Need Help? Call a Calibration Engineer 1-800-884-4967

We're open 8:00am to 5:30pm ET


  • Accuracy < ±0.25% BFSL
  • Operating temperature -40 to 85°C
  • IP66 rated
  • Ranges up to 20,000 psi
  • Vacuum ranges available on request
  • UL/CUL approved
  • One-year warranty

The all stainless steel AST4400 pressure sensor is a low cost, high quality, media isolated pressure sensor intended for use in the measurement of gases and liquids compatible with stainless steel. The AST4400 pressure sensor is approved to UL 913 (CSA 157) Class 1, Div 1, Groups C and D for use in intrinsically safe areas when used with an approved barrier.

AST4400 pressure sensors are suitable for use in the oil patch regions, refineries, water treatment plants, natural gas compressors, and pharmaceutical applications. The AST4400 pressure sensor has been designed specifically for those applications with demanding price and performance requirements.

The competitively priced AST4400 pressure sensor offers wide range of outputs. The high strength stainless steel construction of the AST4400 pressure sensor contains no silicone oil, no welds, and no internal O rings. The AST4000 pressure sensor offers measurements in gauge and sealed gauge pressure covering ranges up to 20,000 PSI. The AST4400 pressure sensor is ideal for applications needing high accuracy, excellent long-term stability, trouble-free operation, long life, and high performance.

Applications for the AST4400 Pressure Sensor

  • Industrial OEM Equipment
  • Hydraulic Systems
  • Train braking circuits
  • HVAC/R Equipment
  • Refrigeration
  • Oil platforms
  • Test stands
  • Data loggers
  • Agriculture Equipment
  • Energy & water management
  • Pressure instrumentation

Benefits of the AST4400 Pressure Sensor

  • User accessible zero & span adjustments
  • High strength stainless steel construction
  • No silicone oil, internal O-rings or welds
  • Wide operating temperature range
  • Ranges up to 20,000 psi
  • Low static and thermal errors
  • Unparalleled price and performance
  • Rugged design survives harsh environments
  • Wide media compatibility
  • Suitable for high shock and vibration applications
RoHS logo

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

AST Mini DIN Mating Connector
Mini DIN 43650C right angle mating connector (includes screw & gasket) for AST pressure switches
AST Packard Mating Connector
Packard 150 Metripak 3-pin Mating Connector (Includes 3 Terminal Pins). For AST Pressure Switches


Please consider these optional accessories.

AST NIST Traceable Certificate
5-Point NIST Traceable Certificate for new AST Pressure Sensors
AST A08670 Cooling Adapter
1/4in NPT female to 1/4in NPT male 316L SS cooling adapter for pressure sensors, reduces the temp by 100°F at ambient temp of 70°F
In Stock


This product can be used in the following applications: