Servomex 07931001B, Operator'S Manual

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07931001B revision 6 © Servomex Group Limited. 2020
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The test result can be read back on its own Modbus register. The Modbus
map in section 12.1.14 shows which register to use and what the different
register values mean.
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Look at the result in the calibration history. On completion of auto val, a cal
history entry is created. This contains the pass/fail status together with other
data relevant to validation
Power Interruptions During Auto Validation
If there is a power interruption during auto validation, then a maintenance level fault
will be logged when the analyzer is next powered on. It can be seen in the status log
as shown below:
This is a safety feature that is similar to the check at the end of auto val that the cell
has been purged correctly. If the power is interrupted at a random time during auto
validation, it may be at a point when the cell contains span-gas. When the analyzer
repowers, the cell may still contain the span-gas. This is an unsafe condition as the
analyzer will be producing an incorrect measurement with no indication to the user
that anything is wrong. So this maintenance flag is raised to indicate that the
measurement may not be correct.
To clear the maintenance flag, run a complete manual or auto validation cycle and it
will be automatically cleared.