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C7600A SOLID STATE HUNIDITY SENSOR
5
63-2150—5
Wiring
Disconnect the power supply before beginning wiring to
prevent electrical shock or equipment damage. All wiring
must comply with applicable codes and ordinances.
Follow the wiring information furnished by the controller
manufacturer or refer to Fig. 4 for a typical wiring hookup.
Note and follow polarity markings for hookup.
OPERATION
The C7600A Solid State Humidity Sensor provides a 4 to 20
mA output signal that is inversely proportional to the relative
humidity of the return air.
The sensing element in the C7600A Solid State Humidity
Sensor is a humidity-sensitive polyamide film that changes
capacitance with a change in humidity. This change in
capacitance is converted by a printed circuit board assembly
to an output current between 4 and 20 mA. The output current
is used by an analog or a microprocessor-based controller to
measure and control humidity.
=24 VDC(+)
=8
=7
=6
=5
=A COM
=20 VDC(+)
=4
=3
=2
=1
=A COM
=8
=7
=6
=5
=4
=3
=2
=1
=D COM
=V1
=V2
=GND
4=
3=
2=
1=
GND=
V2=
V1=
4=
3=
2=
1=
A COM=
4=
3=
2=
1=
D COM=
8=
7=
6=
5=
D COM=
DIGITAL
OUTPUTS
DIGITAL
OUTPUTS
ANALOG
OUTPUTS
S7600A
24 VAC
OUT
DIGITAL
INPUTS
ANALOG
INPUTS
ANALOG
INPUTS
24 VAC
INPUT
V2=
V1=
24 VAC
OUT
W7600
+
1
M3128
C7600C
RETURN AIR
HUMIDITY SENSOR
237 OHM, 1 PERCENT, 1/8 WATT
METAL FILM RESISTOR.
1
Fig. 4. Wiring C7600A Solid State Humidity Sensor to W7600.