New Differential Pressure Chart Recorders Available in 12-inch Chart Sizes

Press Release Summary:

  • Features an edge welded rupture proof pressure cell for up to 30% added lifespan and improved linearity
  • Designed for use in the oil & gas industry and ideal for monitoring flow, filtration and liquid levels
  • Available in differential pressure ranges from 20 to 400 inches of water

Original Press Release:

Palmer Wahl Instruments, Inc. Announces The Addition of Differential Pressure Chart Recorders to its Existing Line of Mechanical Circular Chart Recorders

Asheville, NC: Palmer Wahl Instruments, Inc. announces the addition of Differential Pressure chart recorders to its existing line of mechanical circular chart recorders.  Featuring an edge welded rupture proof pressure cell for up to 30% added lifespan and greatly improved linearity. The fully mechanical differential pressure cell with dual bellows design requires no power, and is made of 316L SS.  Differential pressure cell features over-range protection and pulsation dampening to compensate for variations in line pressure, as well as a temperature compensator to protect the unit from drift caused by ambient temperature changes. 

Available in 12 inch chart sizes, Palmer differential chart recorders use a 9-7/16" arc line for compatibility with famous maker charts. Designed primarily for use in the oil and gas industry, differential pressure recorders are also ideal for monitoring flow, filtration, and liquid levels. Differential pressure ranges from 20 to 400 inches of water are available now.  Add up to three additional pens for measuring pressures up to 10,000 PSI or temperatures up to 600°F; mercury free temperature systems are available with up to 10 feet of capillary.  Connect the recorder to your system using our five valve manifold kit, available as an accessory.

Each unit includes a three year limited warranty; with annual NIST calibration and evaluation at our facility, the warranty can be extended to up to ten years.

Built in our Asheville, NC, USA facility, these differential pressure recorders are the latest addition to our range of mechanical temperature and pressure recorders, in production continuously for over 60 years.  Company President Stephen J. Santangelo said “Our customers have been asking for differential pressure recorders for several years, and we are pleased to offer this new product line to meet their needs.” 

For more information, call Palmer Wahl Instruments at 828-658-3131, or email us at [email protected].

About Palmer Wahl:

Palmer Wahl Instruments, Inc. is a 183 year old manufacturer of temperature and pressure instruments for industrial applications. “Beyond the Scale” symbolizes our commitment to meet and exceed the requirements of our customers with expert industry application knowledge, innovative engineered designs, and superior temperature and pressure measurement solutions with an eye towards the future.  Contact us at (828) 658-3131 or visit us on the web at

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