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Designed to measure liquid level of corrosive liquids, the AST4530 features submersible PVDF cable, cord grip and housing.  The AST4530 features a conduit connection for turbulent installations such as on-board ships, turbulent tanks, and rail cars. Voltage and 4-20mA output signals allow users to interface for low current consumption or long distance transmission applications. The AST4530 is CSA157 certified to Class I Div 1, Groups C and D for use in intrinsically safe areas with an approved barrier, ANSI/ISA 12.27.01 Single Seal Approved and ATEX / IECEx Exia IIB Class I, Zone 0, T4. CAN/CSA C22.2 No 60079-0:11, ANSI/ISA 60079-0:09, CAN/CSA E60079-11:02, ANSI/ISA 60079-11:11, CAN/CSA C22.2N.157-92, UL 913 (6th Edition).  


  • ABS (American Bureau of Shipping) and DNV approved
  • Class I Zone 0 Exia IIB T4 Ga (Ta = 0°C to +60°C) 
  • Excellent liquid and gas compatibility 
  • Cost effective alternative to ultrasonic & radar sensor technologies 
  • Works with reflective liquids 
  • Will not fail due to vapor 
  • No galvanic corrosion or risk of bacteria 


Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Sensor Type  Liquid Level Pressure Transducers

  • Type  Gage

Configuration Features

  • Pressure Port/Fitting  None

  • Electrical Connection  Conduit 25 ft, Conduit 50 ft, Conduit 75 ft

Electrical Characteristics

  • Supply Voltage (V) 10 – 28, 3 – 5, 4.75 – 5.25

Body Features

  • Port Material  PTFE, PVDF

Usage Conditions

  • Operating Temperature  -40 – 80 °C [ -40 – 176 °F ]


  • Overpressure  2X, Min

  • Pressure Range  0 – 2 to 30 psi

  • Output/Span  .5 – 4.5 V, .5 – 4.5 V, 1 – 5 V, 4 – 20 mA, 4 – 20 mA

  • Accuracy  ±0.25% FSO


  • Options  Custom Cable Lengths

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This information has been provided to your free of charge for your use but remains the sole property of TE Connectivity Corporation (''TE'') or SnapEDA,  Inc. or Ultra Librarian/EMA Design Automation, Inc. (collectively, "Company"). While Company has used reasonable efforts to ensure its accuracy, Company does not guarantee that it is error-free, not makes any other representation, warranty, or guarantee that the information is completely accurate or up-to-date. In many cases, the CAD data has been simplified to remove proprietary detail while maintaining critical interface geometric detail for use by customers. Company expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.