Install Instructions

H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B
5 62-0330—01
Fig. 7. Typical wiring diagram for 5-wire temperature/humidity sensor with Vdc output
(used with the Spyder controller).
CHECKOUT
CAUTION
Equipment Damage Hazard.
Can short electric circuitry.
• Never connect 120 Vac to the transducer.
• Connect only DC voltage to a transducer
intended for DC supply.
NOTE: Use laboratory quality meters and gauges for
applications requiring a high degree of
accuracy.
1. Verify that the transducer is mounted in the correct
position.
2. Verify appropriate input signal and voltage supply.
3. Verify appropriate configuration range.
Converting Output Signal to
Percent RH
4 to 20mA Signal
((mA signal) -4) / 0.16 = percent RH
Example: 12mA output signal
(12-4) / 0.16 = 50% RH
0 to 5 Vdc Signal
(VDC signal) / 0.05 = percent RH
Example: 1.25vdc output signal
1.25 / 0.05 = 25% RH
0 to 10 Vdc Signal
(VDC signal) / 0.10 = percent RH
Example: 7.50vdc output signal
7.50 / 0.10 = 75% RH
Table 2. Troubleshooting.
M31268
1
24 VAC 24 VAC COM
EGND SHLD SBUS1 SBUS2 NET-1 NET-2
24 VAC
COM
-
+
24 VAC
2 3 4 5 6 7 8
9
DO-1 DO-2
COM DO-3 DO-4 COM DO-5 DO-6
0 1 2 3 4 5 6
COM DO-7 DO-8 COM
7 8 9 0
11111111112
1
AO-1 COM
AO-2 AO-3 COM D1-1 D1-2 COM
2 3 4 5 6 7 8
D1-3 D1-4 20VDC U1-1
9 0 1 2
22 2222222333
COM
3
3
U1-2
4
3
U1-3
5
3
COM
6
3
U1-4
7
3
U1-5
8
3
COM
9
3
U1-6
0
4
HUMIDITY SENSOR
4-20mA VIN COM VOUT +TEMP
Problem Items to Check
No reading • Verify correct supply voltage at the power terminal blocks.
• Verify correct wiring configuration and DIP switch settings per Figures 2 and 3.
• Verify that terminal screws are connected tightly with all wires firmly in place.
Erratic readings • Verify all wires are terminated properly.
• Ensure that there is no condensation on the board.
• Verify clean input power. In areas of high RF interference or noise, shielded cable can be
necessary to stabilize signal.
Inaccurate
readings
• If you suspect that the transmitter is not reading within the specified tolerance, please contact
the factory for further assistance