• Performance @ 25°C (77°F)
    • Accuracy: <±1.0% of FS
    • Stability: ±0.5% FS, typ
    • Line pressure max: 200 psi
    • Burst pressure: 2000 psi
    • Pressure cycles: >100,000 cycles
  • Operating range: -40 to 80°C (-40 to 175°F)
  • Storage temperature: -40 to 100°C (-40 to 212°F)
  • M12x1 Eurofast Connector
  • Wetted materials: Nickel Alloy 52, Ni-Span C, Viton, 304 Stainless Steel, Aluminum 6061, RoHSSolder, Loctite 680 (meets NSF61)
  • 1/8” NPT Female process connection


The AST5100 Wet - Wet differential pressure transmitter is your accurate pressure sensing device for low differential pressure. With a differential pressure range as low as 0 to 5" water column (12.5mbar), this product can be used to measure flow across an orifice, differential across a filter, tank level or gauge pressure. Using LVDT technology and AST's advanced electronics, the AST5100 delivers accurate, repeatable measurements.

The AST5100 Wet - Wet differential pressure transmitter provides accurate (±1.0% of FS) low pressure measurement with excellent repeatability. The AST5100 can be used with a wide range of liquids and gases including: water, natural gas, hydrocarbon fuels, air, and non-corrosive gases.

Applications for the AST5100 Wet - Wet Differential Pressure Transmitter

  • Liquid level control including bubbler systems
  • Climate control
  • Energy management
  • Air-fuel ratio including measurement for furnaces
  • Vapor recovery
  • Leak detection
  • Air or liquid filtration
  • Flow measurement


This product can be used in the following applications: