Hydro Instruments GA-170 - GA-170 Circuit Board

13
FIGURE 9
Date: October 2005
GAS DETECTOR (GA-170) Scale: Not to scale
CIRCUIT BOARD Dwg. No.: GA170CB
RA+
RA–
TX
RX
GND
VARB
VARA
VGND
SN4
24V
SN3
24V
SN2
24V
SN1
24V
HORN+
HORN–
BAT+
BAT–
L N NO1 CO1 NC1 NO2 CO2 NC2 NO3 CO3 NC3 NO4 CO4 NC4 NO5 CO5 NC5 NO6 CO6 NC6
Transformer
Voltage
Selector
Fuse