Pressure gauge filled with extra glycerin for horizontal mounting

Not often but there are guests that are right. Here boys I found one.

GA for you even though it does not count up.

Guest is correct. Now for the rest of the story. The compressible air bubble is there to accomodate the expansion of the fluid with temperature. Fluid expansion with increasing temperature, is greater than the volume expansion of the container that holds it. This can cause pressure levels that distort or rupture the container. An internal gas bubble is a low cost method of dealing with this, but there are others such as a bellow or a diaphragm.

I agree with guest and I give him a GA. We use allot of glycerin filled gauges in our mill in just about all positions and never had a problem.

pipewelder

Thanks for the fast reply, the problem infact is that in horizontal mounting the needle is moving with high vibration, because no glycerin is available to slow-down the run (all the gliceryn fall down in the bottom of the gauge box) I have to rise his level with an extra fill.

And the bad news is that the customer doesn't allow me to insert a gauge isolators :(

Regards

If an isolator is not permitted, how about a snubber. A snubber is a restriction that goes in-line with the gauge and prevents rapid changes in pressure. You must determine whether the needle fluctuation is caused by ambient vibration or from pressure changes. If your problem is ambient vibration, you might try shock mounting the gauge.

If at all possible, why not fit the gauge remotely so that correct orientation is possible?