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Model GL42 Low Differential Indicating Pressure Transmitter

Brand: Ashcroft Inc
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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-Glas™ technology, this ensures high sensitivity and performance.

A perfect product when reliable measurement and indication is needed.
Features
  • Excellent long term stability 
  • Four digit LCD display 
  • Field-selectable units (i.w.c., pascal, millibar) 
  • 4-20 mA output (2-wire) 
  • IP65 housing 
  • Wall, panel or DIN rail mountable versions 
  • Adjustable display response time - 250 milliseconds, 1 second, 2 seconds or 5 seconds 
  • Optional NIST traceable calibration chart 
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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-Glas™ technology, this ensures high sensitivity and performance.

A perfect product when reliable measurement and indication is needed.
Features
  • Excellent long term stability 
  • Four digit LCD display 
  • Field-selectable units (i.w.c., pascal, millibar) 
  • 4-20 mA output (2-wire) 
  • IP65 housing 
  • Wall, panel or DIN rail mountable versions 
  • Adjustable display response time - 250 milliseconds, 1 second, 2 seconds or 5 seconds 
  • Optional NIST traceable calibration chart 
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Specifications

Brand

Linearity

  • ± 0.5 % of Full Scale
  • ± 1 % of Full Scale

Display

  • 4-Digit LCD

Operating Temperature

  • -20° to 70° C (-4° to 158° F)

Burst Pressure

  • psi: 24.65 (kPa: 170, bar: 1.7)

Compensated Temperature

  • 2° to 54° C (35° to 129° F)

Adjustment

  • Zero: ± 33 % of Full Scale

Tube Connection

  • 1/4” Barbed Tube Fitting Male

Output

  • 4-20 mA, 2-Wire

Materials of Construction

  • Cable Connection Socket: Nylon
  • Polyester Foil (Front)

Pressure Range

  • Inches WC: -15 to 25

Span & Zero Effect

  • Adjustment: ± 5 % of Full Scale

Temperature Coefficient

  • Zero & Span: ± 0.06 %/K within 2° to 54° C (35° to 129° F), Reference Temperature 25° C (77° F)

Mounting

  • DIN Rail
  • Panel Mount
  • Wall Mounted

Media

  • Clean, Dry Air
  • Non-Corrosive Dry Gases

Enclosure, Body Material

  • Nylon

Proof Pressure

  • psi: 14.5 (kPa: 100, bar: 1)

Storage Temperature

  • -40° to 90° C (-40° to 194° F)

Environmental Protection

  • IP65

Repeatability

  • ± 0.5 % of Full Scale
  • ± 1 % of Full Scale
  • ≤ ± 0.1 % of Full Scale

Static Pressure

  • Maximum

NACE & NIST

  • NIST

Accuracy

  • ± 0.5 % of Full Scale
  • ± 1 % of Full Scale

Sensor, Probe Material

  • Sensor: Aluminum
  • Sensor: Glass
  • Sensor: Silicon

Stability

  • ≤ 0.5 % of Full Scale Per Year

Hysteresis

  • ± 0.5 % of Full Scale
  • ± 1 % of Full Scale

Name Plate, Tag Material

  • Stainless Steel

Humidity

  • 10 to 90 % Relative Humidity, Non-Condensing

Approvals & Certifications

  • CE EN 61000-4-2, EN 61000-4-3
  • RoHS

Supply Voltage

  • 19-36 Vdc (Nominal 24 Vdc)
  • Nominal 24 Vdc

NPT Connection

  • 1/8” NPT Female

Electrical Connectors

  • 1/2” Female DIN Cable Conduit
  • PG9 Cable Gland
  • Screw Terminal
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Applications

  • Clean Room Monitoring
  • Filter Monitoring
  • Flow Measurement
  • Fume Hoods
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