Digital Differential Pressure Gauges

The series A1 Digital Differential Pressure Gage is a patent pending microprocessor based digital pressure gauge for positive, negative, and differential measurement designed to be a direct replacement for mechanical gauges. The Series A1 differential pressure gauges utilize an extremely stable piezo resistive sensing technology to give a standard full scale accuracy of 1%. For applications requiring better accuracy, the A1 is also available with 0.5% accuracy. The A1 pressure gauge also has an optional 4-20 mA output for applications requiring an output signal. The A1 features a bright ½” LED display, which gives the gauge improved readability and precision. The A1 digital differential pressure gauges also feature 5 user selectable engineering units including in. w.c., mm w.c., cm w.c., kPa, and Pa. The Series A1 offers an improved look, and performance compare to mechanical gauges for a similar price.

Maximum Pressure:

  • 4″ w.c. and less = 2 PSI; 5″ w.c. and above = 10 PSI
  • Media compatibility:
  • Air and compatible non combustible, non corrosive gasses
  • Accuracy*:
  • Axxx0-xx – 1.00%; Axxx1-xx – 0.50%; Axxx2-xx – 0.25%
  • Temperature Ranges: Compensated and Operating:
  • -10° to 140°F (-23° to 60°C)
  • Thermal Effect*:
  • /- 0.012% FS/°F
  • Output Signal:
  • 4-20 mA (option)
  • Loop Resistance:
  • 750 Ω Max (for internally sourced power); 1800 Ω Max
  • (for externally sourced power of 36 VDC)


  • Universal 24-240 VAC or VDC
  • Housing Material:
  • Glass Filled Nylon
  • Enclosure Rating:
  • Designed to meet NEMA 4X face; with optional
  • cover the entire product is weatherproof


  • Color: Black
  • Pressure Range: 0-100Mpa
  • Diameter:100mm

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