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 25
NoTe
The AutroPath HC800 transmitter lamp output
intensity is automatically optimized during the
zero calibration process if the communication
link wires are attached between transmitter and
receiver. If no communication link is installed,
the transmitter lamp output can be adjusted via
Modbus or HART connection to the transmitter.
This adjustment is rarely needed. (See
“Transmitter Lamp Voltage” section for more
information.)
21. Proper operation should be confirmed by bypass-
ing all system alarms, then placing an optical
test film (sold separately) into the light beam and
checking for the appropriate 4–20 mA output level
or relay actuation. The AutroPath HC800 test film
packet consists of five separate test films. Table
7 shows the response of the different AutroPath
HC800 gas settings to each of the five test films.
Alarm conditions, if present, should clear when the
test film is removed from the beam.
22. Confirm proper operation by completely blocking
the light beam with a solid object such as a piece
of cardboard until a beam block fault is signaled by
the appropriate 4–20 mA output level or relay action
(default delay is 60 seconds). The fault should clear
when the blocking device is removed from the beam.
23. When Basic Alignment and Zero Calibration have
been successfully completed, a green LED should
be displayed on the receiver module and the ana-
log signal output level should be 4.0 milliamperes.
APeRtuRe kIt FoR SHoRt RANGe APPLICAtIoNS
The Short Range Aperture Kit enables successful
application of the AutroPath HC800 gas detector at
short separation distances (5–15 meters for the short
range model and 30–40 meters for the long range
model). The aperture is made of aluminum and is
included with the AutroPath HC800.
table 7—typical System Response
*
in lFl-M (% Full Scale)
using Gas test Films
Test Film
Methane
Butane
Propane
1
0.6
(12%)
1.1
(22%)
1.3
(26%)
2
1.5
(29%)
2.3
(46%)
2.6
(52%)
3
2.5
(50%)
3.6
(72%)
3.9
(78%)
4
3.7
(74%)
4.9
(98%)
5.4
(108%)
5**
5.0
(100%)
6.0
(120%)
6.0
(120%)
*Accuracy = ±0.2 LFL-M or ±15% LFL-M from typical system response,
whichever is greater.
**A HART handheld device is needed to read over-range values.
POSITION A = ORIGINAL ALIGNMENT
POSITION B = CROSS HAIR POSITION AFTER ROTATING SCOPE 180°
POSITION C = MIDWAY BETWEEN POSITION A AND B
STEP 1: CENTER CROSS HAIRS ON TARGET USING
ADJUSTMENT BOLTS ON MOUNTING PLATE
(POSITION A).
STEP 2: ROTATE SCOPE 180°. ALIGNMENT
ERROR CAUSES CROSS HAIRS TO
MOVE TO POSITION B.
STEP 3: ADJUST ALIGNMENT SCREWS ON SCOPE
TO PLACE CROSS HAIRS AT POSITION C.
STEP 4: ROTATE SCOPE 180° TO ORIGINAL POSITION.
STEP 5: REPEAT STEPS 1 TO 4 UNTIL THE UNIT IS
CORRECTLY ALIGNED.
A2314
Figure 25—lS2000 alignment using the telescope alignment tool
