• GL42 Indicating Differential Pressure Transmitter with display
    GL42 Indicating Differential Pressure Transmitter with display

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GL42 Indicating Differential Pressure Transmitter

  • Overview
  • Applications
  • Certificates & Approvals

The Ashcroft® GL42 low differential indicating pressure transmitter is used for measurement and control of extremely low pressures and flow. Incorporating variable capacitance sensor with patented Si-Glass™ technology, this ensures high sensitivity and performance. A perfect product when reliable measurement and indication is needed.

Key Features:
  • Field selectable units of measure
  • Large, field-adjustable display
  • Configurable display response time
  • Accuracy: ±0.50% or ±1.0% span
  • Pressure Ranges: 
    0.10" IWD to 25.00" IWD (unidirectional)
    ±0.05" IWD to ±15.00" IWD (bidirectional)
  • LED display (4 digit)
  • Enclosure: NEMA 4X IP65; rugged Nylon
  • Wall mount, DIN rail or panel mount

The GL42 is ideal where consistent, and reliable differential pressure measurement is essential:

Process Applications:
  • HVAC/R
  • Building Energy Management / Comfort Control Systems
  • Critical Environments
  • Fume Hood Control
  • Laboratory / Clean Room / Hospital Room Pressurization
  • Filter Monitoring
  • Laminar Flow
  • Flow Measurement
  • CE

Related Products

GC30 Pressure Transducer

GC30 Indicating Differential Pressure Transducer with Switch Outputs

The Ashcroft® GC30 differential pressure transducer uses the patented Si-Glas™ variable capacitance sensor for monitoring a wide variety of applications.

GC52 Rangeable Wet/Wet Differential Pressure Transmitter

GC52 Rangeable Wet/Wet Differential Pressure Transmitter

The Ashcroft® GC52 wet/wet differential pressure transmitter where consistent, reliable low DP measurement is essential.


  • Distributor Locator

    Locate an authorized Ashcroft distributor in your area.

  • Materials Selector

    Use the selector to review compatible wetted materials and requirements of your application.

  • Unit Converter

    Need to convert measurement units? Check out our quick and easy approach to pressure, temperature and flow unit conversions.

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