Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone:
1-888-967-5224 |
Website:
workaci.com
Page 7
Version 6.0
I0000546
TROUBLESHOOTING
TEMPERATURE (Optional) PROBLEM
Sensor reading is incorrect
Sensor reads infinity/very high resistance
Sensor reads low resistance
Erratic readings
SOLUTION(S)
•
Verify sensor wiring to controller is not damaged and has continuity
•
Verify sensor or wires are not shorted together
•
Verify controller is setup for correct sensor curve
•
Disconnect sensor wires, and take a resistance (ohm) reading with a
multimeter
•
Compare the resistance reading to the Temperature Vs Resistance
Curves online:
http://www.workaci.com/content/thermistor-curves-0
•
Verify proper mounting location to confirm no external factors
•
Sensor or wires are open
•
Sensor or wires are shorted together
•
Bad wire connections
HUMIDITY READING PROBLEM
No Reading
Erratic readings
Inaccurate readings
SOLUTION(S)
•
Check that you have the correct supply voltage at the power terminal blocks.
•
Check that wiring configurations and all DIP switch settings are as in
FIGURE 5
and
7
.
•
Verify that the terminal screws are all connected tightly and that all
of the wires are firmly in place.
•
Verify that all of the wires are terminated properly.
•
Make sure that there is no condensation on the board.
•
Check that the input power is clean. In areas of high RF interference
or noise, shielded cable may be necessary to stabilize signal.
•
Verify proper mounting location to confirm no external factors (see
mounting locations above).
•
Check the output (voltage or current) against a highly accurate
recently calibrated secondary reference. Measue RH at the location of
the sensor using the secondary reference, then calculate the RH
percentage using the
RH CONVERSION FORMULAS
(p. 5). Compare
the calculated output to reference.
•
If the sensor is brand new, leave the sensor powered for at least 30
minutes to stabilize.
•
If you suspect that the transmitter is not reading within the specified
tolerance, please contact ACI for further assistance.