combustible gas leak detector

HVAC Tech

Member

• Dec 22, 2014

• #1

I have a combustible gas leak detector with a adjustment pot on the front of the unit and it has become sloppy (horizontal play). I called manufacture to get a replacement pot and they no longer support the product. This is what I'm looking for

 

Tony Stewart

Well-Known Member

Most Helpful Member

• Dec 22, 2014

• #2

After you remove it, finding a replacement will be easier.

 

jpanhalt

Well-Known Member

Most Helpful Member

• Dec 22, 2014

• #3

That is very likely a 2K ohm side-adjust trimmer pot like this: **broken link removed**

There are many brands to chose from.

OOPs, sorry. It is top adjust. Still same design and color.

Either the 331 or 202 is the size. 331 = 330 ohm, 202 = 2000 ohm. A simple VOM meter will tell the difference.

John

 

K

KeepItSimpleStupid

Well-Known Member

Most Helpful Member

• Dec 22, 2014

• #4

This: https://www.digikey.com/product-detail/en/3310Y-001-202L/3310Y-001-202L-ND

You could replace it with a 3, 10 or 15 turn Cermet or WW pot. Here is a ww pot: https://www.alliedelec.com/search/productdetail.aspx?SKU=70089270 Check dimensions. You can even put a turns counting dial on it. Cheaper from China.

**broken link removed**

I bought a bunch from an ebay vendor. If you need the outer dimensions of the dial, holler.

 

Last edited: Dec 22, 2014

HVAC Tech

Member

• Dec 27, 2014

• #5

Ok, removed the part and ohm'ed it out. It is a 2k ohm rated pot, should have done that first. I like the higher quality pots you referenced but will a pot with multiple turns affect the operation if the one being replaced is only a 3/4 turn pot. I would seem that all you would have is a more precise value with it have more turns.

 

alec_t

Well-Known Member

Most Helpful Member

• Dec 28, 2014

• #6

The original pot looks like a sealed type. That may be important for safety, given its use in a gas leak detector.

 

dr pepper

Well-Known Member

Most Helpful Member

• Dec 28, 2014

• #7

Yes ypu need something ex rated (flameproof).