UV absorption sensor

UV absorption sensor
OUSAF44 ©Endress+Hauser

Sensor for inline product quantification

The OUSAF44 UV sensor monitors the concentration of your product in process liquids. Its outstanding filter performance ensures highest linearity and full consistency with lab results. This provides you with fast and reliable process information and increases the yield of your product. You also benefit from EasycalTM – the patented system for easy, liquid-free online calibration traceable to NIST. OUSAF44 is approved for hazardous areas (ATEX, FM) and suitable for hygienic processes (CIP/SIP).

  • Benefits

    • Fast and reliable monitoring of product concentration for better process control and simplified quality control

    • Precise measured values with full consistency to laboratory results

    • Patented EasycalTM system option for easy, liquid-free online calibration...

  • Field of application

    The OUSAF44 sensor measures the UV absorption for:

    • Measurement of protein concentrations

    • Chromatography control

    • Permeate and retentate monitoring

    • Concentration measurement of organic compounds

    • Aromatics detection

    • Filter monitoring

    With its international...

Features and specifications



  • Measuring principle

    UV photometric

  • Application

    Continuous measuring of the spectral absorption in the ultraviolet region

  • Characteristic

    Sensor for installation in the pipe with separate flow assembly OUA260

  • Measurement range

    0-2,5 AU,
    0-50 OD (depending on optical pathlength)

  • Material

    Sensor housing: stainless steel 316

  • Process temperature

    0-90 °C (34-194 °F)
    max. 130 °C (266 °F) for 2 hours

  • Process pressure

    up to 100 bar (depending on flow assembly OUA260)

  • Ex certification

    ATEX II 2G EEx d IIC T5
    FM Cl.1, Div. 1, Group B, C, D
    for lamp housing

  • Ingres protection

    IP65 (NEMA4)

Documents / Manuals / Software

Accessories / Spare parts

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