Xylem WQ pH SENSORS User Manual
Page 6
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IV.
Temperature Sensor
a. Temperature sensor specifications.
Output:
4-19mA
Range:
-50° C to + 50° C
Accuracy:
±0.2° F or ±0.1° C
Operating Voltage:
10-36VDC
Current Draw:
Same as sensor output.
Warm Up Time:
5 seconds minimum
Operating Temperature: -50°C to +100°C
Size of Probe:
3/4" diameter x 4 1/2" long
Weight:
1/2 lb.
b. The sensor is a two-wire sensor using the red wire for power and the
black wire for the output signal. Warning: Always connect the
sensor with the power turned off.
c. The temperature sensor may be stored without any special provisions.
Place the sensor inside a bag to keep the sensor clean and store on a
shelf or hang it on a wall.
d. To check the temperature sensor calibration you will need:
1 thermometer
3 containers of water
1 power supply
1 current meter
Connecting wires as necessary
Connect the sensor to the power supply and current meter in
the following way. Attach the black wire to the positive input of the
current meter. Connect the ground terminal of the power supply to the
ground of the current meter. Attach the red wire to the positive
terminal of the power supply. See Appendix B. Warning: Always
connect the sensor with the power turned off.
See Appendix A for the temperature calibration worksheet.