13
Voltage inputs
6 Installation
Instruction book, IQAN- XT2
Connecting a 2 wire temperature sensor to voltage in
When you connect a PTC (positive temperature coefficient) temperature sensor you
may need to use a pull up resistor on the input signal. Please check the technical data
for your specific temperature sensor.
EXAMPLE
Connect the negative terminal of the temperature sensor to -VREF, position 13, and
the signal to VIN-A, position 21. The pull up resistor will be connected between
VIN-A, position 21 and +VREF, position 12.
Connecting -VREF and temperature sensor signal VIN-A.
The pull up resistor value for a R
25
=2000
Ω
, PTC sensor is 4.7 K
Ω
To Next Page
Loading...