Process gauges from Marsh Instruments. With over 125 years of proven experience, Marsh offers the most complete line of process gauge instrumentation in the industry.

An extensive list of designs and options makes them the intelligent and practical choice for process instrumentation.

Units are available in four unique safecase solid-front designs with both 4-1/2” and 6” dial sizes, and choice of dry or liquid filled versions, for pressure monitoring capabilities from vacuum to 20,000 psi.
Features
  • Dial sizes of 4-1/2″ and 6″. 
  • Four safecase solid front designs. 
  • Pressure ranges from vacuum to 20,000 psi. 
  • Dry or liquid filled. 
  • Micrometer pointer.

Specifications

Accuracy

  • ASME Grade 2A - ± 0.5 % of Full Scale

Case Sizes

  • 4-1⁄2" and 6" diameter

Case Material

  • Safecase Polypropylene (Turret style only) & safecase Aluminum

Case Style

  • 6": G - Back flanged Case
  • T - Turret (Polypropylene)
  • H - Front flange Hinged Ring (Aluminum)
  • 4-1⁄2": G - Back Flanged Case (Aluminum)

Tube & Socket

  • Copper Alloy or 316 Stainless Steel

Movement

  • Stainless Steel

Connection

  • LBM - Lower Back Mount
  • LM -Lower Mount
  • 1⁄4 or 1⁄2" NPT

Ranges

  • 30" Hg Vac to 300 psi, 15 to 20,000 psi
  • 0 to 30" Hg Vac, Compound

Dial Standard

  • Single Scale psi

Dial Color

  • Black Markings on White

Pointer

  • Aluminum, Black Painted, micro-Adjustable

Window

  • Safety Glass

Fill Medium

  • Optional factory filled glycerine or Silicone
  • Dry or filled. Note: All 4-1⁄2" Lower Mount Process Gauges are field-fillable.

Safecase

  • Safecase construction Standard on all Process Gauges

Vent

  • Internal Compensating Diaphragm

Weight

  • Polypropylene 3.0 Lb Dry
  • Aluminum 5.0 Lb Dry
  • Aluminum 6.0 Lb Filled
  • Polypropylene 4.0 Lb Filled

  • Compressors
  • Chemical and petroleum processes
  • Power plants
  • Oil platforms

Documentation

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