Det-Tronics PIRECL Infrared Hydrocarbon Gas Detector PointWatch Eclipse SAFETY MANUAL User Manual
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rESPoNSE ProoF TEST
Tools Required: Compressed Calibration Gas Kit
provided by Det-Tronics
This proof test, commonly referred to as a “gas
bump test”, requires application of high accuracy
compressed calibration gas to the detector while in
NORMAL operational mode and inspecting the signal
output level to ensure that the signal output is accurately
indicative of the applied test gas concentration.
WARNING
Any external alarm equipment, systems or
signaling devices that could be automatically
initiated by performing this test must be disabled
or bypassed before performing this test!
NOTE
If proof testing a PIRECL model without the
optional relay outputs, disregard those parts of
the proof test sequence.
response Proof Test Sequence
1. Inhibit alarm and fault response at the control
device.
2. Apply test gas to the PIRECL. The test gas
concentration should be sufficient to trip both the
Low and High alarm relay outputs.
3. Verify correct change of state at the control device
for both the alarm relay outputs and the 4-20 mA
output. Criteria for the 4-20 mA inspection pass of
a gas detector is a response signal within ±3% of
applied gas concentration (generally, a 50% LFL
test concentration is applied).
4. Remove the test gas and ensure that the unit returns
to normal operation.
5. Relay output only: induce a fault to the PIRECL.
Suggested fault induction methods are listed below:
– Remove the weather baffle, then block the beam.
– Remove input power to the PIRECL.
6. Relay output only: verify correct change of state at
the control device for the fault relay output.
7. Relay output only: correct the fault condition and
ensure that the unit returns to normal operation.
8. Re-activate the alarm and fault response at the
control device.
If the response test is not within acceptable limits, a
Full Calibration procedure must be performed and
Response Proof Test re-performed.
Full Calibration
Tools Required: Compressed Calibration Gas Kit
provided by Det-Tronics
Magnet or HART Field Communicator
Full Calibration shall be conducted when required as
documented in the Calibration section of the PIRECL
instruction manual. It is permissible to conduct the
Full Calibration using either the onboard magnetic
calibration switch or using an approved HART
handheld field communicator. In all cases the PIRECL
should be allowed to warm up for one hour minimum
before conducting calibration.
NOTE
The last seven (7) Full Calibration procedures are
logged with a time stamp (operating hour units) in
the PIRECL onboard memory.
Successful completion of the Response Proof Test
must be recorded and documented in the SIS logbook.
WARNING
Any external alarm equipment, systems or
signaling devices that were disabled must be
re-activated at the conclusion of proof testing
activities.
NOTE
The use of the Full Calibration test shall be limited
to maintenance and proof test activities.
FAULT/FAiLUrE ACTioN PLAN
In the event that a Full Calibration does not result in
acceptable Response Proof test, then the standard
Maintenance, Troubleshooting, and Device Repair and
Return procedures as listed in the PIRECL instruction
manual must be followed. Any failure to successfully
complete the Response Proof Test must be recorded
and documented in the SIS logbook.