Harrer & Kassen  HK8

  

NIR-H2O-Meter
Continuous online moisture measurement

  • newest NIR-LED technology
  • no mechanically moved parts
  • specially designed for measuring of bulk material
  • the measured surface can be smooth, planar or bulk material
  • Colour has no influence on the measured signal
  • no wear of lamps due to LED technology
  • no maintanance
  • easy to use calibration software


The HK8 is a continuous NIR reflection measurement with illumination infrared LEDs. The NIR-H2O-Meter is a modular unit, evaluation and sensor system are mounted in different housings. This makes the installation very flexible.
The evaluation takes place in different peak areas. The distance between sensor system and product is appr. 200mm.

The measured value of the H2O content is available as digital and analogue value.

Advantages
In contrast to conventional IR- or NIR-systems of the competition, the HK8 is not equipped with colour filters or halogen bulbs. The used LED illumination cares for an improved stability with a lifetime of 10 years.

Measurement Design
The sensor system is located 200mm over the to be detected product surface. The product surface can be smooth and planar, but also bulk material. The products (i.e. cement, plastic granulate) are moving on a conveyor belt under the sensor system. The environment has to be dust-free.
Messprinzip


Applications
The number of feasible applications from today's view is limited to bulk material in the primary and construction industry.
Conceivable applications:

  • Plastics industry
  • Primary industry
  • Construction industry
  • Cement
  • Gravel
  • Coal
  • Granitic sand
  • Clay
  • Plastic granulate

Calibration
The calibration of the HK8 is done with our easy to use Specter8 software.

HK8-Versions
HK8-1: Basic wavelength area with 1 calibration
HK8-2: Medium wavelengh area with 1 calibration
HK8-3: High wavelengh area with 1 calibration
HK8-18: Basic wavelength area with 8 switchable calibrations
HK8-28: Medium wavelengh area with 8 switchablecalibrations
HK8-38: High wavelengh area with 8 switchable calibrations


Configuration:

Housing:
   Size HxWxD
   Enclosure
   Color
aluminum pressure casing housing
230 x 280 x 110 mm
IP65 / NEMA 4
RAL 5024

Connections
   Power supply
   4 analog outputs
   2 PC interfaces
   Sensor


100-240V AC
0/4 - 20 mA
RS 232 oder RS 485
Illumination with infrared-LEDs
User interface
   Operating
   Monitoring

6 soft keys in integrated keypad
2 x 24 characters in illuminated display
Ambient conditions
   Environment temperature
   Product temperature

-20°C - +85°C
 >0°C - +130°C


Further Harrer & Kassen NIR devices:
HK4, HK3,