Autronica AutoPath HC800, Instructions Manual

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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 6
Warm-up
Warm-up mode is entered upon application of 24 Vdc
operating power. During warm-up, the 0-20 mA current
loop output will indicate warm-up, the indicating LED
is yellow, and the alarm outputs are disabled. The
warm-up time typically lasts from 15 to 150 seconds,
depending upon alignment accuracy.
Normal
After warm-up mode is completed, the device
automatically enters the Normal mode, and all analog
and alarm outputs are enabled. The AutroPath HC800
modules must be properly aligned before normal
operation is attained. See “Installation” section for
details.
Calibrate
After alignment is completed, zero calibration is
required. Span calibration of the AutroPath HC800 is
performed at the factory; however, the user has the
option to verify proper calibration if necessary. It is
recommended that the zero calibration procedure be
performed annually. Refer to the “Calibration” section
in this manual for details.
4-20 mA Current Loop output
The AutroPath HC800 provides a linear current loop
output that is proportional to the detected gas level.
Fault and calibration status are also indicated by this
output.
The full-scale output corresponding to 5 LFL-meters
is 20 mA. HART and Modbus interfaces also have the
ability to calibrate (trim) the 4 mA and 20 mA levels.
The AutroPath HC800 is equipped with output
monitoring circuitry for the current loop and will indicate
a fault when the output mA level does not match the
output set point of the device. This monitoring (disabled
by default) will indicate a fault if the current loop is not
terminated correctly. The loop monitoring feature can
be enabled via HART or Modbus communication.
Figure 3— identification of transmitter and Receiver Modules
TRANSMITTER RECEIVER
A2647
Default Configurable Options
Gas Type Methane Methane, Propane, Butane
Low Alarm
Threshold
(LFL-M)
1
0.5 to 4.5
(10% to 90%)
High Alarm
Threshold
(LFL-M)
3
0.5 to 4.5
(10% to 90%)
High & Low
Alarm Relays
(Optional)
Non-Latching,
De-Energized
Latching/Non-Latching,
Energized/De-Energized
Beam Block
Delay
60 Seconds 60–3600 Seconds
Fault Mode AutroPath HC800
AutroPath HC800, Advanced,
User Defined
Heater Mode* Smart Mode
Smart Mode, Always On,
Always Off
*See "Heater Control" section for details.
NOTE: The system must be configured for less than 60% of the full
scale measuring range, with consideration to the accepted gas
cloud size and concentration.
table 3—Factory Default Settings