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Cryo valve testing thermocouple question

Cryo valve testing thermocouple question

Cryo valve testing thermocouple question

(OP)
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

 

RE: Cryo valve testing thermocouple question

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.

RE: Cryo valve testing thermocouple question

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

TTFN

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RE: Cryo valve testing thermocouple question

(OP)
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.  

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