EXcell 241

NIR Biomass Sensor DN25

EXcell 241 is a high precision digital NIR-absorbance sensor for DN25-weld in sockets monitoring biomass measurement in biotech, food and pharma applications. It´s design made of stainless steel, it´s standard DN25 weld-in socket and wearless sapphire windows, it´s LED technology and the integrated digital amplifier makes them a reliable, robust, cost efficient and unique measuring device for typical industrial fermentation vessels.Different measuring units for absorbance, turbidity and mass like AU / OD / FAU / EBC or mg/l can be displayed or even a customer defined measuring unit can be chosen. The parametrizing software EXpert allows a comfortable and easy sensor parametrization. Also measuring values can be displayed graphically and can be stored and exported. There are different communication interfaces for USB, RS485 Modbus or for 0...20mA current output available. The sensor is attached to the weld-in socket via a G1 1/4" thread.The O-ring position can be freely selected according to the existing socket to allow the best possible sterile installation.

NIR-Absorbtionssensor EXcell241

Your advantages

  • EBC / FAU / mg/l / AU / OD or customer defined units
  • Design for DN 25 weld-in sockets
  • With integrated amplifier
  • No traditional transmitter necessary
  • Wearless sapphire windows, CIP-capable
  • Hygienic design, autoclavable
  • Maintenance free due to LED light source
  • PC-connection via USB, Modbus RS485 or 0…20 mA current output interfaces
  • Easy parametrization via EXpert software


  • Specifications

    Measuring range 0...6 AU, 0...6600 EBC
    Resolution 0,1 % or 0,01 AU
    Accuracy ± 1 %
    Reproducibility ≤ 1 % from final value
    Wave length 850 nm
    Light source LED
    Optical path length 5 / 10 / 20 mm
    Immersion length 70-85 mm / 110-125 mm
    Wetted material stainless steel 1.4435 (316L)
    Surface Ra <0.37 µm e-polished
    Measuring window sapphire
    Process connection thread G1 1/4" (DN 25)
    Process temperature 0...90 °C
    Process pressure max. 10 bar (150 psi)
    Electrical coonection Fischer Core Series
    Cable length 2 m / 5 m
    Interfaces USB, RS485 Modbus, 0...20 mA with switching output
    Protection class IP68
  • Dimensions

  • Applications

    • High accurate OD measurements up to 12 OD
    • Suitable for fermentation processes
    • Usable in industrial fermentation vessels
    • Cell growth measurement
    • Filter observation
    • Color independent concentration measurement
  • Downloads

Your direct inquiry

We are looking forward to hearing from you:

Exner Process Equipment GmbH
Carl-Metz-Straße 26

76275 Ettlingen

Telefon: +49 (0)7243-94 54 29-0
Fax: +49 (0)7243-94 54 29-99

E-Mail: sales@e-p-e.de