Mid-West Instrument Model 121 Differential Pressure Gauge Piston Type

The Mid-West Model 121 differential pressure gauge is a piston-type gauge that offers high-performance dp measurements in a variety of environments.

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Mid West Model 121 Piston Type Differential Pressure Gauge 0 30 Kpa Cmc
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Model 121 ”Filter Minder” DP Gauge

This model is perfect for applications such as pump monitoring and filter monitoring, thanks to its high performance, rugged construction, and high precision. The 121 offers high working pressures, over-range protection, & a weather-resistant design including a shatter-resistant lens. Housing materials have options for aluminium, brass, and stainless. It comes with hazardous area versions and switches for alarm and control as well as a five-year warranty, over-range protection, and panel mounting

Mid West Model 121 Piston Type Differential Pressure Gauge 0 30 Kpa Cmc

Specifications

  • Differential Pressure Range 0-35 kPa to 0-700 kPa (0-0.35 bar to 0-7.0 bar)
  • Available in a Variety of Equivalent Ranges & Scales
  • Accuracy ±2%*
  • Operating Temp -40ºF to +200ºF (-40ºC to +93ºC)
  • Dial Size 2-1/2″ Round (Standard), 3-1/2″ Round (Optional), 4-1/2″ Round (Optional)
  • Working Pressure 6000 PSIG (400 bar)
  • Material of Construction of Body – Aluminum, 316/316L Stainless Steel.
  • Materials of Construction of Internals – 316 Stainless Steel (Standard)
  • Switch Options:
    • SPDT 3W, 0.25 Amp, 125 VAC ( 15-95% F.S.) adjustability
    • SPST 60W, 3.0 Amp, 240 VAC ( 20-95% F.S.) adjustability
  • Electrical Enclosures Weather-Resistant, NEMA 4X, IP65
  • Transmitter Options:
    • 4-20mA Loop Powered Micro Processor based Transmitter
    • Internal Push Button Zero (available for non-hazardous locations only)
    • 4 Position Terminal Strip
    • 8-28 VDC Loop Powered 2-wire interface
    • 1000 Ohm max loop resistance at 28 Vdc.
    • ±2% Accuracy from 20% to 100% of scale, ascending
    • Operating Range -20ºF to 150ºF (-20ºC to 65ºC)
    • Indicator operation is isolated from Loop Power
    • Weather Resistant
    • Assembly is housed in a NEMA 4X (IP65) Enclosure
    • Engineered plastic enclosure with 1/2″ NPT access

Common Applications

  • Filter/Strainer Monitoring
  • Compressed Air
  • Hydraulic
  • Refrigerant
  • Pump Performance Testing
  • Heat Exchanger Pressure Drop Monitoring

Product Benefits

  • Simple Rugged Designs
  • Glass Reinforced Thermoplastic Gauge Front Is Standard
  • Weather Resistant & Corrosion Resistant Gauge Front
  • Shatter Resistant Lens
  • 5 Year Warranty

Special Features

  • Over-range Protection Full to Maximum Working Pressure
  • Panel Mounting Standard
  • Pipe Mounting Kit Optional – 2″ U-Bolt
  • Wall Mounting Optional – Rear Mount
  • NACE Compliance Optional
  • Seismic Compliance Contact Factory
  • Typical Manifold Installation

Product Features

  • DP Ranges from 0-5 PSID to 0-110 PSID (0.35 to 7.0 bar)
  • Piston Sensing Element
  • Working Pressure up to 6000 PSIG (400 bar)
  • Over-Range Protection, High over Low and Low over High
  • Gauge Housings available in Aluminum, 316/316L Stainless Steel.
  • Wide Range of Elastomers

DOWNLOAD OUR MODEL 121 CATALOG DATASHEET.

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DOWNLOAD OUR MODEL 121 ELECTRICAL DATASHEET.

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INTERESTED OR HAVE QUESTIONS? GET IN TOUCH WITH US NOW!

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