Mid-West Instrument
Tel: (586) 254-6500 · Fax: (586) 254-6509
6500 Dobry Dr., Sterling Heights, Michigan 48314
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Indicators - Models 126, 127, 146, 444, 522, 555 for OEM Applications
Models 126, 127, 146, 444, 522, 555

Product Features/Benefits

  • 126/127 Differential Pressure Gauge/Switch Low Cost, 5% F.S. Accuracy
  • 146 Differential Pressure Gauge/Switch Low Cost, 5% F.S. Accuracy
  • 444 Differential Pressure Gauge PLASTIC Low Cost, 5% F.S. Accuracy
  • 522 Differential Pressure Gauge/Switch ALUMINUM Low Cost, 5% F.S. Accuracy
  • 555 Differential Pressure Gauge PLASTIC Low Cost, 5% F.S. Accuracy
Model 126/127

The Model 126/127 Series differential pressure indicator is a piston-type ∆P gauge. It is low cost and reliable for measuring pressure drop across filters, stainers and separators. In addition, switch options are available.

Model 146

The Model 146 Series differential pressure indicator is a diaphragm-type ∆P gauge that has total separation between the high and low sides. In addition, switch options are available.

Model 444

The Model 444 Series Differential Pressure Indicator offers a simple, yet functional design for use with filters, strainers, etc. This low cost indicator makes the perfect alternative to more costly differential pressure gauges where readability, small size and price are important considerations.

MODEL 522 “FILTER-MINDED”

The Model 522 Series Differential Pressure Indicator has a rubber rolling diaphragm and a metal body. In addition, switching options are available.

  • Range: 0-5 PSID thru 0-50 PSID
    (0.35 bar thru 3.4 bar)
  • Max. Static Pressure 1000 PSIG
    (69 bar).
  • Max. Differential Pressure: 200 PSID
    (13.8 bar)

Model 555

The Model 555 Series Differential Pressure Gauge offers a two-sided dial, an optional switch output, and an optional switch output with LED, for use with filters, strainers, etc. While this low cost gauge is a "step up" from the Model 444, it still provides another alternative to the more costly differential pressure gauges with equivalent functionality.