Company : Harrer & Kassen

Category : Test and Measurement

Key Products : Consistency, Moisture Measurement, Design Measurement and Colour Measurement 

Harrer & Kassen GmbH are specialists in developing, manufacturing and distributing high performance process measurement instruments based on microwave and NIR technologies. We have over 25 years experience in developing and manufacturing process measurement instruments.

 

All Harrer & Kassen GmbH instruments are modular units; evaluation and sensor system are mounted in different housings. The measured value of the instruments are available as digital (RS232, optional RS485) and analogue value (0/4-20mA).

Pulp Consistency Meters

We have two instruments for consistency measurement, the HK1 Mp with microwave technology and the HK8-MINI with NIR technology.

 

The consistency measurement instrument is suitable for measuring the concentration of pulp. During the craft cooking process (dissolving the lignin from the wood fibers) the instrument measures the concentration over the entire range. Process parameters like grain size, fiber length or colour do not influence the measurement. The instrument delivers a linear 0/4mA-20mA signal, which is proportional to the measured concentration.

 

The HK1 Mp standard flange is DN80 PN6 and allows a simplified installation on vessels or large diameter pipes, any other flange sizes are available on request. For measuring on pipes we have flow cells available for any size pipe diameter.

 

The HK8-MINI sensor is either completely inserted into the product (flange in large pipes or a tank), or attaches through a sight glass. Depending on customer requirements, the fitted sight glass or HK8-MINI sensor can be equipped with borosilicate glass or sapphire.

Moisture Measurement

Moisture measurement device, HK8 is used for continuous NIR reflection measurement with NIR LED's.

The sensor is installed on a paper web before the paper drying process. Through the determination of moisture content, the temperature of the drying process can be optimized. Through the optimization of the temperature in the drying process, energy costs can be cut. To keep the sensor clean in a dusty environment, the Harrer & Kassen GmbH developed an air purge cyclone.

Consistency Measurement

  • Continuous online moisture measurement
  • No moving parts
  • Specially designed for continuous online measuring of moisture measurement / TS in liquid products in pipes or tanks
  • In large pipes or tanks the sensor is penetrating the product. On small pipes the sensor is flanged on a sight glass
  • Colour has no influence on the measured signal
  • No Maintenance
  • Easy to use calibration software

 

Applications:

 

The HK8-mini is a complimentary instrument to our microwave moisture measurements (or dry solids) in pipes and tanks where our microwave measurement won't work due to different disturbances (salt, PH value...)

 

The HK8-mini is a device for continuous NIR reflection measurement with infrared LED's. The NIR-H2O-Meter is a modular unit, evaluation and sensor system are mounted in different housings. The distance between the sensor and the evaluation unit can be up to 50 meters.

 

The HK8-mini is a further development of our proven HK8. It was specifically designed to dive into large pipes or to be flanged via a sight glass on a small pipe.

 

The measured value of the H2O content is available as digital (RS232, optional RS485) and analogue value (0/4-20mA).

 

In contrast to conventional IR- or NIR-systems of other suppliers, the HK8-mini 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 is either completely inserted into the product (flange in large pipes or a tank), or attaches through a sight glass. Depending on customer requirements, the fitted sight glass or HK8-mini sensor can be equipped with borosilicate glass or sapphire.

Goods Receipt Inspection

The HK9 is equipped with state of the art microwave technology and due to the robust and modular design is the HK9 particularly suitable for the measurements of moisture and density at bulk cargo and bale on a conveyor belt.

 

At the goods receipt inspection, the HK9 detect how many percent of water is inside the paper bale. With this information you can check the information from the supplier, and gives there diverseness you can negotiate a new price.

 

At the quality control can be ensured, that you produce a consistently high level of quality. If you receive a complaint, you can show through the recording with which quality the product leaves the factory.

Colour Measurement HK7

The HK7 enables a continuous colour measurement in the current production, based on the standard CIELab or ICUMSA- standard. The online specific colour measurement or deviation from the desired value of the desired colour is displayed and issued as analog value. Conditions for an accurate measurement is a product with smooth and planar surface plus the distance between sensor system and product has to be kept constant.

Contact Details

Harrer & Kassen GmbH
Am Heschen 4-6
75328 Schömberg – Langenbrandu
Germany
Tel: +49 (0)7084 9248-0
Fax: +49 (0)7084 9248-29
Email: info@harrerkassen.com
URL: www.harrerkassen.com

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