Fischer FB39 – Online Flow Transmitter – Aggressive media, liquids

Fischer FB39 is rugged, chemical resistant, online flow transmitter / monitor for continuous flow volume and speed, of all aggressive liquids including electroplating media, waste water, chemicals, industrial effluent, water treatment etc.

It can be integrated with PLC / SCADA system via its industry standard, linear analog output.


Fischer FB39 – flow (velocity, volume) transmitter – aggressive media

pdf-imageflow volume, speed continuous and online monitoring of all aggressive liquids and media
Make: Fischer Messtechnik (Germany)
Model: FB39


Flow transmitter FB39 is based on the differential pressure principle with integrated orifice and ceramic pressure sensors, housing and process connection made from high quality plastic.

The flow transmitters in this series are suitable for diverse measuring tasks in electroplating and in treatment plant for drinking, potable, process and waste water.

The instrument can be used for volume flow, flow velocity monitoring of all aggressive liquids and media.

Fischer FB39 - Flow transmitter for aggressive media - waste water, effluent, acids, electroplating
Fischer FB39 – Flow transmitter for aggressive media – waste water, effluent, acids, eletroplating

 Working Principle:

Flow transmitter FB39 measuring section consists of an orifice with differential pressure tapping assembled with two pressure sensors and electronic module.

The flow dependent differential pressure arising at the orifice is measured by two pressure sensors and converted into a standard electronic signal.

Chemical resistant plastics for the components in contact with the measured medium and the pressure sensors made from highly ceramic enable use in plants with aggressive media.

Key Features:

  • Robust design
  • Resistant against aggressive media
  • Measuring cell made from 99.6% AL2O3 ceramic (coated)
  • Compact design
  • No moving parts
  • Flow-proportional output signal
  • Plant pressure possible as second output signal

Key Specifications:

  • Measuring range: 0.75 ~ 3.0 m3/hr to 10.0 ~ 40.0 m3/hr
  • Nominal size: 15 DN ~ 63 DN
  • Connection thread (inch): G1 ~ G3
  • Accuracy: ± 3% within the calculation point, 80% of the max flow
  • Ambient temperature, continuous media temperature: 0 ~ 60° C
  • Pressure range: 3 bar static
  • Differential pressure: 600 mbar
  • Electrical connection: 4 pole standard plug to EN 175301-803-803-A
  • Display: 4 digit LED
  • Protection: IP65 to EN 60529
  • Material, wetted part: PVDF / Viton
  • Housing: Polypropylene PP, Polyvinylidene fluoride PVDF
  • Power supply: 24 VDC
  • Output signal: 4-20mA, root extracted, 2- wire
  • Zero point / measuring range: temperature error band over the whole temperature range.

Application areas:

  • Flow volume and speed monitoring
  • Flow / metering system

Industrial areas:

  • Marine, shipping
  • process industries
  • paint, chemical
  • Oil & gas
  • water treatment
  • waste treatment
  • sewage plant
  • refrigerant
  • automobile