Line of Sight Infrared Hydrocarbon Gas Detector AutroPath HC800 , 116-P-HC800/IGB, Rev. A, 2016-03-03
P/N 95-8744, v4.2 , rev. 3/16
Autronica Fire and Security AS
Page 28
CALIBRAtIoN INItIAtIoN
Calibration may be initiated by any of the following
means:
• The onboard magnetic calibration switch
• Digital communication via HART (see HART
appendix) or Modbus communication (consult factory
for details)
• Remote calibration line.
Upon initiation, the AutroPath HC800 automatically
performs the zero calibration adjustment, and then
signals with a green LED when this operation is
complete.
Calibration Using Magnetic Switch
The AutroPath HC800 receiver provides an onboard
magnetic calibration/reset switch for non-intrusive
calibration capability. The magnetic switch is actuated
by holding a calibration magnet at the specified
location on the device bulkhead. See Figure 2 for
switch location. An onboard multi-color LED provides
status indication during calibration.
To initiate calibration, hold the calibration magnet
against the side of the receiver at the location shown
in Figure 2. Apply the magnet for 3 to 30 seconds and
release while the LEDs are flashing yellow at 5 Hz.
Calibration Using Calibration Line Terminal
The calibration / reset function can be accomplished
remotely by installing a switch between the CAL and 0V
COM terminals of the AutroPath HC800 receiver.
To initiate calibration, short the CAL and OV COM
terminals for 3 to 30 seconds and release while LEDs
are flashing yellow at 5 Hz.
CALIBRAtIoN SequeNCe
1. Initiate calibration using one of the methods listed
above:
A. The LEDs continue to flash yellow at 5 Hz.
B. The current output decreases to 1 mA, 2.2 mA,
or as configured by the user.
2. When zero calibration is complete:
A. The onboard LEDs change from flashing yellow
to steady green.
B. Calibration is complete and the current output
returns to 4 mA.
NoTe
Calibration will time out if unsuccessful after 10
minutes.
NoTe
To abort an in-process calibration, repeat the
calibration initiation sequence (e.g., hold the
magnet for three seconds or more and release).
The device will revert to its previous calibration
setting.
