Starting at $332.40
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  • UL/cUL 913 (CSA 157) Class 1 Div 1 Groups A, B, C, D when installed with an approved barrier
  • Pressures up to 10,000 PSI
  • Accuracy: < ±0.25% BFSL (<±0.5% BFSL for 7500 & 10,000 PSI )
  • No oil, welds or internal O-rings
  • Wide operating temperature
  • Compatible with a variety of liquids and gases
  • IP-66 rating


The AST4401 is an intrinsically safe pressure transmitter for accurate, reliable, and cost effective pressure measurement. With its rugged construction and the best price-to-performance ratio in the industry, the AST4401 is the solution for pressure measurement in Intrinsically Safe areas.

The AST4401 is suitable for a wide range of applications with most liquids and gases and conforms to Class I Division 1 Groups A, B, C, D Intrinsically Safe when installed with approved barrier (UL / CSA). A wide range of outputs including 0.5-4.5V, 1-5V, 4-20mA, and 1-6V are available. Each pressure sensor's high strength stainless steel construction contains no oil, no welds, and no internal O-rings. Measurements are available in gauge pressure covering ranges up to 10,000 PSI with a standard accuracy of ±0.25% BFSL.

Applications for the AST4401 Pressure Sensor:

  • Industrial OEM equipment
  • HVAC/R equipment
  • Water management
  • Intrinsically safe control panels
  • Pneumatics
  • Hydraulic systems
  • Data loggers


This product can be used in the following applications: