Cryo valve testing thermocouple question

[nrw28]

Hi

I am a recent graduate in my first job. Currently working on a crygenic test of a valve.

I'm trying to find a method of measuring the temperature of the inside of the valve, whilst it is emersed in a tank of liguid nitrogen. Is this possible?

Any help/ideas you can give me would be much appreciated.

Many thanks

Nick

 

[iainuts]

Hi nrw,
Is the valve under any pressure, and if so what is it? What's the purpose of the test?

I suppose you could pass a thermocouple through an epoxy sealed passage, either drilled directly into the valve or through a plug screwed into a port. There's plenty of things you could do but I suppose it partly depends on what the intent and conditions of the test are.

 

[IRstuff]

LN2 temperatures can be measured with a variety of sensors, including specially calibrated diodes and displays from Lakeshore

TTFN

FAQ731-376

 

[nrw28]

hi iainuts

Thanks for the reply, yes the valve is under pressure it is filled with 10.4 bar of helium. So gromits and the like are out of the question, I am performing a seat leak test as well as a futuretive emmissions test.