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The Ashcroft® GL42 low differential indicating pressure transmitter is used for measurement and control of extremely low pressures and flow. A variable capacitance sensor with patented Si-Glas™ technology, ensures high sensitivity and performance. The GL42 provides both local and remote readings and reliable low pressure measurement in HVAC/R and other critical environments.
Unit of Measure

Specifications

Brands

 N/A Ashcroft®

Reference Temperature

 N/A 77 ºF25 ºC

Non-Wetted Materials

 N/A Enclosure: Nylon

Mounting

 N/A Wall Mount Director Identification Number (DIN) Rail or Panel Mount

Accuracy

 N/A ± 0.5%, ± 1.0% of Span (Terminal Point Method: includes non-linearity, hysteresis, non-repeatability, zero offset and span setting errors)

Outputs

 N/A 4 to 20 mA

Stability

 N/A ± 0.5% Span/Year at Reference Conditions
Wetted Material1 N/A Media: Clean, dry air/gases compatible with Aluminum, Titanium, PBT, Buna-N®, Glass, Gold, Silicone Rubber, Silicon, Silicone RTV and Brass.

Enclosure Ratings

 N/A Ingress Protection (IP65)

Pressure Connection

Pressure Connection (National Pipe Thread (NPT) Female)

 N/A 1/8 in

Barbed Male Size

 N/A 1/4 in

Pressure Connection Type

 N/A National Pipe Thread (NPT) Female Barbed Male

Pressure Ranges

Pressure Ranges for Unidirectional

 N/A 0.10 to 25 inH2O

Pressure Ranges for Bidirectional

 N/A ± 0.10 to 15 inH2O

Key Features

Key Features

 N/A
  • Field selectable units of measure
  • Large, field-adjustable 4-digit LCD display
  • Adjustable display response time
  • Excellent overpressure protection
  • Ranges available down to 0.1 in. H2O
  • CE Mark standard

Applications

Applications

 N/A 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
  • 1 Not For use with Liquids