Fischer ME71 – Ceramic membrane pressure transmitter – HART, display

Fischer ME71 is high accuracy pressure transmitter with rugged silicon ceramic membrane based measuring sensor. It is equipped with microprocessor based electronic module for high accuracy, with LCD display, high vibration & shock resistant. ME71 offer analog signal output as well as HART interface, for measuring value readout and instrument setup.

It is suitable for aggressive liquids and gases eg. waste water, effluent discharge, breweries discharge, industrial water etc.


Fischer ME71 – high accuracy, microprocessor based, HART output, Pressure transmitter (Also Ex proof)

pdf-imagehigh accuracy, microprocessor based electronic, rugged silicon capacitance sensor, HART and analog signal output, LCD display, onsite via HART interface
Make: Fischer Messtechnik (Germany)
Model: ME71


Fischer ME71 pressure transmitter is based on highly sensitive capacitance type sensor. The instrument combines with highly advanced modern processor technology, to offer highest accuracy.

Fischer ME71 - rugged capacitance sensor, microprocessed based high accuracy pressure transmitter
Fischer ME71 – rugged capacitance sensor, microprocessed based high accuracy pressure transmitter

It is ideally suited for measuring positive and negative gauge pressure in applications where high degree of accuracy is required. It is also available in explosion proof version for use in hazardous (gas and dust explosion) locations.

Working Principle:

Fischer ME71 pressure transmitter is based on silicon capacitance sensor with bridge measuring circuit, the output of which change when the pressure changes.

Silicon capacitance pressure sensing element is manufactured under stringent controlled conditions. This sensor is rugged, fatigue and overload resistant and unaffected by pressure fluctuations.

Modern microprocessor technology is used to convert the bridge output to standard analog 4~20mA signal, which permit the measured value to be transmitted over long distances. A HART interface is also available using optional communication module installed in the transmitter housing.

With HART interface, digitally transmitted pressure measurements as well as transmitter setup data can be read very accurately. Also, terminal device can be used to re-configure the transmitter setup parameters, locally or from a remote location.


Key Features:

  • Robust and wear-resistant measuring sensor cell
  • High corrosion-resistant
  • High degree of functionality
  • Excellent long term stability
  • Low hysteresis
  • Unaffected by fouling of pressure chambers
  • High sensitive capacitance type silicon sensor
  • Microprocessor technology

Key Specifications:

  • Measuring range:
    • 0 ~ 130 mbar to 0 ~ 1.3 bar. Max. static pressure: 5 bar
    • 0 ~ 500 mbar to 0 ~ 5.0 bar. Max. static pressure: 15 bar
    • 0 ~ 3.0 bar to 0 ~ 30.0 bar. Max. static pressure: 90 bar
    • 0 ~ 10.0 bar to 0 ~ 100.0 bar. Max. static pressure: 150 bar
  • Linearity: < 0.1%
  • Hysteresis: < 0.1%
  • Temperature coefficient: < 0.5% / 10K
  • Operating ambient temperature: -10° C ~ +70° C
  • Operating media temperature:  0° C ~ +80° C
  • Protection class: IP67
  • Electrical connection: internal terminal block
  • Pressure connection: 1/2 ” NPT (F) threaded socket
  • Materials (media contact): stainless steel 316L (1.4404)
  • Material (housing): aluminium (surface coated)
  • Seals: viton, optional: teflon
  • Power supply: 24 VDC
  • Output signal: 4~20mA, optional: HART interface using communication module
  • Display: analog display with 0~100% scale
  • Compliance: CE Marking, EMV EN 50082-1, EN 50082-2


Industrial areas:

  • Process engineering
  • Environment engineering
  • Renewable energy eg. biogas etc
  • Waste Water Engineering
  • Effluent treatment
  • Breweries, alcohol industry