Rockwell Automation 1414-CTQxxxxx_CTPxxxxx_ITQxxxxx_ITPxxxxx_ITQxxxxx Duct Temperature Transmitter - Manual (Page 4)

4 Duct Temperature Transmitter
Publication 1414-IN005B-EN-P - July 2010
3. Calibrate the unit in the field by using precision resistance values equal to the zero and
span of the temperature range.
4. Replace the attached probe with the resistor, then adjust the ZERO and SPAN pots
accordingly to obtain the correct output signal.
5. Repeat the adjustments until both values are correct.
Wiring Digram
4…20 mA loop signal
NEG
SEN
EXC
PW
R
OUT COM
SPAN
ZERO
CONTROLLER
24V DC IN
PT1000 ohm
Temp Sensor
Sinking 4…20 mA signal w/excitation from controller
4…20 mA loop signal
NEG
SEN
EXC
PW
R
OUT COM
SPAN
ZERO
CONTROLLER
IN
PT1000 ohm
Temp Sensor
Power Supply
24V DC
( - ) ( + )
COM
4…20 mA signal w/external 24V DC power supply