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 7
HeAteR CoNtRoL
The AutroPath HC800 optics in both transmitter
and receiver are heated to provide moisture and
ice resistance. These heaters are microprocessor
controlled and can be configured to operate in the
following modes:
– Always On
– Always Off
– Smart Mode (default)
1) Heaters maintain a user programmable temperature
set point (default = 50°C).
2) Heaters increase to full power when signal strength
is degraded due to moisture or condensation on the
window, or any obscuration faults are active.
3) Heaters shut off when the input voltage drops below
a user defined level (default = 18.5 Vdc).
4) Heater power usage can be limited from 0-100%
(default uses up to 100% power if needed). See
Specifications section for power consumption
details.
Table 6 indicates the typical window glass temperature
rise for various heater setting and ambient temperature
combinations.
NoTe
Higher heater settings reduce or eliminate
moisture buildup on the window, thereby
providing optimum detector performance.
AutroPath HC800 Window
Temperature Rise (C)
AMBIENT TEMPERATURE
-55°C
-40°C
0°C
25°C
30%
Heater
Setting
Receiver
5.1
5.3
4.5
3.0
Transmitter
4.2
4.1
4.2
3.0
50%
Heater
Setting
Receiver
7.2
6.8
7.0
5.0
Transmitter
5.3
5.2
5.3
3.6
70%
Heater
Setting
Receiver
9.8
9.1
7.5
7.1
Transmitter
7.8
6.6
5.1
3.8
100%
Heater
Setting
Receiver
15.8
14.9
8.6
7.3
Transmitter
13.3
10.6
5.9
4.5
table 5—typical autropath Hc800 Window temperature Rise (Degrees c)
for Various Heater Settings and ambient temperatures
table 4—autropath Hc800 Receiver Status conditions
Status
4–20 mA Output
Relays
LED
AutroPath
HC800 De-
fault
Advanced
User
Defined
Fault Relay
Alarm Relay
Warm up
1.0
1.0
Detection
Disabled
De-energized
Disabled
Yellow - Solid
Normal
4.0 to 20.5
4.0 to 20.5
4.0 to 20.5
Energized
Enabled
Green - Solid = Normal
Red - Flashing = Low Alarm
Red - Solid = High Alarm
Zero
Calibration
1.0
2.2
Configuration
Energized
Disabled
Yellow - Flashing @ 5 Hz
Note: When the Communication Link is used, the transmitter LED operation matches receiver LED operation, including alarm status.
