Detcon FP-524D-HRT User Manual
Page 15
Model FP-524D-HRT
FP-524D-HRT Instruction Manual
Rev. 0.1
Page 11 of 48
significant reading inaccuracies.
a) Attach the calibration adapter to the threaded sensor housing. Apply the test gas at a controlled flow rate
of 200 - 500cc/min (200cc/min is the recommended flow). Allow 1-2 minutes for the reading to stabilize.
Observe that during the 1-2 minutes the display increases to a level near that of the applied calibration gas
value.
b) Remove test gas and observe that the display decreases to “0”.
Initial operational tests are complete. Detcon combustible gas sensors are factory calibrated prior to shipment,
and should not require significant adjustment on start up.
However, it is recommended that a complete
calibration test and adjustment be performed 16 to 24 hours after power-up.
Refer to span calibration
instructions in Section 3.4.