Module detector type switch setting is correct and that the detector input is 4mA or open circuit
for a fire loop.
6. Provided that zero adjustment was successful, reconnect the sensor (for oxygen detectors only) or
connector (for fire detectors only).
7. For an oxygen detector, expose the detector to free mobile air. Ensure that the display is showing
GL and the current gas level reading. Allow this reading to stabilise.
For other gas detectors, apply calibration gas to the detector (normally half scale, but must be
greater than 20% of full scale). Ensure that the display is showing GL and the current gas level
reading. Allow enough time for the detector to settle (typically two minutes).
For a fire detector, connect an ammeter into the channel circuit. Ensure that the display is
showing FL and operate a manual call point. If the circuit has no manual call point, put a detector
into alarm with a smoke canister.
8. Press the CAL button on the inside of the Display Module. The display shows the reading that
Vortex believes the detector is sensing.
9. Use the – (HOLD) and + (STEP) buttons to adjust the Reading display to the correct reading:
• For an oxygen detector in free mobile air calibrate to a reading of 20.9% Vol.
• For other gas detectors, this should be the level for the applied calibration gas.
• For other 4-20mA devices this should be the level for the applied condition.
• For a fire detector, this should be the same reading as the ammeter in the circuit.
10. Press ACCEPT/RESET. The display should read the calibration gas concentration (for a gas
detector) or the current in mA (for a fire detector).
If there is an E009 fault, it indicates that the mA output from the detector and the required
reading are too far apart to allow compensation. The detector calibration should be checked.
11. The detector and Quad Channel Input Module are now configured and calibrated correctly.
• For a gas detector (other than oxygen), remove the calibration gas.
• For a fire detector, remove the ammeter and reconnect the fire loop.
12. Press the RUN button on the front of the Display Module to release the Channel Test Mode.
13. Release any Inhibit Conditions by pressing the appropriate ZONE INHIBIT button.
14. If necessary select another channel and repeat this procedure until all channels are calibrated.
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