Ashcroft GC55 Wet Indicating Differential Pressure Transducer with Switch Outputs

The Ashcroft® GC55 is a high-differential pressure transducer incorporating two thin film sensors; unit output signaling may be connected to external controls or data acquisition. An ideal product for monitoring or controlling a wide variety of wet or dry media.

Key Features:

  • Robust, cast-aluminum enclosure
  • 3-in-1 capability: digital pressure gauge, switch and transducer
  • Min. / max. feature records low and high pressure events
  • Programmable switch setting and analog scaling
  • Bright LED display; pressure and switch status
  • Internal "push button" settings allow for field selection between the DP value and the line pressure readings from either sensor


  • Accuracy: ±0.50% span (analog output) / ±1.00% span (display and switch outputs)
  • Differential Pressure Ranges: 75 to 300 psid (field rangeable from -105% to +105%)
  • NEMA 4X (IP66) aluminum enclosure
  • Wetted material: all-welded stainless steel
  • LED display (3 1/2 digits)
  • Output: 4-20 mA (3-wire) or 1-5 Vdc versions


The GC55 is ideal where consistent, and reliable differential pressure measurement is essential:

Industrial and OEM Applications:

  • Pump Controls
  • Compressor Control                                                                                  

Process Applications:

  • Filter Monitoring
  • HVAC Hydronic Cooling / Heating Systems

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