys and functions: In addition to the functions described above, either key can be used to manually activate display backlighting. Press a key when the backlighting is off to turn it on.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-12.png)
![QRAE 3 User’s Guide 10 3.2. Screen Display For Various Numbers Of Active Sensors The QRAE 3 family of instruments can accommodate from one to four sensors. In order to maximize readability and the amount of information shown, the display is automatically reconfigured, according to the number and types of sensors in the QRAE 3. One se nsor. Two sensors. Three sensors. Four sensors. 3.3. Menus The reading menus are easy to step through by pressing the [MODE] and [Y/+] key. 4. Wireless Control And Submenus When you step through the main menu, as shown in the previous diagram, there are four screens for wireless communication, containing information on wireless settings and status. Note: These are only present if the QRAE 3 is equipped with a wireless module.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-13.png)
![QRAE 3 User’s Guide 13 6. Turning The QRAE 3 On And Off 6.1. Turning The QRAE 3 On With the instrument turned off, press and hold the [MODE] key until the audible alarm stops, and then release. When starting up, the QRAE 3 turns the backlight on and off, beeps once, blinks once, and vibrates once. A RAE Systems logo should appear first. During a normal startup, this is followed by a progression of screens that tell you the QRAE 3’s current settings: • Product name and model number, air flow type, and serial number • Application firmware version, build date, and build time • Installed sensors (including production/expiration/calibration date and alarm limit settings) • Current date, time, and temperature • User mode and operation mode • Battery type, voltage, shutoff voltage • Alarm mode and alarm settings • Datalog period (if it is activated) and interval • Policy Enforcement settings Then the QRAE 3’s main reading screen appears. It takes 1 to 2 minutes for sensors to show a reading, so if any have not warmed up by the time the main screen is shown, you will see “- -” instead of a numerical value until the sensor provides data (typically less than 2 minutes). Then it displays instantaneous readings similar to the following screen (depending on the sensors installed) and is ready for use. Note: If the battery is completely empty, then the display briefly shows the message “Battery Fully Discharged,” and the QRAE 3 shuts off. You should charge the battery or replace it with a fully charged battery before turning it on again. IMPORTANT! If a major error that prevents the QRAE 3 from functioning is found during startup, the message “Please Contact Service Department” is shown on the display. The instrument should be shut off and serviced. 6.2. Turning The QRAE 3 Off Press and hold [MODE]. A 5-second countdown to shutoff begins. You must hold your finger on the key for the entire shutoff process until the QRAE 3 is powered off. Caution: The alarm is very loud. During startup, you can mute most of the sound by holding a finger over the alarm port. Do not put tape over the alarm port to permanently mute it.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-16.png)
![QRAE 3 User’s Guide 14 6.3. Testing Alarm Indicators Under normal-operation mode and non-alarm conditions, the buzzer, vibration alarm, LED, and backlight can be tested at any time by pressing [Y/+] once. IMPORTANT! If any of the alarms do not respond to this test, check the Alarm Settings in Programming Mode. It is possible that any or all of the alarms have been turned off. If all of the alarms are turned on, but one or more of them (buzzer, LED lights, or vibration alarm) does not respond to this test, do not use the instrument. Contact your RAE Systems distributor for technical support. 6.4. Pump Status IMPORTANT! During operation, make sure the probe inlet and the gas outlet are free of obstructions. Obstructions can cause premature wear on the pump, false readings, or pump stalling. During normal operation, the pump icon alternately shows inflow and outflow as shown here: If there is a pump failure or obstruction that disrupts the pump, the alarm sounds and you see this icon blinking on and off: Once the obstruction is removed, you can restart the pump by pressing the [Y/+] key. If the pump does not restart, and the pump stall alarm continues, consult the Troubleshooting section of this guide or contact your RAE Systems distributor for technical support. Note: Pump Status is not indicated on the diffusion QRAE 3. 6.5. Calibration Status If one or more sensors requires calibration, then the screen displays the word “Alarm” at the top and alternates between the sensor reading and the word “Cal” with a highlighted background: Calibration is required if: • The sensor module has been replaced with one whose calibration is overdue. • The defined period of time between calibrations has been exceeded. (See Section 9 for information on policy enforcement.) • If you have changed the calibration gas type without recalibrating the instrument. • The sensor has failed a previous calibration.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-17.png)
![QRAE 3 User’s Guide 16 8. Programming The menu in Programming Mode is to adjust settings, calibrate sensors, and initiate communication with a computer. It has the following submenus: • Calibration • Measurement • Alarms • Datalog • Monitor • Wireless 8.1. Enter Programming In Basic Mode 1. To enter Programming Mode, press and hold [MODE] and [Y/+] until you see the Password screen. 2. Input the 4-digit password: • Increase the number from 0 through 9 by pressing [Y/+]. • Step from digit to digit using [MODE]. • After inputting the password’s four digits, advance to “OK.” • Press [Y/+] to register the password and enter Programming Mode. Otherwise, advance to “Cancel” then press “[Y/+]. If you make a mistake, you can cycle through the digits by pressing [MODE] and then using [Y/+] to change the number in each position. Note: The default password is 0000. Note: The password screen only appears when you enter the Programming Mode the first time after turning the instrument on in Basic Mode. If you have input the correct password, you do not have to input it again to enter Programming Mode until you turn the instrument off and on again.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-19.png)
![QRAE 3 User’s Guide 17 Once you enter Programming Mode, the Calibration screen is shown. Press [MODE] to step through the programming screens. To enter a menu and view or edit parameters in its submenus, press [Y/+].](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-20.png)
![QRAE 3 User’s Guide 18 8.2. Enter Programming In Advanced Mode 1. To enter Programming Mode, press and hold [MODE] and [Y/+] until you see the Calibration screen. No password is necessary in Advanced Mode. 2. Press [MODE] to step through the programming screens. To enter a menu and view or edit parameters in its submenus, press [Y/+].](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-21.png)
![QRAE 3 User’s Guide 20 8.3.2. Calibration Use this menu to perform zero or span calibration for one or more sensors, and change the gas concentration value assumed to be used in span calibration, as well as zero calibration and calibration reference gas. 8.3.2.1. Multi Bump Depending on the configuration of your QRAE 3 and the span gas you have, you can perform a bump test simultaneously on multiple sensors. The selected sensors and their values are shown on the screen. With calibration gas connected to the instrument, start a multiple bump test by pressing [Y/+]. If you do not want to perform a multiple bump test, press [MODE]. Note: You can abort a multiple bump test by pressing [MODE] once testing has started. When the Multi Bump test is done, a screen is shown, with the sensor names and either “Pass” or “Fail” shown next to them. 8.3.2.2. Multi Zero You can perform a zero calibration simultaneously on multiple sensors. This procedure determines the zero point of the sensor calibration curve for all the sensors that require a zero calibration. The instrument should be zero calibrated in clean ambient air with 20.9% oxygen. A zero calibration should precede a span calibration. The selected sensors are shown on the screen. Start a multiple zero test by pressing [Y/+]. If you do not want to perform a test, press [MODE]. Note: You can abort a multiple zero test by pressing [MODE] once testing has started. When the Multi Zero test is done, a screen labeled Calibration Results is shown, with the sensor names and either “Pass” or “Fail” shown next to them. 8.3.2.3. Multi Span Depending on the configuration of your QRAE 3 and the span gas you have, you can perform a span calibration simultaneously on multiple sensors. The selected sensors and their values are shown on the screen. With calibration gas connected to the instrument and turned on, start a multiple span calibration by pressing [Y/+]. If you do not want to perform a multiple span calibration, press [MODE]. Note: You can abort a multiple span calibration by pressing [MODE] once testing has started. When the Multi Span calibration is done, a screen labeled Calibration Results is shown, with the sensor names and either “Pass” or “Fail” shown next to them. 8.3.2.4. Single Bump You can perform a separate bump test on each individual sensor. The active sensors’ names are shown in a list. Press [MODE] to highlight the sensor you want to bump test, and then press [Y/+] to select it.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-23.png)
![QRAE 3 User’s Guide 21 When the Apply Gas screen is shown, connect the calibration gas to the instrument, and start the bump test by pressing [Y/+]. If you do not want to perform a single bump test, press [MODE] to quit. Note: You can abort a bump test by pressing [MODE] once testing has started. When the Multi Bump test is done, a screen is shown, with the sensor names and either “Pass” or “Fail” shown next to them. 8.3.2.5. Single Zero This allows you to perform zero (fresh air) calibration on individual sensors. The instrument should be zero calibrated in clean ambient air with 20.9% oxygen. A zero calibration should precede a span calibration. The active sensors’ names are shown in a list. Press [MODE] to highlight the sensor you want to zero calibrate, and then press [Y/+] to select it. When the Zero Calibration screen is shown with the sensor name and its measurement unit, start the zero calibration by pressing [Y/+]. If you do not want to perform a calibration, press [MODE] to quit. Note: You can abort a zero calibration by pressing [MODE] once testing has started. When the zero calibration is done, the Calibration Results screen is shown with either “Pass” or “Fail” shown. 8.3.2.6. Single Span Instead of performing a span calibration on more than one sensor simultaneously, you can select a single sensor and perform a span calibration. The active sensors’ names are shown in a list. Press [MODE] to highlight the sensor you want to span calibrate, and then press [Y/+] to select it. When the Apply Gas screen is shown with the sensor name and its measurement unit, connect a cylinder of span gas, start its flow, and then start the zero calibration by pressing [Y/+]. If you do not want to perform a span calibration, press [MODE] to quit. Note: You can abort a span calibration by pressing [MODE] once testing has started. When the span calibration is done, the Calibration Results screen is shown with either “Pass” or “Fail” shown. 8.3.2.7. Set LEL Cal. Gas For best response, it is desirable to calibrate an LEL sensor with the specific gas that you are surveying (target gas). Changing the gas requires selecting the right calibration reference gas in the QRAE 3. Choose the sensor, and then select from the list of reference gases. Select from a Custom Gases list that you create or the built-in Gas Library for your sensor (taken from RAE Systems’ Technical Note TN-156 or the table at the end of this user’s guide). Choose Custom Gases or Gas Library by pressing [MODE], and then press [Y/+] to make your selection.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-24.png)
![QRAE 3 User’s Guide 22 Up to eight custom gases are in the library. Scroll through the choices by pressing [Y/+], and then select the custom gas configuration by pressing [MODE] to highlight it. With “Save” highlighted, press [Y/+] to save your choice. If you choose from the Gas Library, press [Y/+] to scroll through the list, and then press [MODE] to make your selection. With “Save” highlighted, press [Y/+] to save your choice. The gas is saved, and then the screen briefly shows the Correction Factor applied to that gas by the QRAE 3. Note: The Gas Library contains many gases. To rapidly scroll through the list, press and hold [Y/+]. 8.3.2.8. Set Span Value You can individually set the span gas value for each sensor. The units of measure (ppm, %LEL, etc.) are shown on the display. Press [MODE] to scroll through the list of active sensor names. Then press [Y/+] to select one. Set the span value by pressing [Y/+] to increase a value, and pressing [MODE] to advance through the digits. Once your span value is input, press [MODE] to advance and highlight “OK.” Press [Y/+] to register the change and to advance to the next sensor in the list. When you reach the end of the list, press [MODE] to highlight “Exit,” and then press [Y/+] to select it. 8.3.3. Measurement The submenus for Measurement include Sensor On/Off, Change Measurement Gas, and LEL Measurement Units. 8.3.3.1. Sensor On/Off You can turn sensors on or off via this set of submenus. An “X” in a box to the left of a sensor’s name indicates it is turned on. 1. Press [MODE] to advance down the list of sensors. 2. Press [Y/+] to select/deselect a sensor. 3. Press [MODE] until “Exit” is selected. 4. Press [Y/+] to save your selection and exit to the Measurement menu. 8.3.3.2. Meas. Unit The measurement unit for displaying data from sensors can be changed. Your options are ppm (parts per million) mg/m3 (milligrams per cubic meter), and μmol/mol (micromoles per mole). 1. Press [MODE] to move between measurement units. 2. Press [Y/+] to select a measurement unit. 3. Press [MODE] until “Exit” is selected. 4. Press [Y/+] to save your selection and exit to the Measurement menu.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-25.png)
![QRAE 3 User’s Guide 23 8.3.3.3. LEL Meas. Gas Note: The LEL Measurement Gas option is only available if an LEL sensor is installed. The QRAE 3 has extensive onboard gas libraries for combustible gases that you can use to configure your instrument to automatically apply the appropriate correction factors and produce readings in the units of the desired combustible gas. LEL measurement gases are organized in two lists: • Custom Gases are gases with user-modified parameters. Using ProRAE Studio II, all parameters defining a gas can be modified, including the name, span value(s), correction factor, and default alarm limits. • Gas Library is a library that consists of many of the gases found in RAE Systems’ Technical Note TN-156 (available online at www.raesystems.com). Methane is the default gas. Choose Custom Gases or Gas Library by pressing [MODE], and then press [Y/+] to make your selection. Up to eight custom gases are in the library. Scroll through the choices by pressing [Y/+], and then select the custom gas configuration by pressing [MODE] to highlight it. With “Save” highlighted, press [Y/+] to save your choice. If you choose from the Gas Library, press [Y/+] to scroll through the list, and then press [MODE] to make your selection. With “Save” highlighted, press [Y/+] to save your choice. Note: The Gas Library contains many gases. To rapidly scroll through the list, press and hold [Y/+]. 8.3.3.4. Alarms Use this menu to change high, low, STEL, and TWA alarm limits - the points at which alarms are triggered. It can also change alarm mode (latched or automatic reset) and alarm output methods (combinations of light, buzzer, and vibration alarm indications). 8.3.3.5. Alarm Limits There are four groups of alarm settings that you can adjust for each individual sensor for which a particular alarm type is available. Settings: • High Alarm • Low Alarm • STEL Alarm • TWA Alarm Note: Some alarm settings are not applicable to all sensors. If a setting is irrelevant to a sensor (in some cases STEL or TWA are not relevant to a sensor), then that sensor does not appear in the list for alarm limits.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-26.png)
![QRAE 3 User’s Guide 24 8.3.3.6. Alarm Mode You can program the QRAE 3 so that there are two ways to shut off an alarm: Auto Reset When the alarm condition is no longer present, the alarm stops and resets itself. Latch The latched setting only controls alarms for High Alarm, Low Alarm, STEL Alarm, and TWA alarm. When an alarm is in “latched” mode, the alarm signal remains on even when the alarm condition is no longer present Press [Y/+] to acknowledge and reset alarm signals. 8.3.3.7. Alarm Settings You can enable/disable any combination of light (LEDs), buzzer, and vibration alarms. Settings: • All Enabled • Light • Vibration • Buzzer • Buzzer & Light • Buzzer & Vibration • Vibration & Light • All Disabled 8.3.3.8. Comfort Beep A Comfort Beep is a single beep of the audible alarm at 60-second intervals that reminds the person using the QRAE 3 that it is functioning. It can be turned on or off. 8.3.3.9. Man Down Alarm The Man Down Alarm is a critical and potentially lifesaving safety feature of every QRAE 3. The Man Down Alarm is based on the premise that if the instrument is motionless when it is not supposed to be, something wrong may be happening to its user. If that is the case, the QRAE 3 not only goes into alarm locally on the instrument, but also remotely, over the RAE Systems Dedicated Wireless Network, to notify people in the vicinity, as well as remote safety officers at a command center, that a person is down, so that help can be dispatched quickly. Note: Remote notification requires wireless connection to a network. Whenever the Man Down feature is on, the main screen displays a Man Down icon along the top to indicate it is active:](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-27.png)
![QRAE 3 User’s Guide 25 When the Man Down feature is on and there is no gas alarm, the QRAE 3 senses that it is motionless for the amount of time set in the “Motionless Time” parameter. If the instrument is not moved during that time, then a pre-alarm is activated to alert the user, and shows the “Are You OK?” screen. Pressing [Y/+] clears the alarm and returns the QRAE 3 to its normal operation. Pressing [MODE] sets it into Man Down Alarm (and if wireless connectivity is enabled, a Man Down message is sent in real time to remote observers). If neither key is pressed, then after the countdown, it goes into Man Down Alarm (again sending a message to remote observers if wirelessly enabled). Settings are available for: • Off/On • Motionless Time (time the instrument is motionless before initiating a pre-alarm) • Sensitivity (set to low, medium, or high to compensate for ambient vibration or motion) • Warning Time (countdown, in seconds, from pre-alarm to Man Down alarm) When the Man Down alarm is activated, the buzzer sounds and LEDs flash continuously, and a countdown begins. • If the QRAE 3’s user presses [Y/+] for “Yes” in response to the “Are You OK?” question on the screen before the countdown reaches zero, the Man Down alarm stops and the main reading screen is displayed. • If the person does not press [Y/+] for “Yes” in response to the “Are You OK?” question on the screen before the countdown reaches zero, the Man Down alarm is sounded and LEDs flash continuously. • If the person presses [MODE] during the countdown, answering the “Are You OK?” question with “No,” the Man Down alarm starts. If wireless connectivity is enabled, and the QRAE 3 is connected to a network, a Man Down message is also sent to remote observers. 8.3.4. Datalog The instrument displays a floppy disk icon to indicate that a datalog is being recorded. The instrument stores the measured gas concentration for each sensor, date and time for each measurement, Site ID, User ID, and other parameters. The QRAE 3 memory is sufficient to record three months’ worth of data for four sensors at one-minute intervals. All data are retained (even after the unit is turned off) in non-volatile memory so that they can be downloaded at a later time to a PC. 8.3.4.1. Clear Datalog This operation erases all data stored in the datalog. Note: Once the datalog is cleared, the data cannot be recovered.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-28.png)
![QRAE 3 User’s Guide 26 8.3.4.2. Interval Intervals are shown in seconds. The default value is 60 seconds. The maximum interval is 3600 seconds, and the minimum is 1 second. 8.3.4.3. Sensor Selection You can choose which sensors’ data are included in the datalog. The entire list of installed sensors is shown, and you can individually select whether their data is included. Note: Turning a sensor off in the list does not change or erase its settings. 8.3.4.4. Data Selection Data Selection allows you to select which types of data are stored and made available when you download your datalog to a computer via ProRAE Studio II (version 1.7.0 or higher) software. You can choose any or all of four types of data (you must choose at least one): • Minimum • Average • Maximum • Real Time 8.3.4.5. Datalog Type The instrument offers two options for starting the datalogging process: Auto Automatically collects datalog information every time the instrument is sampling until the datalog memory is full. Manual Datalogging occurs only when you manually initiate it (see below for details). Note: You can only choose one datalog type to be active at a time. About Manual Datalog When the instrument is set to Manual Datalog, you can turn datalogging on and off by repeatedly pressing [MODE] and stepping through the screens from the main display until you reach the screen that says “Start Datalog?” • When you reach the screen that says “Start Datalog?” press [Y/+] to start it. You see “Datalog Started,” confirming that datalogging is now on. • If datalogging is running, it says, “Stop Datalog?” Press [Y/+] to stop datalogging. Otherwise, press [MODE] to advance to the next screen. 8.3.4.6. Action When Full When the internal datalog memory is full, the QRAE 3 can either stop collecting data (Stop when full) or go back to the beginning and overwrite the data from the first entry, second entry, etc. (Wraparound). 8.3.5. Monitor The submenus under “Monitor” control the LCD’s contrast, operation mode, pump speed, and other parameters.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-29.png)
![QRAE 3 User’s Guide 27 8.3.5.1. Date And Time Date Month (MM) and Day (DD) have two digits each, while the year (YYYY) uses four digits. Time The QRAE 3’s time must be set using the 24-hour format, following hours, minutes, and seconds (HH:MM:SS). 8.3.5.2. Display LCD Contrast The display’s contrast can be increased or decreased from its default setting. You may not need to ever change the default setting, but sometimes you can optimize the display to suit extreme temperature and ambient brightness/darkness conditions. Use the [Y/+] key to change the LCD contrast. When you are done, press [MODE] to highlight “OK” and press [Y/+] to save your change. Otherwise, highlight “Cancel” and press [Y/+] to abort changes and revert to the original setting. LCD Flip The display can be configured to flip 180° automatically when the QRAE 3 is turned upside-down. The LCD Flip feature can be set to On or Off. Backlight The display’s backlight can be set to illuminate either automatically, based on ambient light conditions, or manually, or it can be shut off. 8.3.5.3. Pump Speed If the QRAE 3 is equipped with a pump, the pump can operate at two speeds, high and low. Running at low speed is quieter, extends pump lifespan, and conserves a small amount of power. There is almost no difference in sampling accuracy. Note: High speed should be used for exotic sensors and for taking samples via a hose from a long distance. 8.3.5.4. Site ID Choose and enter an 8-digit Site ID to uniquely identify the particular site where the instrument is to be used. The first four digits can be an alphabet letter or number, while the last four digits can only be numbers. This Site ID is included in the datalog report. Note: Advance through the alphabet and numbers (0 through 9) by one with each press of the [Y/+] key. To scroll quickly, hold down the [Y/+] key for as long as you want it to scroll rapidly. Save your changes by highlighting “OK” and pressing [Y/+]. 8.3.5.5. User ID Enter an 8-digit alphanumeric User ID to uniquely identify a user. This User ID is included in the datalog report.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-30.png)
![QRAE 3 User’s Guide 28 Note: Advance through the alphabet and numbers (0 through 9) by one with each press of the [Y/+] key. To scroll quickly, hold down the [Y/+] key for as long as you want it to scroll rapidly. Save your changes by highlighting “OK” and pressing [Y/+]. 8.3.5.6. User Mode Two User Modes are available: Advanced and Basic. The Advanced User Mode allows a greater number of parameters to be changed than Basic User Mode. No password is required to enter the Programming Menu when in Advanced User Mode. 8.3.5.7. Zero At Start If your QRAE 3 has been configured to perform a zero (fresh air) calibration upon startup, called Zero At Start, then the startup routine is interrupted so that you can perform a fresh air calibration. Press [Y/+] to start zero calibration when prompted. If you do not want to perform a zero calibration, press [MODE] to bypass it. If you start a zero calibration and want to abort it, press [MODE], and the calibration stops and the main display is shown. 8.3.6. Wireless When a QRAE 3 is equipped with a wireless modem, its settings are controlled via the menu items under “Wireless.” 8.3.6.1. Radio On/Off Turn the radio on or off via this menu. 1. Choose between “On” and “Off” by pressing [MODE]. 2. Select the highlighted state by pressing [Y/+]. 3. Press [MODE] until Exit is selected.to register the change. • Press [Y/+] to save the change. You see the message “Turning On Radio. Please Wait.” or (if you are turning off the radio) it simply advances to the Wireless menu screen. 8.3.6.2. Roaming The Roaming function provides continuous wireless connectivity between zones enabling users of wireless monitors to travel from one zone/work area to another without losing communication between their monitor and ProRAE Guardian. You can turn Roaming on and off in your monitor, or you can set it via ProRAE Studio II. 1. In the Wireless menu, press [MODE] to scroll down to “Roaming.” 2. Press [Y/+] to select “Roaming.” 3. Press [MODE] to scroll to “On” or “Off.” 4. Press [MODE] to scroll to “Exit.” 5. Press [Y/+] to exit. Note: When Roaming is on, you cannot change the instrument’s PAN ID. In addition, when Roaming is on, the “PAN ID” is not shown in the Wireless menu. To turn “PAN ID” back on: 1. In the Wireless menu, press [N/-] to scroll down to “Roaming.” 2. Press [Y/+] to select “Roaming.”](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-31.png)
![QRAE 3 User’s Guide 29 3. Press [MODE] to scroll from “On” to “Off.” 4. Press [Y/+] to select “Off.” 5. Press [MODE] to select “Exit.” 6. Press [Y/+]. The screen says “Apply Settings” and then goes to the Wireless Menu. Roaming is now off, and the “PAN ID” menu item is now visible and selected. 8.3.6.3. PAN ID The QRAE 3 and any other devices that you want to connect wirelessly must have the same PAN ID. Note: When Roaming is on, “PAN ID” is not shown in the Wireless menu. You must turn off Roaming to make the “PAN ID” menu item visible and accessible. 1. With “PAN ID” selected in the Wireless menu, press [Y/+] to select it. 2. Press [Y/+] to increase the number and [MODE] to advance to the next digit. 3. After moving to the last digit and making changes, press [MODE]. • Press [Y/+] to save the change. • Press [MODE] to undo the change. 8.3.6.4. Channel The QRAE 3 and any other devices that you want to connect wirelessly must be operating on the same channel. 1. Press [Y/+] to increase the number and [MODE] to advance to the next digit. 2. After moving to the last digit and making changes, advance to “OK” and press [MODE] to save the change, or advance to “Cancel” and exit to “Join Network” without saving the change. 8.3.6.5. Join Network You can tell the QRAE 3 to automatically join a network. The PAN ID and Channel are shown for reference (if either is incorrect, you can change it, as described above). Press [Y/+] to join or [MODE] to advance to “Interval” without making a change. Note: If Roaming is turned on, instead of a PAN ID number, you see “- - -”. While it is searching for a network to join, the display shows this message: Joining Network… If it is unsuccessful, you will see this message: Failed To Join Network Check your other settings, as well as those of the network you are trying to join. You can press [Y/+] to retry or [MODE] to exit without joining a network.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-32.png)
![QRAE 3 User’s Guide 30 8.3.6.6. Interval This menu allows you to change the interval between wireless transmissions. The interval can be set to 10, 30, 60, 120, or 240 seconds. Note: The default interval is 30 seconds. 8.3.6.7. Off Network Alarm If you would like the QRAE 3 to notify you when it loses connection with a network, turn this on. 1. Choose between “On” and “Off” by pressing [MODE]. 2. Select the highlighted state by pressing [Y/+]. 3. Press [MODE] until Exit is selected, to register the change. Note: When wireless network connection is lost, the QRAE 3 alarms once per second. 8.3.6.8. Factory Reset Restore all the wireless settings to their original factory defaults. Caution! Once you reset the wireless settings, you cannot retrieve any of the settings deleted by performing this reset. Reset Wireless Settings? • Press [Y/+] to reset the wireless settings. • Press [MODE] to exit without resetting the wireless settings.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-33.png)
![QRAE 3 User’s Guide 31 9. Policy Enforcement The QRAE 3 can be configured to enforce a facility/company’s requirements that calibration and/or bump testing be performed at specified intervals, and to warn the user that calibration/bump testing is required. In addition, it can require calibration or bump testing and not allow normal operation of the instrument unless calibration or bump testing is performed. If Policy Enforcement is enabled and if the instrument has been bump tested and calibrated in compliance with the policy settings, a check-mark icon is included along the top of the QRAE screen: If Policy Enforcement is enabled, then after startup the QRAE 3 displays a screen that informs the user that the instrument requires either a bump test or a calibration. If both are required, then they are shown in sequence. 9.1. Setting Policy Enforcement You must use ProRAE Studio II to make changes to Policy Enforcement settings. Make sure the AC adapter is connected and that a USB cable is connected to the Travel Charger and a computer running ProRAE Studio II. 1. Turn on the QRAE 3. Allow the system to start up and go through its startup routine. 2. Press [MODE] until “Enter Communications Mode?” is displayed. 3. Press [Y/+]. The screen now displays: “Ready To Communicate With Computer.” 4. Start ProRAE Studio II. 5. Select “Administrator.” 6. Input the password (the default is “rae”). 7. Click “OK.” 8. Click “A” (detects instruments automatically). 9. Click on the instrument’s icon when it appears to highlight it. 10. Click “Select.” 11. Click “Setup.” 12. Click “Policy Enforceme nt. ”](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-34.png)
![QRAE 3 User’s Guide 33 15. Exit ProRAE Studio II. 16. Press [MODE] on the QRAE 3 to exit Communica tio n Mode. 9.2. Deactivating Policy Enforcement If the QRAE 3 screen displays the message that it must be bump tested or calibrated, and if the option to bypass bump testing or calibration is not available, you should shut off the instrument and follow the procedure outlined here if you want to change the Policy Enforcement settings: 1. Use a USB cable to connect the QRAE 3 in its Travel Charger to a computer running ProRAE Studio II. 2. Enter Diagnostic Mode on the QRAE 3 (with the instrument turned off, press and hold [Y/+] and [MODE] until it starts up. 3. After startup, enter the password when prompted (default is “0000”) and press [MODE]. 4. Press [MODE] repeatedly until you see the “Enter Communications Mode?” screen. 5. Press [Y/+] to enter Communica tio ns Mode. 6. Start ProRAE Studio II. 7. Select “Administrator.” 8. Input the password (the default is “rae”). 9. Click “OK.” 10. Click “A” (detect instruments automatically). 11. Click on the instrument’s icon when it appears. 12. Click “Select.” 13. Click “Setup.” 14. Click “Policy Enforcement.” The Policy Enforcement pane is shown. 15. Deselect Policy Enforcement features you do not wish to use. 16. Click “Upload all settings to the instrume nt. ” 17. When you see this confirmation. Click “Yes.” Uploading will take a few seconds, and this progress bar is shown:](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-36.png)
![QRAE 3 User’s Guide 34 18. When the upload is done, exit ProRAE Studio II. 19. Press [MODE] on the QRAE 3 to exit Communicatio n Mode. 10. Calibration And Testing 10.1. Manual Alarms Test Under Normal Operation Mode and non-alarm conditions, the buzzer (audible alarm), vibration, visible alarms, and backlight can all be tested anytime by pressing [Y/+]. If any alarm does not respond, check the alarm settings in the Programming Menu to make sure all alarms are enabled (selected setting under Programming/Alarms/Alarm Settings should be “All Enabled”). If any alarms are enabled but not functional, the instrument should not be used. 10.2. Bump Testing And Calibration RAE Systems recommends that a bump test be conducted periodically on the QRAE 3. The purpose of a bump test is to ensure that the instrument’s sensors respond to gas and all the alarms are enabled and functional. • The QRAE 3 multi-gas detector must be calibrated if it does not pass a bump test, or at least once every 180 days, depending on use and sensor exposure to poisons and contaminants. • Calibration intervals and bump test procedures may vary due to national legislation. A bump test can be performed either manually or using the AutoRAE 2 Automatic Test and Calibration System. When a bump test is done manually, the instrument makes a pass/fail decision based on sensor performance, but the user still has the responsibility to make sure all the alarms are enabled and functional. Note: Bump testing and calibration can be performed using an AutoRAE 2 Automatic Test & Calibration System. An AutoRAE 2 bump test takes care of both the sensor and alarm tests. Consult the AutoRAE 2 User’s guide for details.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-37.png)
![QRAE 3 User’s Guide 35 10.2.1. Bump (Functional) Testing The same gas is used for a bump test as for calibration. A constant-flow regulator producing 0.5 to 1 liters per minute should be used, and the calibration adapter must be installed on diffusion models. The instrument must be connected to a cylinder of calibration gas with supplied tubing. Note: Pumped models require a T calibration tube, as illustrated below. 1. Turn on your QRAE 3 by pressing and holding the [MODE] key, and allow the instrument to boot up fully until the main measurement screen with sensor names and readings is shown. Important! Make sure all of the instrument’s sensors have warmed up before performing the bump test. The instrument will take the time to warm up the sensors prior to enabling access to bump test menus. You can tell a sensor has warmed up if you see a reading next to it name on the display. If it has not warmed up, you see three dashes (“--”) next to it. 2. Install the calibration adapter on the QRAE 3 if it is a diffusion model. 3. Turn on the gas to initiate flow. 4. Connect the instrument to the T calibration tube and connect it to the calibration gas. 5. Press Start ([Y/+] key) to start the bump test, or press [MODE] to quit. While the bump test is being performed, the readings for each sensor are shown. Once the bump test completes, pass/fail test results and readings are shown for each sensor. Important! If one or more sensors fails a bump test, be sure to calibrate those sensors. 6. The bump test is now complete. Press [Y/+] to exit and return to the Calibration menu. If all the alarms and all sensors have passed and no sensor is due for a calibration, the instrument is now ready for use. Note: Make sure pressure in the calibration gas cylinder is higher than 100 psi when using a T calibration tube (pumped models only). Diffusion models require calibration cap, but no T calibration tube.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-38.png)
![QRAE 3 User’s Guide 36 10.3. Zero Calibration This operation sets the zero point of the sensor calibration curve for clean air. It should be performed before other calibrations. Note: If you use a zero air cylinder, you must use the QRAE 3 Calibration Adapter (and a T calibration tube if the instrument has a pump). Using a calibration adapter is not necessary for calibration in fresh air. 10.3.1. Zero Calibration This procedure determines zero points of most sensors. The QRAE 3 should be zero-calibrated in clean air with 20.9% oxygen or with a cylinder of clean zero air. At the Calibration menu, select “Fresh Air” by pressing [Y/+] once to enter fresh air calibration. After a timer countdown, the zero calibration is done. The LCD displays the sensor names and tells you whether each calibration passed or failed, followed by the sensor readings. Note: You can abort the calibration at any time during the countdown by pressing [MODE]. 10.3.2. Single-Sensor Zero Calibration Select the sensor and then start the calibration by pressing [Y/+]. You can abort the procedure anytime by pressing [MODE]. 10.4. Span Calibration This procedure determines the second point of the sensor calibration curve for the sensor. Note: When a manual calibration is performed, the readings shown are in the equivalent units of the calibration gas, and not the measurement gas. 10.4.1. QRAE 3 Pumped Model The QRAE 3 pump draws at a flow rate of between 200cc/min and 450cc/min. The instrument must be connected to a cylinder of calibration gas with supplied tubing featuring a T calibratio n tube (P/N M02-3008-000), as illustrated below. Note: A constant-flow regulator with flow rates from 500cc/min to 1000cc/min should be used. Note: Make sure pressure in the calibration gas cylinder is higher than 100 psi when using a T calibration tube.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-39.png)
![QRAE 3 User’s Guide 38 10.4.3 Multi-Sensor Span Calibration This lets you perform a span calibration on multiple sensors simultaneously. It requires using the appropriate span gas and that the concentration labeled on the gas cylinder matches the concentration programmed in the QRAE 3. 1. Start the flow of calibration gas. 2. Attach the calibration adapter and gas to the QRAE 3. 3. Press [Y/+] to begin calibration. A countdown screen is shown. You can abort the calibration at any time during the countdown by pressing [MODE]. If the calibration reaches its conclusion, it shows the sensor names and tells you whether the calibration passed or failed, followed by the sensor readings. 10.4.4. Single-Sensor Span Calibration To perform span calibration of an individual sensor, follow these steps: 1. At the Calibration Menu, select “Single Sensor Span.” 2. Select a sensor from the list. 3. Start the flow of calibration gas. 4. Connect the calibration adapter and connect it to a source of calibration gas. 5. Verify that the displayed calibration value meets the concentration label on the gas cylinder. 6. Press [Y/+] to start calibrating. You can abort the calibration at any time during the countdown by pressing [MODE]. After a timer countdown, the span calibration is done. The LCD will display whether the calibration was successful and the reading for that calibration gas. Note: If the sensor calibration fails, try again. If calibration fails again, turn off the power and then replace the sensor. WARNING: Do not replace sensors in hazardous locations](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-41.png)
![QRAE 3 User’s Guide 39 11. Datalog Transfer, Monitor Configuration, and Firmware Upgrades Via Computer Datalogs can be downloaded from the QRAE 3 to a computer, and firmware updates can be uploaded to the QRAE 3 via the USB port on the Travel Charger. Use the included Mini B USB (5-pin)-to-USB cable to connect the Travel Charger to a computer running ProRAE Studio II (version 1.7.0 or higher). 11.1. Downloading Datalogs And Performing PC-Based Instrument Configuration and Firmware Upgrades The QRAE 3 communicates with a PC running ProRAE Studio II Instrument Configuration and Data Management software to download datalogs, configure the instrument, or upload new firmware. The QRAE 3 must be connected to a PC through the supplied Travel Charger and must be in the PC communications mode. 1. Use the supplied PC Communications Cable (USB to mini-USB cable) to connect the Travel Charger to a PC. 2. Turn on the QRAE 3. Make sure it is running (with the main measurement screen showing). 3. Activate the PC communications mode on the QRAE 3 by pressing [MODE] repeatedly, starting from the main measurement screen until you reach the “Enter Communications Mode?” screen. 4. Press [Y/+]. Measurement and datalogging stop, and the instrument is now ready to communicate with the PC. The display now says “Ready To Communicate With PC Or AutoRAE2.” 5. Start up the ProRAE Studio II software, enter a password, and detect the instrument following the directions provided in the ProRAE Studio II User’s Manual. 6. Follow the instructions in the ProRAE Studio II User’s Manual to download the datalog, configure the instrument settings, or update the QRAE 3’s firmware. 7. When you are done, press [MODE] to exit the PC communications mode on the QRAE 3. After upgrading the QRAE 3's firmware, the instruments will turn off automatically. Mini B USB (5-Pin) to USB cable Travel Charger Mini B USB (5-Pin) port LED Power Indicator](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-42.png)
![QRAE 3 User’s Guide 48 13.2. Changing The Alarm Mode Your choices are Auto Reset and Latched. A latched alarm stays on until you acknowledge the alarm by pressing a key. An auto-reset alarm turns off when the condition that set off the alarm is no longer present (for instance, a high H2S reading that exceeds the preset threshold and triggers an alarm, but then lowers below that threshold, turning the alarm off). 1. Enter the Alarm Mode sub-menu of the Alarms section under the Programming Menu. 2. Select Auto Reset or Latched by pressing [MODE] to select, and [Y/+] to confirm the choice. 3. Press [Y/+] to save your selection.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-51.png)
![QRAE 3 User’s Guide 50 General Alarms Testing Alarms Under normal operation mode and non-alarm conditions, the audible, visible, and vibration alarms can be tested at any time by pressing the [Y/+] key. Message Condition Alarm Indications HIGH Gas exceeds “High Alarm” limit 3 beeps/flashes per second OVR Gas exceeds sensor’s measurement range 3 beeps/flashes per second MAX Gas exceeds electronic circuit’s maximum range 3 beeps/flashes per second LOW Gas exceeds “Low Alarm” limit* 2 beeps/flashes per second TWA Gas exceeds “TWA” limit 1 Beep/flash per second STEL Gas exceeds “STEL” limit 1 Beep/flash per second Crossed pump icon flashes Inlet blocked or pump failure 3 beeps/flashes per second Empty battery icon flashes Low battery 1 flash, 1 beep per minute CAL Calibration failed, or needs calibration 1 beep/flash per second NEG Zero gas reading measures less than number stored in calibration 1 beep/flash per second * For oxygen, “low alarm limit” means a concentration is lower than the low alarm limit.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-53.png)
![QRAE 3 User’s Guide 51 14. Troubleshooting Problem Possible Reasons & Solutions Cannot turn on power after charging the battery Reasons: Defective charging circuit. Defective battery. Solutions: Replace battery or charger. Try charging the battery again. Lost password Solutions: Call Technical Support at +1 408-952-8461 or toll-free at +1 888-723-4800 Buzzer, LED lights, and vibration motor inoperative Reasons: Buzzer and/or other alarms disabled. Bad buzzer. Solutions: Check under “Alarm Settings” in Programming Mode that buzzer and/or other alarms are not turned off. Call authorized service center. Pump failed message. Pump alarm. Reasons: Inlet probe blocked. Direct connection to a gas outlet while the gas value is turned off. External filter sucks in water. External filter too dirty. Water condensed along the inlet probe. Bad pump or pump circuit. Solutions: Remove the blocking objects and then press [Y/+] key to reset the pump alarm. Replace contaminated external filter. Be careful not to allow water condensation inside the unit. Replace the pump. If you need replacement parts, please contact an authorized RAE Systems distributor. 15. Diagnostic Mode In Diagnostic Mode, the QRAE 3 provides raw counts for sensor, battery, and other readings, as well as a list of installed sensors and information about them (expiration date, serial number, etc.). Most of these screens are useful only to service technicians. A few allow access for changing settings. The QRAE 3’s Diagnostic Mode can only be accessed at startup time. In Diagnostic Mode, QRAE 3 displays readings in raw counts instead of units such as parts per million (ppm). 15.1. Entering Diagnostic Mode 1. With the QRAE 3 turned off, press and hold both [MODE] and [Y/+]. 2. When the display turns on and the password screen appears, release the keys. 3. Enter the 4-digit password (the password is the same as the one for the Programming Mode; the default password is 0000). • Step from one position in the four-character string to the other by pressing [MODE]. • Press [Y/+] repeatedly to select a desired number. Numbers increase from 0 to 9. • Once 9 is reached, pressing [Y/+] again “wraps” around back to 0.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-54.png)
![QRAE 3 User’s Guide 52 4. When you are done, press [MODE] followed by [Y/+]. If you input the correct password, you see the “Product Model” screen. 15.2. Exiting Diagnostic Mode 1. Turn off the QRAE 3 by pressing and holding [MODE]. There will be a standard shutoff countdown. 2. When the instrument shuts off, you will be alerted. Release your finger. Note: The next time you start QRAE 3, hold only [MODE], and it will automatically start in Normal Mode. 15.3. Navigating Diagnostic Mode Step through Diagnostic Mode by pressing [MODE]. The first screen you see is information about the product, including the serial number, firmware version, etc. Press [MODE] to advance through the screens: • Instrument model name, serial number, and ID • Instrument Firmware • Sensors Installed • Socket 1 • Socket 2 • Socket 3 • Socket 4 • Socket Raw Count • Zero/Span Count • Location 1 ID and Name • Location 2 ID and Name • Location 3 ID and Name • Location 4 ID and Name • Buzzer Mode • Buzzer Frequency • Pump (High) • Pump (Low) • Battery • RTC (real-time clock) • Lights/Vibrator • Temperature • LCD Contrast • LCD Test • Position Sensor • Run Time • Communication – Enter communication mode with computer (Datalogging And Measurement Will Pause)](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-55.png)
![QRAE 3 User’s Guide 62 Turning the PGM-25XX/D On With the instrument turned off, press and hold the [MODE] key for 3 seconds, and then release. The startup process begins. The instrument performs a set of self-tests, while displaying information about instrument’s settings, configuration, due dates for calibration and bump tests, etc. When the startup completes, the PGM-25XX/D displays its normal measurement screen with instantaneous readings and other information in a fashion similar to what is shown in the illustration below (depending on the sensors installed ). Turning the PGM-25XX/D Off Press and hold [MODE]. A 5-second countdown to shutoff begins. You must hold your finger on the key for the entire shutoff process. Alarm Signals The instrume nt is equipped with audible, visib le, and vibratio n alarms. During its normal operation, the PGM-25XX/D compares gas concentrations to the programmed alarm limits for Low, High, TWA and STEL alarms. If the concentration exceeds any of the preset limits, the loud buzzer, red flashing LED, and vibration alarm are activated immed iate ly to warn of the alarm condition. In addition, the PGM-25XX/D alarms if the battery voltage is low, pump is blocked, etc. When a low-battery alarm occurs, there may be approximately 20 to 30 minutes of operating time remaining. However, it is recommended that you promptly change or charge the battery in a non-hazardous location.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-65.png)
![QRAE 3 User’s Guide 63 Alarms Summary * For oxygen, “low alarm limit” means a concentration is lower than the low alarm limit. Testing Alarms Under normal operation mode and non-alarm conditio ns, the audible, visual, and vibration alarms can be tested at any time by pressing the [Y/+] key. Message Condition Alarm Indications HIGH Gas exceeds “High Alarm” limit 3 beeps/flashes per second OVR Gas exceeds sensor’s measurement range 3 beeps/flashes per second MAX Gas exceeds electronic circuit’s maximum range 3 beeps/flashes per second LOW Gas exceeds “Low Alarm” limit* 2 beeps/flashes per second TWA Gas exceeds “TWA” limit 1 Beep/flash per second STEL Gas exceeds “STEL” limit 1 Beep/flash per second Crossed pump icon flashes Inlet blocked or pump failure 3 beeps/flashes per second Empty battery icon flashes Low battery 1 flash, 1 beep per minute CAL Calibration failed, or needs calibration 1 beep/flash per second NEG Zero gas reading measures less than number stored in calibratio n 1 beep/flash per](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-66.png)
![QRAE 3 User’s Guide 64 Programming Menu Programming Menu is used to change instrument configuration settings can be entered from Normal Mode by pressing and holding [MODE] and [Y/+] together for more than 3 seconds and supplying a password when prompted. Alarm Menus Use these menus to change high, low, STEL, and TWA alarm limits -- the points at which alarms are triggered. It can also change alarm mode (latched or automatic reset) and alarm output methods (combinations of light, buzzer, and vibration alarm indicat io ns ). Changing Alarm Mode Auto Reset and Latched alarm modes are supported. A latched alarm stays in alarm until the user acknowledges the alarm by pressing a key. An auto-reset alarm turns off when the condition that set off the alarm is no longer present. A user can configure the desired alarm mode by supplying a password and entering the Programming Menu / Alarms / Alarm Mode Bump Testing and Calibration RAE Systems recommends that a bump test be performed on the PGM-25XX/D prior to each use. A bump test is defined as a brief exposure of the monitor to the calibration gas to confirm that the sensors respond to gas and the alarms are functional and enabled. The PGM-25XX/D multi-gas detector must be calibrated if it does not pass a bump test, when a new sensor has been installed, or at least once every 180 days, depending on use and sensor exposure to poisons and contaminants. Calibration and bump test intervals are user-configurable to match national, regional, and local regulatio ns. All calibratio n and bump test options are available under Programming Menu/Calibration. Each bump test or calibration option shows a countdown followed by sensor reading and pass/fail results.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-67.png)
![QRAE 3 User’s Guide 67 Troubleshooting Problem Possible Reasons & Solutions Cannot turn on instrument after charging the battery Reason: Defective charging circuit. Defective battery. Solution: Replace battery pack or charger. Try another charger or battery. Lost password Solution: Call Technical Support at +1 408-952-8461 or toll-free at +1 888-723-4800 Buzzer Inoperative Reason: Buzzer disabled. Bad buzzer. Solution: Check that buzzer is not turned off in Programming Menu. Call authorized service center. Pump failed message. Pump alarm. Reasons: Inlet probe blocked. Instrument directly connected to a gas outlet with the gas valve turned off. External filter sucked in water. External filter too dirty. Water condensed along the inlet probe. Bad pump or pump circuit. Solutions: Remove the blocking objects and then press [Y/+] key to reset the pump alarm. Replace contaminated external filter. Be careful not to allow water condensation inside the unit. Replace the pump. The list of replacement parts is available online at www. rae systems.com.](https://usermanual.wiki/RAE-Systems/QRAE3/User-Guide-3228954-Page-70.png)
