Automation Components ACI/ACI RH Room Series - Manual (Page 4)

2305 Pleasant View Rd. Middleton Industrial Park Middleton, WI 53562
PH: (608) 831-2585 FAX (608) 831-7407
I0000144.DOC REV 2
Troubleshooting
No reading 1. Check that you have the correct supply voltage at the power terminal blocks.
2. Check wiring configuration and all DIP switch settings are as in Figure #2 and
Figure #3.
3. Verify that the terminal screws are all connected tightly and that all of the wires are
firmly in place.
Erratic readings 1. Verify that all of the wires are terminated properly.
2. Make sure that there is no condensation on the board.
3. Check that the input power is clean. In areas of high RF interference or noise,
shielded cable may be necessary to stabilize signal.
Inaccurate readings 1. If you suspect that the transmitter is not reading within the specified tolerance,
please contact the factory for further assistance.
RH Conversion Formulas
To convert transmitter output signal to %RH.
4-20mA to %RH
Example: 12mA transmitter signal output
(12mA-4mA)/ 0.16 = 50% RH
0-5 VDC to %RH
Example: 2 VDC transmitter signal output
2 VDC/0.05 = 40% RH
0-10 VDC to %RH
Example: 8 VDC transmitter signal output
8 VDC/0.10 = 80% RH