Thermistor's beta parameter for article no. 17596

J

Jitenshazuki

New member
Hello!

Neither the shop page, nor the datasheet contain the beta parameter for the thermistor in your temperature sensor products.

I'm particularly inerested in the beta parameter for the article no. 17596 (Alphacool Eiszapfen temperature sensor flat G1/4 - black). Alternatively, I need its resistance at a given temperature, like 85C.

(I guess I can try measuring it myself, but it's a bit of a hassle, and I've already assembled and filled the loop...)
 
Eddy

Eddy

Iceman
Staff member
Tomorrow,

We have never been asked this question before, because temperatures above 60° should never occur in a water circuit for a PC. All water cooling components are only approved up to a maximum of 65°. Anything above that would generally mean overheating. Normal water temperatures are around 35-50°. In the server sector, it can be up to 60°, but never higher.

As a standard 10K Tornister is used here, you will certainly find the relevant data on the Internet. I can't give it to you here because we don't have the data. As I said, no one has ever asked me that in the 10 years I've been with the company, sorrry.
 
J

Jitenshazuki

New member
Eddy said:
Tomorrow,

We have never been asked this question before, because temperatures above 60° should never occur in a water circuit for a PC. All water cooling components are only approved up to a maximum of 65°. Anything above that would generally mean overheating. Normal water temperatures are around 35-50°. In the server sector, it can be up to 60°, but never higher.

As a standard 10K Tornister is used here, you will certainly find the relevant data on the Internet. I can't give it to you here because we don't have the data. As I said, no one has ever asked me that in the 10 years I've been with the company, sorrry.
Click to expand...

My motherboard doesn't support external temperature sensors, so I found some ATtiny45 in my stuff and made my own fan controller.

10K NTC Thermistor only means that it measures 10KOhm at (usually) 25C and that its resistance falls as temperature raises.

The curvature of resistance as a function of temperature is different for different NTC thermistors. Basically that R-T table that Vanzin has kindly linked is a bit different for different thermistors. E.g. I found a datasheet for an NTC thermistor with B=3950 and its resistance at 45 degrees is 4354 Ohm which corresponds to 48.5 degrees for the thermistor in your product. Usually beta is calculated from resistances at 25 and 85 degrees and that's why I asked for that temperature. Honestly, I don't want or expect my setup to go over 50 degrees in summer, but that's yet to be tested...

This difference is not a big deal for my primary goal of controlling the speed of fans on radiators, but I've got two free pins on my attiny45 and now I want to add a display...

I hope that adds some clarity why I need this parameter.
 
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