Starting at $590.25
  • Usually ships in 12 weeks



  • Si-Glas silicon variable capacitance sensor technology
  • Accuracy: ±0.50% or ±1.0% span
  • Pressure Ranges:
    • 0.10 inH2O to 25.00 inH2O (unidirectional)
    • ±0.05 inH2O to ±15.00 inH2O (bidirectional)
  • Excellent long term stability
  • 4-20 mA Output (2-wire)
  • IP65 Housing
  • Four digit LCD display
  • Field selectable units


The Ashcroft GL42 Low Differential Pressure Transmitter is used for measurement and control of extremely low pressures and flow. Incorporating variable capacitance sensor with patented Si-Glas™ technology, this ensures high sensitivity and performance. A perfect product when reliable measurement and indication is needed.

Applications for the GL42

  • Filter monitoring
  • Flow measurement
  • Clean room monitoring
  • Fume hoods