Large Hook Gauge Manufacturer

[ktaylor]

Once upon a time, in a galaxy far away, I had access to a 20" hook gauge.  It had two micrometer anvils, you'd set a gauge block between, and liquid doing what liquid does, it would apply the appropriate pressure, once hooked up.

I cannot find one for the life of me.  Making one is an option, but does anyone know who makes one. 

Literally, the same concept as the Dwyer 1430's, but with the ability to get around PSI worth of pressure.

Thoughts / comments / suggestions from the braintrust?

Thanks

[NC-Cals]

We have all of the parts for one including the micrometer spindles. We might even have the green dye around some where. But we have repurposed some of the components. Our Fluke 7250LP works much better. I hated using that because everytime I was close to making the measurement someone would open the door to the lab and cause a pressure change.

[USMCPMEL]

Is there something wrong with these??
http://www.iprocessmart.com/dwyer/dwyer_model14201425_hookgages.htm

[NC-Cals]

No...we had and used the 1524-24 for several years. It is pretty tricky to use when you need to adjust equipment. You need to practice using it to get consistent.

[USMCPMEL]

I did a quick search of the interwebs and that is all that I came up with. Have not really seen one for years.

[ktaylor]

Is there something wrong with these??
http://www.iprocessmart.com/dwyer/dwyer_model14201425_hookgages.htm

When you reach out to them, they are obsolete.  I found them as well, but not iprocessmart, nor dwyer sells them anymore.

I remember all the pain in the ass with using it, but I loved ours when I worked for big defense company. Yeah there were some issues, and the uncertainty will certainly (pun intended) take a hit, but at 0.001" (or 0.0001") divisions, it gives you some flexibility.

I am hoping someone knows another manufacturer of such. 

I may have to look into low pressure modules for the Fluke 6270A system. 

Thanks for the input all.

[USMCPMEL]

How low of pressure are you looking to calibrate?

[ktaylor]

I've got a hole in our range from 1 PSI to 2.5 PSI (25 to 70 "H²O).  The Fluke 750P modules are not accurate enough.  We don't need it a lot, so the money side of the house is a bit tight on the purse strings. 

Until we sucked oil into it, we had a 2.2 PSI module for the Fluke PPC4, but have since upgraded to the 6270A system.  That worked for MOST of our issues.

I am certainly interested in any other ideas.  Thanks for brainstorming with me.

Semper Fi

[NC-Cals]

We have a Fluke P3013-6-P dead weight test that is calibrated from 14 to 800 inches of water @ 4°C calibrated to our local gravity ±0.015% of setting.

[USMCPMEL]

Who calibrates that for you?

[NC-Cals]

We return it to Fluke for calibration since it's on our scope.

[ktaylor]

Alright.  Thanks.  They won't pull the purse strings on that.  The owner of our company is a mechanical engineer.  He has mentioned trying to make one. 

I'm a tad skeptical, but we shall see how it works out.

Thanks all

[GA_PMEL_RF]

The AF cal' the hook gage to +/= 0.002" due to the use of two micrometers.  And you must use the corrections for local conditions too.

[GA_PMEL_RF]

we have one that's out of service now. has the rod sets also. micrometers are still working and i cleaned up the seals .

[ktaylor]

we have one that's out of service now. has the rod sets also. micrometers are still working and i cleaned up the seals .

Want to sell it? 

Care to send me pictures?

[email protected]