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MAN0530 Issue 10 - 11/09
2104M0506
APPENDIX A - HANDHELD INTERROGATOR
self test
This starts the system self test process.
The following message is displayed:
This message is displayed during the self test process after pressing Enter.
This message is displayed for three seconds at the end of a successful self test process.
alignment
This starts the alignment process.
The following message is displayed:
This message displays the system output and reference signal values.
where:
Important Notes:
1)
The overall objective of alignment is to maximise the siG level. Maximised siG corresponds
to optimal alignment.
2)
The Instrument Assisted Alignment (IAA) system only allows Excel to be initialised if the
siG level is greater than or equal to the tGt level when enter is pressed.
3)
The smallest tGt signal level that is initially set will be equivalent to 70% (0.700) of the
signal expected for the installation's path length.
4)
The tGt level will increase gradually if the current siG level is larger than the tGt level.
The tGt signal level only ever increases. If the current siG level falls below the tGt
level, tGt will remain at its previous highest value. In order to initialise the gas detector
the siG level must be brought back above the tGt level.
5)
If the siG level is less than 50% of the expected level, the bar graphs are not displayed.
Instead both siG and tGt levels are displayed as numbers.
Press Enter to
Perform checks
Processing Data
Please Wait
Checks Passed
Press Enter to
SIG:
MAX:
A bar graph representing the current signal magnitude - siG:
A bar graph representing the target signal - tGt:
Align Unit
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