BAPI AD592 Guide

9557_ins_592_Room
AD592/592-10K Room Sensors
Sensor Termination and Troubleshooting
BuildingAutomation Products, Inc., 750 North RoyalAvenue, Gays Mills, WI 54631 USA
Tel:[phone]•Fax[phone]•E-mail:[email protected]•Web:www.bapihvac.com
Specifications subject to change without notice.
3/14/0
5
rev.
Termination
Therm Reading_______
Theactualtemperaturereading
according to a thermometer that is
certifiedtraceableto recognized
standardsby theNational Instituteof
StandardsandTechnology(NIST).
Sensor Reading ______
Thetemperaturereadingaccordingto
theAD592sensor, using theoutput
ineither mA ormV and converting
theoutput to aFahrenheit tempera-
ture.
Offset_______
Thedifferencebetween the
ThermometerReadingand the
SensorReading
To correct the Sensor Reading, simply add the offset value to the sensor reading so that it equals the thermometer
reading.
e.g. ThermReading 74.6 SensorReading 73.0 Offset +1.6
Correction: Add (+1.6) °F to the sensor for an accurate reading: 73 + 1.6 = 74.6°F
e.g. ThermReading 75.4 SensorReading 77.2 Offset -1.8
Correction: Add (-1.6) °F to the sensor for an accurate reading: 77.2 + (-1.8) = 75.4°F
All BA592 sensors will have the following information provided on a label:
BA/592-10K (3 Wire) sensors
1. All BA/592-10K (3 wire) sensors have a 10K
0.1% resistor built in.
2. Connect the Ground (terminal 3) wire first.
3. Connect the Sensor Output wire second.
4. Connect the 5 to 30 VDC wire last.
BA/592 (2 Wire) sensors
1. Install a 10K 0.1% resistor between the sensor
Output (terminal 2) and Ground (GND).
2. Make sure that the resistor is connected
between the analog input (A.I.) point and
Ground.
3. Connect the sensor Output to theA.I. point.
4. Connect the 5 to 30 VDC wire last.
Offsetting
R2
R1
SENS
1
2
3
+5 to +30 VDC [To Power of Controller or Supply]
Sensor output (1mV/°K) [To Analog Input of Controller]
GND(Common) [To GND(Common) of Controller]
+5 to +30 VDC [To Power of Controller or Supply]
Sensor output (1mV/°K) [To Analog Input of Controller]
10K 0.1%
GND(Common) [To GND(Common) of Controller]
R2
R1
SENS
1
2
3
BAPI recommends using twisted pair of at least 22AWG and sealant filled connectors for all wire connections. Larger
gauge wire may be required for long runs. All wiring must comply with the National Electric Code (NEC) and local codes.
Do NOT run this device’s wiring in the same conduit asAC power wiring of NEC class1 or NEC class 2, NEC class 3 or with
wiring used to supply highly inductive loads such as motors, contactors and relays.
BAPI’s tests show that fluctuating and inaccurate signal levels are possible when AC power wiring is present in the
same conduit as the signal lines. If you are experiencing any of these difficulties, please contact your BAPI representative.
BAPI does not recommend wiring the sensor with
power applied as accidental arcing may damage
the product and will void the warranty

AD592/592-10K Room Sensors
9557_ins_592_Room
Sensor Termination and Troubleshooting
BuildingAutomation Products, Inc., 750 North RoyalAvenue, Gays Mills, WI 54631 USA
Tel:[phone]• Fax[phone] • E-mail:[email protected] • Web:www.bapihvac.com
Specifications subject to change without notice.
rev. 3/14/0
5
Troubleshooting
Problems:
Temperature sensor in front end software is
readinghigh
Temperature sensor in front end software is
reading low
Possible Solutions:
- Confirm the input is set up correctly in the front
end software
- Check wiring for proper termination
- Verify the “Sensor” output is correct from Pin 2 to
Pin 3. Refer to table below for proper reading
- Determine if the semiconductor appears physi-
cally shorted
- Check wiring for proper termination
- Verify the “Sensor” output is correct from Pin 2 to
Pin 3. Refer to table below for proper reading