Temperature sender value

[canuck]

 Chaps
Can any of you tell me what the resistance values is for this temperature sender is?



Original equipment Smiths accessory.

Thanks
Bruce

[jonnyb]

Hi Bruce, If that's the Riley one I have just checked mine at 655ohm with lead disconnected. Looking the other way at the gauge it was 83ohm

[canuck]

Thanks Johnathan,

I will get out my multimeter and check this out.

Keep well,

B

[ozieagle]

Hi Bruce, I can't help with the values, but just wish to remind you that, beside the resistance value, you need to measure the temperature, as well, since the thermistor is temperature sensitive. I haven't done any work with thermistors, but believe they are specified at two temperatures, which defines the curve.

Herb

[canuck]

Hello Herb
I am not quite sure what you mean?

I am trying to determine if this sender matches the gauge in the car. I am told it is a Riley sender so I was curious what I should find before I swap it out for my current one that is questionable.

B

[ozieagle]

Hi Bruce.

Thermistors are temperature sensitive devices, therefore just specifying the value is relatively useless, since it varies with temperature. My comment that you need two readings, at different temps is not quite true, much more complicated. Ive attached typical curves to show what I mean, copied from

www.tdk-electronics.tdk.com/download/531116/19643b7ea798d7c4670141a88cd993f9/pdf-general-technical-information.pdf

if you want really detailed info.

Herb

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