Change Span 2 Value
For enhanced accuracy, it is possible to perform a second Span calibration in addition to Zero
and Span calibrations. Your instrument first must be set to allow this third calibration. This
requires using Safety Suite Device Configurator (SSDC) software and a PC, as well as a higher
concentration of calibration gas. Note: 3-point calibration is the default for AreaRAE Pro for ppb
resolution or the high range (0 to 5,000 ppm). For other configurations, 2-point calibration is
the default.
Note: You can only disable 3-point calibration capability by using SSDC again.
1. Press [Y/+] to select VOC.
2. Press [N/-] to step through the digits.
3. Press [Y/+] to increase the number from 0 through 9. Once the number 9 is reached,
pressing [Y/+] causes the numbers to “wrap around” to 0 and count up again.
4. Once you have set the desired value, press [MODE] for “Done.” This registers the new
second span value.
5. Press [Y/+] for “Save” and [N/-] for “Undo.”
LEL Calibration Procedure
You must perform a separate zero calibration for the LEL sensor and then perform a span
calibration.
Important! Before calibrating, make sure pump is on its high setting. This is in the “Pump Speed”
submenu under the “Monitor” menu item.
To calibrate the LEL sensor, follow these two procedures:
Zero Sensor Calibration For The LEL Sensor
1. Turn on the AreaRAE Plus/Pro and allow it to warm up for 20 minutes in ambient air.
2. In Programming mode, Select “Calibration” and then select “Single Sensor Zero.”
3. Select “LEL.”
4. Calibrate the LEL sensor’s zero point with ambient air.
5. After zero calibration is complete, press [MODE] to return to the Calibration menu.
“Single Sensor Span” is highlighted.
Span Calibration for the LEL Sensor
1. Press [Y/+] to select “Single Sensor Span.”
2. Press [N/-] until “LEL Sensor” is highlighted.
3. Press [Y/+] to select “LEL Sensor.”
4. Screw one end of a “T” using Teflon tubing to the AreaRAE Plus/Pro filter on the inlet.
(You can use RAE Systems P/N: W01-3003-000).
AreaRAE 62 User Manual
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