Register to reply

What can be used to measure liquid nitrogen temperature?

by Artlav
Tags: liquid, measure, nitrogen, temperature
Share this thread:
Jul14-14, 01:31 PM
P: 145

I'm looking for a common electronic component that can be used to determine a temperature between room temperature and that of liquid nitrogen.

-Multimetre probe failed, getting stuck at -135*C
-Common NTC thermistors rapidly ascent past gigaohm range, even from 1Ω-5Ω initial values
-A ceramic capacitor looses a consistent amount of capacitance between here and there, but the capacitance keeps slowly trickling away at LN2 temperature (and i don't have a clue at what relationship is there between the C and T).
-A common resistor does not loose or gain any significant or consistent amount of resistance.
-A cr2032 battery ceases to work sharply

So, the question is - what is a practical way to measure such temperatures, without sourcing special probes and components?

The only thing that gives consistent data points on both ends is the ceramic capacitor - is it a valid temperature sensor? How exactly does it respond to temperature?
Phys.Org News Partner Physics news on
IHEP in China has ambitions for Higgs factory
The physics of lead guitar playing
The birth of topological spintronics
Jul14-14, 01:47 PM
Sci Advisor
PF Gold
UltrafastPED's Avatar
P: 1,908
Have a look at

Then pick the thermocouple or RTD that matches your requirement best.

Register to reply

Related Discussions
Liquid nitrogen transfer into nitrogen purged enclosure Engineering Systems & Design 2
How much liquid nitrogen? General Physics 8
Liquid Nitrogen General Physics 0
Liquid nitrogen temperature superconductors Introductory Physics Homework 1
Liquid Nitrogen vs. Liquid Helium General Physics 2