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MG TD TF 1500 - testing a oil pressure gauge

Is there another way to test a oil pressure gauge other than fitting another?
JK Mazgaj

You don't have to use oil. You can put air pressure into it as well. Pressure is pressure, so if you have an air compressor, set the regulator to a range that is compatible with the oil pressure gauge and connect it. An air gun with a rubber tip will work also. Of course you need to know the actual pressure in the air line in order to know if the gauge you're testing is accurate.
Steve Simmons

We had to do something similar in High School Physics lab.

Fill 50 ft of plastic tubing on the with water, (could also be a 50 hose with an adapter to fit the gauge fitting). Put the gauge in the basement with one end of the tube/hose 50 feet up vertically the other on the gage.

Now water PURE weighs 62.4387 lbs. for each cubic foot.

Thats 0.43353 lbs/in^2 for each foot of column height.

Thus 50 ft of hose/tube would exert a pressure of 21.6756 lbs.

Thats sort of the low end of the range you want to check. But it is exact.

If you had a bottle of Mercury (doesn't everyone?) you could get away with 3.69 feet of tubing.

Jim B.
JA Benjamin

Genuinely thanks for that Jim. I bet at the time you thought what the hell do I want to know that gem for!! Now where's that ladder -wife you need to get up on the roof.Ha Ha.
JK Mazgaj

You might get away with a shorter ladder if you remember that 33’ of water would give you 1atmosphere or 14.7 psi and if you use sea water you would only need 32’.

Chris

Basic scuba training wasn’t as long ago as high school physics.....
C I Twidle

62.4387lbs / 144sq.ins = 0.433602 lbs/sq.in/ft
0.433602lbs/sq.in/ft X 50ft = 21.6801 lbs/sq.in
R WILSON

This thread was discussed between 19/07/2019 and 20/07/2019

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