Calibration And Bump Test; Zeroing And Span Calibration - Honeywell RAEGuard 3 User Manual

8 Calibration and Bump Test

It is recommended to periodically carry out a gas response check on RAEGuard
3 to ensure correct operation. This may be done in two ways:
A simple Response Check often referred to as a "BUMP TEST" is a test
1.
using calibration gas applied to the sensor via the hole of the Waterproof
Cap or using Calibration Cap
If a BUMP TEST is done via the Waterproof Cap hole it may be
necessary in windy conditions to increase flow rate of the test gas by
further 1 LPM, or, to shelter the waterproof cap from wind.
Oxygen sensor does not need BUMP TEST.
A full gas calibration of the sensor as described in the following section,
2.
using ONLY the Calibration Cap.

8.1 Zeroing and Span calibration

As some calibration gases may be hazardous, ensure that outlets from gassing
Note: Before initial calibration allow the detector to stabilize for 30 minutes after
applying power. For some special gases, the sensor with bias voltage is used, which
should have been running steadily for at least 24-72 hours.
When in zeroing and span calibration mode the current output from detector is
For Oxygen sensor, zeroing calibration has been done at the factory and the user
For all sensors calibration, use a calibration gas of approximately 50% FSD to
For some special gases with strong adsorption, the pipeline from cylinder to
instrument should be kept as short as possible, and the Teflon material should be
To calibrate the detector, use an appropriate span gas cylinder, constant flow
regulator and the RAEGuard 3 Calibration Cap. The flow rates used for calibration
gas are as follows:
accessories exhaust safely.
inhibited (default 2mA) to avoid false alarms.
does not need to recalibrate.
ensure the accuracy and linearity of the instrument.
used for the pipe.
Warning
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RAEGuard 3 User Manual