> I have a TU10 that has worked, generally, for the 10 years since I got
> it. However, earlier this year it failed, with problems during the load
> sequence.
>
> I have traced the problem to failed (and nearly failed) vacuum
> sensors. The two "fail safe" sensors at the bottom of the two columns had
> both failed (I suspect because during operation they were always in a low
> pressure state), and one of the other sensors near the bottom of one column
> had also failed. I suspect at least one more failure is imminent.
>
> (The test is easy: if you can suck air thru it, its bad. ;-) I suppose
> there is some kind of diaphragm in there which gets a hole it in when it
> breaks).
Yup... good old rubber baloon material (or something like that).
> Micro Pneumatic Logic, P/N MPL 503. (These guys still exist! So I am
> sending them an e-mail. But new ones are bound to be pricey).
>
> Thanks in advance for any help.
>
> Jay
I'm not sure -- the 503 looks like the best bet.
It looks like a direct replacement.
Here's a few others
http://www.presair.com/presvac.htm
http://www.whitmancontrols.com/catalog/
http://www.majestic-controls.com/huba.html
--
bpechter_at_monmouth.com | FreeBSD since 1.0.2, Linux since 0.99.10
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Received on Wed Dec 20 2000 - 13:30:25 GMT