TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook GD10-P00, Operating Manual

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GD10-P00 and GD10-PE0
INFRARED POINT GAS DETECTOR
OPERATING MANUAL
34 850-811250
Revision 13b
7.4.2 Re-zeroing with HART® communicator
See section 6.2.4.10.
7.5 Fault finding
The internal microprocessor performs continuous self-testing of optical and electronic functions.
If a fatal error should occur in the electronics or optics, the processor will generate a 0mA output
signal, indicating detector failure. The detector should then be checked according to flow chart
on the left. Do not return the instrument to the supplier for repair if this test has not been performed.
If the IR transmission in the optical path is attenuated to 50-70% of its original value, the output
signal will go down to Early Dirty Optics (see section 6.1 for further details).
If the IR transmission is further attenuated, the output signal will go down to Dirty Optics (fault). In
this condition the detector will not detect gas (see section 6.1 for further details).
If the optics are contaminated, wipe them with a clean cloth and mild detergent according to
instructions in section. 7.1. The optics must be cleaned even if they appear not to be contaminated.
A signal output equal to 0 mA can be due to a power supply failure. Check first that voltage
supply at detector terminal is between 18VDC and 32VDC.
Avoid direct light on lens and mirror if testing without the Weather Protection.
Ensure that no gas is present in the measuring chamber when testing.
A temperature fault is output if ambient temperature is outside -85°C/+85°C.