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2.8 Configuring your Detector
You can reprogram the function setup using the RS-485 connection or using the Hart
Protocol as follows:
•
Industrial Scientific Host Software : The Industrial Scientific Host Software is for
use on a PC or laptop. Refer to Manual TM777050 for programming instructions. The
Host software enables you to change the functions.
•
Handheld Unit : Refer to Manual 777060 for programming instructions when using
the Handheld Unit. The connection to the Handheld is fast and intrinsically safe. It
enables you to change the functions in situ with no need to remove the detector.
Note : Industrial Scientific can provide a suitable cable (P/N 794079-5) with integral
RS485/USB converter to connect between the Detector and a PC/laptop.
•
Hart Protocol : Refer to Manual TM 777030 for programming
instructions.
These functions enable you to set:
•
Sensitivity
•
Alarm Delay
•
Time Delay for Anti Flare mode
•
Address Setup
•
Mode of Operation
•
Heated Optics Operation
The factory Default settings listed for each function are:
•
Sensitivity – 30
•
Alarm Delay – A
•
Alarm Latch – No
•
Auxiliary Relay – No
•
Automatic BIT – Yes
•
Alarm BIT – No
•
Auxiliary BIT – No
•
EOL – No
•
Heated Optics – Auto
•
Temperature – 20
2.8.1 Sensitivity
The detector offers four (4) sensitivity settings. The settings refer to an n-heptane or
gasoline fire of 1ft² (0.1m²), from low sensitivity of 50 ft (15m) to 215 ft (65m). For other
types of fuel sensitivity, refer to
Table 3.
Table 18: Sensitivity Settings
Sensitivity Setting
Detector Dis tance
feet
Detector Distance
meters
15 50 15
30 (default) 100 30
45 150 45
60 215 65