Differential Pressure Units

We repair in-house for purchase or exchange the Barton Type 199 differential pressure units. Every unit gets new zinc dichromate electroplating as well as brand new and never before used convolution assemblies.  

The most common units that stocked are of the 2500 PSIG SWP specification.  We keep units ready to ship in numerous differential pressure ranges including: 0-20", 0-50" 0-100", 0-200", 0-300"  and 0-400" Water Column ranges

Peterson Instruments also stocks the 1000SWP model 199 units and the hi differential units for ranges up to 75psig differential.

Range Springs

Stocked ranges of 0-20", 0-50', 0-100", 0-200", 0-300", and 0-400" W.C. We stock sour service application range springs only.

Static Elements

Our replacement static element are made to similar standards as the originals at a fraction the cost. We stock large quantities of pressure ranges up to 0-10,000psig. Ranges up to 20,000psig available on special order.  more...

Thermal Systems

We can custom make almost any length and range of thermal systems. With our standard large stock being of 0-150F x 10 foot long armored capillary, in the case compensated type, VB. Ask about our third pen kits with everything you need to add the temperature measurement option to your recorder.

Thermowells

We stock thermowells that fit Barton Thermal systems in process connections sizes of 3/4" and 1" MNPT and 'u' lengths to 2, 3 ,4 ,5 ,6, 8, &12" pipe.  316 Stainless Steel.

Instrument Leveling Saddles

Our saddles are cast steel for extraordinary strength whiule retaining the ability to be produced economically.  We stock 2, 3, 4, 6, 8, 12" leveling saddles with a 2" FNPT outtage fitting. 

We also stock the outtage pipe in lengths of 24".

Sonney Orifice Flow Computer

The Sonney Orifice Computer was developed by K.J. Sonney and Produced originally by Willsonn Computers from Little Hocking Ohio circa 1958.  It is the industry standard for spot checking orifice metered flow rates.  Easy to use and reliable it is still a 'must have' tool for every gas and oilfield production engineer, operator and supervisor.  It is defined as a computer because it is in actuality a slide rule.  

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