Challenge Test - MSA ORION Manual

18
3.3.4

Challenge test

The challenge test challenges the response of the Orion against a known
concentration of gas. This confirms that the instrument calibration is valid. To
perform the challenge test:
a) Use the gas cylinder provided in the Orion kit. Check the gas expiry date.
b) Begin with the Orion turned on and the sample hose removed.
c) Screw the calibration nozzle to the gas inlet port.
d) Connect the regulator to the cylinder.
e) Attach the black calibration hose to the regulator.
f) Connect the calibration hose to the Orion, and fully open the regulator.
Figure 10 Connecting gas for both challenge test and calibration
Connect gas. Don't
hold the hose within
1 cm of the end.
Screw down the
calibration nozzle
D.I. Recommended Practice
FILE: W:\NB\RP HMRU\Orion\Frame Ver 02\Orion.fm
CAUTION
When connecting the calibration hose to the nozzle, don't hold the
hose within 1 cm of the end. The nozzle can damage the internal bore
of the hose.
NOTE
The Orion may go into pump alarm at this point. Acknowledge the
alarm by pressing Change/Reset and continue.
Four-Head Gas Detector: MSA Orion
Version 02 Issued February 2011
© Copyright State of NSW (Fire and Rescue NSW) 2011
Fully
open the
regulator
Expiry date is on
the white section
on the rear of
the label.
Gas
specifications
Cylinder Id
chip