HK4 NIR spectralyser


Measurement of up to 4 organic components

  • simultaneous online- measurement of up to 4 organic components (e.g. fat, water, protein, connective tissue protein)
  • specially developed NIR (Near Infrared) technology with diode array and therefore the first online NIR- spectrometer.
  • modular setup of evaluation unit and halogen sensor
  • transmission or reflection halogen sensor
  • no drift of the measurement values through aging of the lamps
  • independent of color changes
  • no moving parts

The HK4 is an NIR- (Near- Infrared) In- Line measurement device with state- of- the- art technology. Which can measure all organic components in solids like meat and in liquids with different viscosities like milk, oil.

The HK4 can be installed at pipelines, tanks / vessels, cutters, mincer, etc..

With only one measurement you can measure simultaneously valuable components like fat, protein, lactose, solids content, etc. for the dairy industry and fat, protein, collagen, water, etc. for the meat industry.

Through the modular construction (Sensor and evaluation unit are separate), the sensor can be installed at a difficult accessible places. This ensure the easy handling.

With the easy to use calibration function (calibration button), our customer can take spectra's at the device and read the internal stored spectra's with the calibration software. Due to this function and the open calibration system our customers can expand independent an existing calibrations or create new calibrations.

No moving parts in the optic:

The Harrer & Kassen GmbH uses in his HK4 and in his laboratory measurement devices an NIR (Near- Infrared) Diode- Array detector (Spectrometer) with thermoelectrically cooling, this is necessary for an optimum Signal-to-Noise ration, even under rugged application conditions.
Spectral area
The product will be irradiated with a special developed halogen lamp. The resulting diffuse reflection (the diffuse reflection contains the necessary information of the constituents) is transmitted via a fiber optic to the spectrometer. The spectrometer split the spectra in 256 support points.

Through the splitting of the spectrums, can we select with our calibration software the optimum wavelength rang for each component.

Depending upon operational area different sensors are available.

Technical data:
Measuring procedure NIR spectrometer with diode array
   Size LxWxH
stainless steel housing
600 x300 x 167mm
IP65 / NEMA 4
   Power supply
   6 analog outputs
   1 Relays contact
   Temperature sensor
   PC interfaces
   Digital inputs

85-265V AC, optional 24V C
0/4 - 20 mA
max. 5A / 230V
PT 100
RS 232 or RS 485
Ext. Start / Stop
User interface

6 integrated soft keys in keypad
2 x 24 characters illuminated
Sensors NIR-Sensor reflection
NIR-Sensor transmission
Software Chemometric Software Specter
Ambient conditions
   Environment temperature
   Product temperature

-20°C to +40°C
 >0°C to +70°C
Flyer HK4

Harrer & Kassen GmbH
Am Heschen 4-6
D-75328 Langenbrand
Tel:     +49 (0)7084/9248-0
Fax:   +49 (0)7084/9248-29
eMail: info(at)

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