Autronica AutoPath HC800, Instructions Manual

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 26

Procedure for System Commissioning Using the 
Aperture

1. Align the AutroPath HC800 system using the 

Basic Alignment procedure. At the completion of 

this alignment, the output signal at the receiver 

may indicate a fault condition as a result of signal 

saturation.  

2.  Attach the aperture to the front of the AutroPath HC800 

transmitter

 module using the captive screws provided.  

For best weather protection, the aperture hole should be 

located at the top of the unit.

3.  Perform a zero calibration. After performing the zero 

calibration, the receiver module should display a normal 

condition (green LED) and a steady 4 mA output.  

NoTe

If the receiver continues to indicate a fault 
condition as a result of signal saturation, rotate 
the aperture 90 degrees and repeat step 3 above.

ReCommeNDAtIoNS FoR uSING tHe HARt FIeLD 

CommuNICAtoR

 WarnInG

The AutroPath HC800 does not use Intrinsically Safe 
circuitry for connection to the HART 475 Communicator. 
Connecting a HART 475 Communicator to the 
AutroPath HC800 may invalidate the Intrinsic Safety 
circuits of the HART 475 Communicator.

• The  HART  communication  device  must  include  the 

AutroPath HC800 device descriptor (DD) software 

menu. The use of HART communication devices 

without the proper DDs may establish generic mode 

HART communication, but will not enable proper 

operation with AutroPath HC800. Refer to the HART 

Appendix for additional information.

• A minimum level of understanding with regard to the 

operation and navigation of the HART communicator 

is required. Please refer to the appropriate HART 

communicator instruction manual for basic operating 

instructions if required. Additional information on the 

use of the HART communicator is provided within the 

HART Appendix in this document.

• For proper HART communication to occur, it is required 

that a 250-500 ohm resistive load be present in the 

AutroPath HC800 analog 4–20 mA signal loop output. 

See “Wiring Procedure” in the “Installation” section.

GAIn LeVeL CHeCK (

optional

)

It is necessary to complete the alignment procedure 

before checking the gain level. HART or Modbus 

communication is required to check the gain.

Procedure

1.  Connect the handheld HART communicator to the 

receiver module’s 4–20 mA circuit.

2.  Turn on the HART communicator and check for 

AutroPath HC800 device recognition. When HART 

communication is established, the AutroPath 

HC800 Online menu will be displayed on the com-

municator display.

3.  From the Online menu, navigate to the Detector 

Setup menu, then select the Sensor Setup menu.  

4.  The following screen will be displayed. Observe 

the level indicated for “Gain.”  

                       Sensor Setup

1)  Processing mode 

xxxx

2)  Interconnect mode 

xxxx

3)  Log interim beam block  Y/N

4)  Gain Mode 

xxxx

5)  Gain 

xx

6)  Tx lamp voltage 

xxxx

7)  Auto voltage during cal 

E/D

8)  Beam block fault time 

xxx

Gas Gain number

5.  Table 8 can be used as a guideline for new instal-

lations to assess the detector gain level with 

proper alignment. 

Distance

Transmitter Type

Short Range

Long Range

5

1 (aperture)

20

5 (aperture)

30

1

2 (aperture)

40

2-5

5 (aperture)

60

5-10

1-2

80

2-5

100

2-5

120

5-10

table 8—Expected Gas Gain Settings for autropath Hc800