Onguard FG8800-1700 Addressable Field Node Four Channel 4-20mA Inputs
The FG8800-1700 4-20MA microprocessor based node accommodates four independent gas sensors. The node contains an LED that blinks for power on status. Each channel has its own unique address and can be treated as an individual input for the system. Color bar graphs indicate the gas concentration levels at the control panel. Real time %LFL and loop current measurement are also displayed on the screen. Each channel accommodates three set point locations. The choice to disable any channel is implemented through the program. The node and its associated field wiring are continuously supervised and interrogated through the control panel.
4 mounting hole diameters, .170" (4.32MM).
* For constraint areas, Allestec can remove end tabs allowing node to accommodate a standard 1 gang electrical switch box.
Node maximum depth = .9" (22.86).
Tolerances are +/- .005 (.127).
Node can be rotated on the adapter 180° to accommodate terminal strip position.
Specifications of the Onguard FG8800 System 4-20mA Node
Node operating voltage:
18 - 30 VDC provided to the control panel
4-20mA node current rating @ 24 VDC:
20mA quiescent, 35mA maximum
Display & register resolution @ full scale:
Printed circuit board:
FR4 fiberglass UL rated 94V-0, 2 oz copper, SMOBC, MIL-PRF-55110F
Refer to above drawing
2.8 oz, 80g
Node operating ambient temperature:
0°F to 150°F
-17°C to 65°C
90% humidity non-condensing