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peteolsen
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Join Date: Dec 2009
Location: Coffeyville, KS
Posts: 59

Extemely Low Pressure Regulator

03/14/2013 4:40 PM

I am in need of a pressure regulator that is very accurate for Inches of Water Column.

Does anyone know of a brand name or source?

Regards...

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Pathfinder Tags: "h2o low pressure regulator
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lyn
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#1

Re: Extemely Low Pressure Regulator

03/14/2013 5:08 PM

Regulator? You want to regulate the water column?

Do you mean a manometer?
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Iris
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Join Date: Jul 2010
Posts: 669
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#2

Re: Extemely Low Pressure Regulator

03/14/2013 5:59 PM

Jordan Valve - tank blanketing low pressure gas regulators
http://www.jordanvalve.com/products/regulators/pressure-reducing/96/mark-608is--tank-blanketinglow-pressure-gas

Siemens bought Moore some years ago.
http://www.industry.usa.siemens.com/automation/us/en/process-instrumentation-and-analytics/process-instrumentation/pneumatic-regulators-and-relays/Pages/Pneumatics.aspx
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peteolsen
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Join Date: Dec 2009
Location: Coffeyville, KS
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#4
In reply to #2

Re: Extemely Low Pressure Regulator

03/14/2013 9:45 PM

the model 40-2 is exactly what I am looking for. 1-50 "h20...

I need this to calibrate differential pressure transmitters that have a range of 4.16 - 19.4

" h2o which is below the calibration range I can do with the current equipment I have. Thanks...

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lyn
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#3

Re: Extemely Low Pressure Regulator

03/14/2013 7:25 PM

Sorry, now I get it.

Semantics again.
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KeepItSimpleStupid
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#5

Re: Extemely Low Pressure Regulator

03/14/2013 11:50 PM

Or too much coffee? Coffeyville, KS?
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PWSlack
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#6

Re: Extemely Low Pressure Regulator

03/15/2013 4:43 AM

Well, bubbling the gas through that water column is the easiest route to take in the absence of any other information, like line sizes, vessel volumes, flowrates, process materials, and so-on.

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Reiff
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Join Date: Jan 2010
Location: Switzerland
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#7

Re: Extemely Low Pressure Regulator

03/15/2013 6:33 AM

Try this one.

http://www.zuercher.ch/index.php?lang=en
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peteolsen
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Join Date: Dec 2009
Location: Coffeyville, KS
Posts: 59
#8

Re: Extemely Low Pressure Regulator

03/15/2013 8:34 AM

Sorry, lack of information on my part.

I am looking to (adjustable very low pressure) use this for calibrating differential pressure transmitters in the range of 4 - 20 "H2O.

I was sent a link by one of the readers to a Siemens model 40-2 which is exactly what I need.

I Googled this up front using extreme low pressure regulator which returned no favorable results.

No further comments are needed.

Thank you.

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vsar
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Join Date: May 2010
Location: Metro.Manila, Philippines.
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#9

Re: Extemely Low Pressure Regulator

03/15/2013 9:35 AM

Some 30 years back I had used this kind of test equipment when overhauling/ fixing and calibrating ventilators and respirators. Fluke Instruments who bought some other medical instrumentation company should have this kind of instrument among their medical related or specialty product lines?

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tonykuphaldt
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Engineering Fields - Instrumentation Engineering - New Member Engineering Fields - Control Engineering - New Member Technical Fields - Technical Writing - New Member Technical Fields - Education - New Member Fans of Old Computers - Apple II -

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#10

Re: Extemely Low Pressure Regulator

04/11/2013 10:43 AM

A simple trick I've used with success is to get the lowest regulated pressure that I can from a standard pressure regulator, then use a pair of needle valves in series as a "pressure divider circuit" with the instrument under test sensing the pressure between the valves. So long as the regulated supply pressure is constant and the needle valve positions aren't moved, the pressure to the instrument under test will be constant as well, at whatever ratio you set by adjustment of said needle valves.

The image here shows the electrical equivalent of the solution:

Just imagine doing this with air pressure, not electrons. Works like a charm. Better in fact -- charms don't work at all.

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peteolsen
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Join Date: Dec 2009
Location: Coffeyville, KS
Posts: 59
#11
In reply to #10

Re: Extemely Low Pressure Regulator

04/22/2013 1:07 PM

I Like!

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Users who posted comments:

Iris (1); KeepItSimpleStupid (1); lyn (2); peteolsen (3); PWSlack (1); Reiff (1); tonykuphaldt (1); vsar (1)

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