MultiRAE User’s Guide59Important! If one or more sensors fails a bump test, be sure to calibrate those sensors.7. The bump test is now complete. Press Exit to return to the main measurement screen.8. Now perform a manual alarms test, as described in section 10.1.If all the alarms and all sensors have passed and no sensor is due for a calibration, the instrument is nowready for use.Note: When a manual bump test is performed, the readings shown are in the equivalent units of thecalibration gas, and not the measurement gas (if different).10.2.4 Testing The Gamma Radiation SensorThe gamma radiation sensor does not require user calibration. You can check it by placing a check-sourceon the rear of the MultiRAE equipped with a gamma sensor to check the readings. A raised dot on therubber boot marks where the sensor is located inside the instrument.GammaSensorLocation
