Process Control Instruments, Field Devices and Industrial Automation
SKU# (321)

ENDRESS+HAUSER  OUSAF21-D0C0D1D1D1A1A




ENDRESS+HAUSER OUSAF21-D0C0D1D1D1A1A (1)
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EH OUSAF21 Optical sensor for the measurement of low color concentrations in water. 390-1100 nm wavelength range. Embedded validation filter. Female NPT Process Connection. 0,75" nominal diameter. FM and ATEX approvals.

Part# with Options:        OUSAF21-D0C0D1D1D1A1A
Price with Options:        Please Email us your request for quote   

Options:    

Wavelengths combination
(1) Wavelengths combination for EH OUSAF21
Lamp
(2) Lamp for EH OUSAF2X
Lamp Approval
(3) Lamp Approval for EH OUSAF21
Optical Pathlength (OPL)
(4) Optical Pathlength (OPL) for EH OUSAF21
Window Material
(5) Window Material for EH OUSAF21
Sealing Material
(6) Sealing Material for EH OUSAF21
Air Purge
(7) Air Purge for EH OUSAF21

  Availability 2 Weeks  ]

Optical sensor for the measurement of low color concentrations

Application

The sensor is used to measure color concentrations in the low measuring range of the visible electromagnetic spectrum.

  • Color scale measurement: APHA/Hazen, potassium permanganate in water
  • Measurement of color concentration
    • Outgoing goods inspection/purity monitoring
    • Color assurance
    • Discoloration control
    • Distillation monitoring
Your benefits
  • As slightest color changes are detected, production quality is guaranteed
    • Measuring range up to 2.5 AU or 50 OD (depending on optical path length)
    • Can be configured to measure color concentration at discrete wavelengths in the visible regionregion
  • Outstanding filter properties for highest linearity
  • Direct concurrence with laboratory values
  • Integrated reference detector for the compensation of particles, bubbles and lamp aging
  • Incandescent lamp for long service life and stable measured values
  • Cost-effective, time-efficient verification (liquid-free)
  • FM and ATEX approved lamps for applications in the hazardous area
  • Broad variety of window materials and seals for resistance to a wide range of process media
  • Optional air purge ports to prevent the formation of condensate on the optical windows
  • Measuring principle

    The measuring principle is based on the Lambert-Beer law.

    There is a linear dependency between the absorption of light and the concentration of the absorbing substance:

    A = -logA m = ε . c . OPL
    A ... absorption, A m ... absorption measured by detector
    ε ... Extinction coefficient
    c ... Concentration
    OPL ... Optical path length

    A light source emits radiation through the medium and the incident radiation is measured on the detector side.

    A beam splitter splits the light into two beams. One beam is used for measuring while the other acts as a reference to compensate for particles, bubbles and lamp aging.

    Once the light has passed through a filter for wavelength selection, the intensity of the light is determined by a photodiode and converted to a photocurrent.

    The subsequent conversion to absorbance units (AU, OD) is performed in the associated transmitter.


    • OPTICAL ANALIZERS > ASSEMBLY
      OUA260-BA1B04D1A1A EH OUA260 flow assembly for absorption, color and turbidity measurements with OUSAFXX and OUSTF10 optical sensors. Ultra-hygienic design...



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