Ashcroft GL42 Indicating Differential Pressure Transmitter

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

Please Contact Us for more detail