7 Signal outputs
7.1 Detector status flags
In the table below are the status flags for the PGxx11. Not all status flags below will have any
impact on the 0-20 mA Safety output. All statuses will be available through HART or the
independent MODBUS digital output:
● All FAULT status flags will lead to the 0-20 mA output going into FAULT mode.
● WARNING statuses means that the detector is still inside specification, but the user or
vendor might be interested in this information. Most WARNING flags are optional if they
should have any impact on the 0-20 mA output. For example EARLY CLEAN OPTICS is
very useful for planning Maintenance.
● SERVICE flags means the detector is in service mode and might not measure gas.
Should be the status before the detector has been through
Manufacturing. Should not happen in the field. Please send
the detector back to the vendor for examination.
Transmission less than 70%.
Detector cannot measure gas, probably due to dirt or
something else blocking the optics. Perform service by
removing weather protection and cleaning optics. Weather
protection should be inspected to verify containing no objects
blocking the optical path.
The 4-20 mA analogue Safety port of the detector is outside
specification.This might be due to calibration of analogue
channel is wrong and might need correction. This can only
be done by the vendor.
Please contact vendor and supply the #err code.
Transmission less than 55%. Probably due to dirt on optics.
Detector still works fine and detects gas within accuracy, but
it should be planned to clean the lens and mirror.
There is detected noise in internal signals higher than
expected that might indicate that there might be an issue
later
Temperature detected to be above the certified temperature
range of the gas detector. Detector is measuring gas, but
cannot guarantee accuracy and risk of the detector going
into fault. Keeping the detector at too high temperature can
reduce the life-time of the detector.
Temperature detected to be below certified temperature
range of the gas detector. Detector is measuring gas, but
Document 022-80036-OM Revision R03 Page 33 of 48
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