Connect with us

Ambient Temperature Sensor (Thermistor)

Discussion in 'Sensors and Actuators' started by Frank Cee, Jun 21, 2017.

Scroll to continue with content
  1. Frank Cee

    Frank Cee

    2
    0
    Jun 21, 2017
    I'm pretty much an noob, but I was wondering if it's feasible to add a low resistance variable resistor to a simple thermistor circuit to adjust (calibrate) the existing sensor that has no calibration? What would be the resistor value I should look for? This would operate in the approximate temperature range -15C to 50C. Current wiring is simple two-wire Signal/ground circuit. Would I wire the variable resister in-line?

    Thank You,
    Frank
     
  2. davenn

    davenn Moderator

    13,946
    1,986
    Sep 5, 2009

    it would help if you show us your circuit
     
  3. Frank Cee

    Frank Cee

    2
    0
    Jun 21, 2017
    Sorry, I would if I knew it. It's a typical automobile ambient sensor hookup. I thought I could just maybe connect a pot or something in line with the two wires leading to the sensor to raise or lower the value 5-10 degrees.
     
  4. davenn

    davenn Moderator

    13,946
    1,986
    Sep 5, 2009
    well without knowing what the sensor is, or the circuit it's connected to
    it's really difficult/impossible to give reasonable answers

    well if it is already in a car, then I would have assumed there would already be some way of setting it when it was built in the factory
     
  5. Robert_fay

    Robert_fay

    124
    34
    Jun 15, 2017
    The only way you would be able to do this would be to test the reading at certain temps and if the readings are linear you may be able to figure out what value to add to adjust.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-