Specifications

M GD-100 M anual
6109-9000 Rev 3 39
Figure 18. Gas Ampoules for Bump Testing
Step Bump Testing Using Ga s Ampoule s
1
Make sure that both the am poules and the calibration beaker
are clean and dry.
2
Unscrew the beaker wing nut and place the ampoul e so that
it sits in the base of the beaker (see Figure 18).
3
Ti ghten the wing-nut screw onto the ampoule without
breaking it.
4 Remove the enclosure lid of the gas detector.
5
Connect the voltmeter to the channel under test between Pin
4 and Pin 2 (for single-level alarm units), or TP5 and TP 4 (for
dual-alarm units), to monitor sensor response.
6
Place the beaker over the sensor head using the multi sensor
adaptor to fit the sensor, or, if an Exd, IP66 or remote sensor
head version, screw the beaker on the remote sensor head
M42 thread or M35 thread adaptor. It should be as tight
fitting as possible to all ow maximum gas exposure.
7
Tighten the wing-nut screw onto the ampoule until it shatters
allowing the gas to diffus e in the beaker. It should be left in
place for approximately 5 min.
8
The voltage output will increase. This confi rms that the
sensor is responding. A response equivalent to at least 50%
(typical) of the test gas confi rms that the system is in order.