QRAE II User Guide
Page 46
6 Bump Testing & Calibrating The QRAE II
RAE Systems recommends that a bump test be performed on the QRAEII before the
monitor is put into service, and later, prior to each use. A bump test is defined as a brief
exposure of the monitor to the calibration gas and the sensors to show response and
trigger the lowest alarm set point for each sensor.
• The QRAEII 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.
• When using an H
2
S sensor in a QRAE II, RAE Systems recommends using RAE
calibration gas cylinders with a 4 gas mix containing 10 ppm H
2
S, 50 ppm CO, 50% LEL
Methane, and 18% Oxygen.
6.1 Connecting the Calibration Gas To The Monitor
(QRAE II
Pump Model Only)
The QRAE II Pump must be calibrated using a fixed-flow regulator with a flow rate
between 0.5 and 1.0 liters per minute.
1. Attach the hose from the regulator/calibration gas cylinder to the Calibration gas
inlet on the front of the QRAE II Pump.
2. To calibrate, turn the gas flow on.
3. After calibration, turn off the gas and remove the hose from the QRAE II Pump.
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