Detcon FP-700 SIL 2 Safety Manual - Manual (Page 5)

within +/- 5% LEL of the 50% LEL applied gas level . If response test is not within acceptable limits, then a Full
Calibration procedure must be performed and the Gas Response Proof Test re-performed.
13.1 FULL CALIBRATION
Tools Required:
Zero Gas Cylinder – Zero Air or N2 (may use local ambient air if it’s confirmed to be methane free)
Span Calibration Gas Cylinder - 50% LEL Span Calibration Gas Cylinder (containing 2.50 % volume
methane /balance Air or N2)
Calibration Kit provided by Detcon
Programming magnet
Full Calibration shall be conducted when required. The procedure for performing the Full Calibration is
in the Calibration section of the FP-700 instruction manual. In all cases the model FP-700 gas detector
should be allowed to warm up for 10 minutes before conducting a Full Calibration.
Warning:
The 4-20mA output from the FP-700 will drop to 2mA during the Full Calibration
Successful completion of the Gas Response Proof Test must be recorded and documented in the SIS
logbook. If the Full Calibration is performed, it should also be documented in the SIS logbook.
14 OUTPUT RESPONSE PROOF TEST
Tools Required:
Span Calibration Gas Cylinder - 50% LEL Span Calibration Gas Cylinder (containing 2.50 % volume
methane /balance Air or N2)
Calibration Kit provided by Detcon
The Output Proof Test is performed as follows:
1. Inhibit alarm response at the control device.
2. Apply test gas (50% LEL methane/Air or N2 ) to the detector. Verify correct 4-20mA output signal at the control
device.
3. Re-activate alarm response at the control device.
15 FAULT/FAILURE ACTION PLAN
In the event that a Full Calibration does not result in acceptable Gas Response Proof test, then the standard Maintenance,
Troubleshooting, and Device Repair and Return Procedures are listed in the FP-700 instruction manual must be followed.
Any failure to successfully complete the Gas Response Proof Test must be recorded and documented in the SIS logbook.
16 PRODUCT REPAIR
The FP-700 is partially field repairable. Follow the FP-700 instruction manual for proper guidance in executing the
allowable field repair/replacement actions. No firmware changes are permitted or authorized. All failures detected by the
transmitter diagnostics or by the Proof Test must be reported.