Fischer DE13 – Fluid-filled Differential Pressure Transmitter

Fischer DE13 is rugged, chemical resistant, industrial differential pressure transmitter for monitoring differential pressure, absolute pressure and partial vacuum. It is suitable for corrosive, aggressive, chemical active liquids and gases etc.

With its unique liquid filled measuring chamber, it can be employed in any type of industries including pharma, chemicals, water treatment, HVAC building etc.


Fischer DE13 – Liquid filled Differential Pressure  Transmitter pdf-image

KTA compliant, Industrial DP Transmitter for liquid, gases etc for nuclear power plants etc.
Make: Fischer Messtechnik (Germany)
Model: DE13

Fischer DE13 is state-of-art, accurate, robust and chemical resistant differential pressure transmitter. It has uniquely designed liquid filled pressue damped measuring chamber.

It is suitable for application with any aggressive or non-aggressive media, liquids, gases and vapours.

Fischer DE13 - Liquid filled, corrosion resistant DP Transmitter
Fischer DE13 – Liquid filled, corrosion resistant DP Transmitter

Working Principle:

The measuring pressures are applied on an outer flexible stainless steel isolating diaphragm. These pressres are then transferred to the sensing diaphragm by the pressure transfer fluid.

When both applied pressures are equal on both sides of the sensing diaphragm, it is at zero position. Pressure difference across the sensing diaphragm causes it to deflect away from the higher pressure side, resulting in linear displacement of the LVDT core. This displacement is sensed by the LVDT’s coils, and converted by an electronic module to an output signal proportional to the differential pressure.

Inward deflection of each isolating diaphragm is limited by the intermediate plate behind it. This also limits the pressure that can be transferred to the sensing diaphragm. Thus, all three diaphragms are fully protected against excess differential pressure in either direction, and also against high static pressures.

Key Features:

  • Rugged, wear  & tear resistant sensor design
  • High corrosion resistant
  • Rinsable pressure chambers
  • Low hysteresis
  • Unaffected by vibration, radiation, dirt etc

Key Specifications:

  • Measuring range:  0 ~ 40 mbar to 0 ~ 25 bar
  • Nominal pressure: 100 bar
  • Maximum static pressure: 100 bar
  • Maximum pressure load: overpressure safe up to maximum static operating pressure
  • Linearity: < 1% Full scale
  • Ambient temperature: -10 °C to +60 °C
  • Output: analog 0/4-20mA
  • Display: 3 1/2 LCD Display
  • Pressure chamber, diaphragm (isolating / sensing): Chrome-nickel-steel 1.4404 (AISI 316L – in contact with medium)
  • Measuring membrane: Nickle-Beryllium / Duratherm
  • Protection: IP65 as per EN 60529

Application areas:

  • Filter condition monitoring
  • Flow measurement and control
  • Pump Control

Application areas:

  • Nuclear power plants
  • Manufacturing and chemical plants
  • Marine, shipping application
  • Onshore and offshore area
  • Petrochemical, solvent industry
  • Sewage, effluent treatment plants