American Sensor Technologies - AST4400 (Cert. ATEX)(Intrinsically Safe Pressure Transducers (ATEX Cert.) American Sensor Technologies

AST4400 (Cert. ATEX) Intrinsically Safe Pressure Transducers (ATEX Cert.)


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  • Krystal Bond™ Technology 
  • Class I Div 1 Groups C, D Intrinsically Safe when installed with approved barrier 
  • ATEX II 1G Ex ia IIB T4 Ga (Ta = -40°C to +80°C) 
  • CE EN61326 
  • ABS (American Bureau of Shipping) Type Approval 
  • High strength stainless steel, Inconel or Hastelloy C276 sensor 
  • No oil, welds or internal o-rings 
  • Pressures to 20,000 PSI 
  • Unparalleled Price and Performance 
  • Compatible with wide range of liquids and gases 
  • EMI/RFI Protection


The AST4400 is a media isolated, stainless steelintrinsically safe pressure transmitter with a wide variety of options. With its rugged construction and best price-to-performance ratio in the industry, the AST4400 is the solution for pressure measurement in Intrinsically Safe (IS) areas. It utilizes AST's proprietary Krystal Bond™ Technology, a one-piece stainless steel sensing element that offers excellent long-term stability and repeatable results.

The AST4400 pressure transmitter is also available with CSA Single Seal Approval to save customers the added cost of secondary seals required for Canadian installations.