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spanner clockwise to secure the probe on the Gas Check. Tighten the nut by hand only, but do
ensure that the metal part of the capillary tube (2) under the plastic sheath is not loose – else a
noisy detected signal will result.
6
If you have fitted the short probe to the Gas Check, push the nozzle onto the Gas Check if
required (refer to Section 4.4.1).
1
Nozzle
5
Probe/nozzle fitting
2
Short probe
6
Gas Check
3
Nut
7
Long probe
4
Probe insert
Figure 5 – Change the probe
4.5 Switch on the Gas Check
Press I/O key and wait for Gas Check to bleep & flash, the LCD to light up and show
Ion Science Ltd
Cambridge
England
Then show
Gascheck 5000is
SW Version 1.49
Text Version 1.00
Then show
Zeroing Detector
After a short while the LCD display will then revert to the display format previously set up for the
leak rate, which can be either the bar graph or the digital display, the latter in normal or large
numeric display format.
When not detecting leaking gas, Gas Check still flashes and bleeps periodically to indicate that it is
ON. Gas Check remembers the settings on instrument power off so that the operator rarely if ever
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