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Steam Stationary Engines, Traction Engines

Prime Gauge Tester Information Needed


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  #1  
Old 05-10-2018, 11:37:58 AM
kpny1961 kpny1961 is offline
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Default Prime Gauge Tester Information Needed

Hi. New user and I came about this site trying to research a Gauge Tester I have. I have not had any luck finding any information and was hoping someone here would recognize it. TYVM in advance.

https://www.smokstak.com/forum/attac...1&d=1525966549

https://www.smokstak.com/forum/attac...1&d=1525966549

https://www.smokstak.com/forum/attac...1&d=1525966549

https://www.smokstak.com/forum/attac...1&d=1525966549
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  #2  
Old 05-10-2018, 09:05:07 PM
DianneB DianneB is offline
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Default Re: Prime Gauge Tester information needed.

I don't know your objective but the only "gauge tester" with any validity is a lab with a calibration tester. Any "calibrated" gauge must be traceable to the National Bureau of Standards.

If it is something you want to play with as an antique or novelty, have at it.
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Old 05-11-2018, 10:22:10 AM
sawiley sawiley is offline
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Default Re: Prime Gauge Tester information needed.

The four hoses on the back make me suspect that what you have is intended to check pressures inside refrigeration systems, not inspect/test pressure gauges.
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Old 05-11-2018, 07:38:40 PM
Pete Deets Pete Deets is offline
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Default Re: Prime Gauge Tester information needed.

kpny,
First off, Welcome to Stak. Like any other public gathering all opinions are worth what you pay for them but I've found a pretty good grade of folk come here.

With the resolution of the supplied photos it is a little hard for my aging eyes to see the detail I'd like but I will offer this opinion (see warning above). My best guess is this is a type of comparison gauge tester. Your master, calibrated, traceable (per DianneB) goes where the gauge in the photo is mounted. The gauge or gauges to be tested would be connected to the ports at the back and shut off as necessary if you're testing less than 4 at a time. The handle below the master would be cranked out to allow the body & hoses to be filled with the testing fluid - oil, water, whatever. Once things are filled and all the holes plugged up the handle would be cranked in to a desired reading on the master. You then look at the gauges under test and they are supposed to match the master within the allowed tolerance.

Kind of a long-winded guess but I hope it is helpful & what you were looking for.......PD
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Old 05-12-2018, 12:35:29 AM
GreasyIron GreasyIron is offline
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Default Re: Prime Gauge Tester information needed.

Not quite enough resolution for me either. But, building on Pete's guess, I'll throw out a wild guess:

A railroad air gauge tester. It may even take CO2 cartridges to pressurize the calibrated gauge and the one being tested, or maybe one of the lines goes to a compressed air source. I believe Prime was a brand used in locomotive gauges.
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Old 05-15-2018, 04:48:52 PM
kpny1961 kpny1961 is offline
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Default Re: Prime Gauge Tester Information Needed

I'm so sorry for the crappy( for lack of a better term) pictures. Here's some that are a little better. I'm going to get a hold of Weights and Measures and go from there as the person who was going to throw this out worked for the D&H R/R but couldn't remember taking possession of it but his father was maintenance for a lab so all the responses were very close. The ends of the hoses look like some sort of Hyd. connection but I have never seen one like it. Thank you all for your help and direction. I hate to see things discarded and love to find uses for older things and if I don't have one find someone who does. I am/was a union Boilermaker for 25 yrs but living out of a suitcase got old so I took a break and now find old things to fix up.
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Old 05-15-2018, 05:49:14 PM
Thaumaturge Thaumaturge is offline
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Default Re: Prime Gauge Tester Information Needed

As suggested, it is a comparison type tester. What would be called a "transfer standard". The coaxial probe is most unusual, but not too baffling. Probe got screwed into some piece of machinery and fed four gauges. Pressure to system is applied with thread below main gauge until a set level on main gauge. Gauges on remote machine are then read and compared or possibly adjusted. Calibration tracability would come from comparing main gauge to a higher srandard.

Could easily be converted to a bench model transfer standard for checking or adjusting other gauges. Can tell from adjustment hole on face of gauge that it is a high quality (and probably very expensive) type gauge. But true accuracy and tracabily are unknown. It is NOT inherently tracable like a dead weight tester (which may be calibrated by measuring test weights and calculating ratios.)

Doc
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