3 replies to this topic

[schecterman]

Hi everyone, 

 

I'm installing a pressure gauge on a reaction vessel that will have fluids at around 500 F in it. The gauge is only rated for 200 F, so I want to put it on some tubing some distance from the reactor. I thought this would be a straight forward heat transfer problem to calculate the required length of tubing, but I'm having trouble. Could someone point me in the right direction? Or does anyone have any rules of thumb for this type of problem? Thanks. 

[Zauberberg]

I think you should talk to the instrument supplier and find the best solution that fits your application. Perhaps the best way could be to use an inert fluid in a siphon tube that can withstand 500 degF and act as a protection barrier.

 

Here are some examples but as said, the best thing is to discuss with the supplier.

 

[schecterman]

 

I did talk to the supplier, but they suggested buying an 800 dollar cooling tower to go on it. We decided we could come up with a cheaper solution ourselves

[Zauberberg]

See page 10 of the document: http://www.wika.us/u...en_us_17791.pdf

 

This siphon is designed for up to 700 degF and it needs to be filled with water (or other compatible separation fluid). Since they design it for high temperatures, maybe you should inquire with these folks.

 

Unless there is a real, hands-on experience in these things in your company, I would try to avoid playing with fire.