How to choose a pressure transmitter? 

The pressure sensor should be chosen based on the fluid to be measured and the conditions of service of the application. It is necessary to define:

  • The fluid to be measured such as air, gas, steam, water or other liquid and its characteristics (density, viscosity…)
  • The fluid process operating conditions:
    • the pressure
    • the temperature
    • the corrosion
  • The measurement type:
    • pressure measurement
    • flow measurement
    • level measurement
    • density measurement
  • The type of pressure to be measured (relative pressure, absolute pressure, differential pressure)
  • The pressure measurement range
  • The measurement dynamic (rangeability) : the difference between the smallest measured value and the highest measured value
  • The measurement accuracy
  • The measurement response time
  • The mechanical interface or the process connection (screwed, flanged)
  • The output signal: analog and/or digital
  • climate environment and associated constraints
    • the ambient temperature
    • the relative ambient humidity
    • the dust content
    • the corrosive gas content
    • the waterproofness and IP tightness level
  • The industrial environment, associated constraints existing regulations
    • the use in explosive atmosphere and areas
      • the dust
      • the explosiveness
    • the electromagnetic waves (CEM)
    • the vibrations

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