Lineal Pots in an Industrial Envir

Howdy all,

I'm just looking for information on industrial uses of lineal potentiometers. We have a machine that is subject to occasional blasts of water (usually during cleanup) and high temp (>90 degrees C)

Does anyone have any experience with a particularly good brand for this situation? Ours is from Penny+Giles and is rated IP66 but still seems subjectable to water/humidity/heat even though it is within spec limits. Any info will be greatly appreciated.

Thanks,

Christian

I have very good experiences with these guy's
www.hartogs.net
The promote hat the can make everything water, temp, pressure prove.

I use a potmeter from them in an outside situation, the also cleaan the potmeter a lot with a high pressure hose (200 Bar). Didn't break down yet, it's in please for a little bit more than one year now.

I use Novatechnik linear pots and have had good luck. Although mine are not wash down they may be able to help

http://www.novotechnik.com/products.html

Good Luck
Rich

Thanks for the info guys. The main thing is that we were going to add bellows to protect them (and still may), but am I wrong in thinking that if they are rated for this environment they should be able to handle it day in and day out?

It's been a nightmare trying to locate bellows with a small OD to match the pot body (3/4").

We just replaced one a week ago and now the same one has developed a spot during the stroke where it is inconsistant

aaarrrggghhhh!!!!

can you use proximity then everything can be in closed housing.
and yes hartogs is very good.

Christian,

Is this a situation where you could use a magnetostrictive sensor? Such as http://www.temposonics.com/ or http://www.balluff.com/

Longer life and better environmental ratings than potentiometers.

Kevin