User's Manual
Table Of Contents
- 1. Standard Contents
- 2. General Information
- 3. User Interface
- 4. Wireless Control And Submenus
- 5. Battery
- 6. Turning The QRAE 3 On And Off
- 7. Modes Of Operation
- 8. Programming
- 8.
- 8.3.2.1. Multi Bump
- 8.3.2.2. Multi Zero
- 8.3.2.3. Multi Span
- 8.3.2.4. Single Bump
- 8.3.2.5. Single Zero
- 8.3.2.6. Single Span
- 8.3.2.7. Set LEL Cal. Gas
- 8.3.2.8. Set Span Value
- 8.3.3. Measurement
- 8.3.4. Datalog
- This operation erases all data stored in the datalog.
- Note: Once the datalog is cleared, the data cannot be recovered.
- 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
- 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).
- 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.
- Date Month (MM) and Day (DD) have two digits each, while the year (YYYY) uses four digits.
- 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.
- 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 spee...
- 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...
- 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/+].
- Enter an 8-digit alphanumeric User ID to uniquely identify a user. This User 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/+].
- 9. Policy Enforcement
- 10. Calibration And Testing
- 10.1. Manual Alarms Test
- 10.2. Bump Testing And Calibration
- 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
- 10.3.2. Single-Sensor Zero Calibration
- 10.4. Span Calibration
- 11. Datalog Transfer, Monitor Configuration, and Firmware Upgrades Via Computer
- 12. Maintenance
- 13. Alarms Overview
- In addition, the QRAE 3 alarms if one of the following conditions occurs: battery voltage low, pump blocked, etc.
- When the low battery alarm occurs, there may be approximately 10 minutes of operating time remaining. In this case, it is recommended that you promptly change or charge the battery in a non-hazardous location.
- Testing Alarms
- 14. Troubleshooting
- 15. Diagnostic Mode
- 16. Specifications
- 17. Controlled Part of the Manual for PGM-25XX/D
- Caution:
- Refer to RAE Systems Technical Note TN-114 for LEL sensor cross-sensitivities.
- Refer to RAE Systems Technical Note TN-144 for LEL sensor poisoning. Turning the PGM-25XX/D On
- Turning the PGM-25XX/D Off
- Alarm Signals
- The instrument is equipped with audible, visible, and vibration 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 ...
- 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.
- Testing Alarms
- Turning the PGM-25XX/D Off
- Programming Menu
- Zero Calibration
- Battery Replacement
- 18. Technical Support
- 19. RAE Systems Contacts
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.