HK8

The HK8 NIR-LED-H2O-Meter is an innovative and extremely reliable measuring device for continuous moisture measurement of bulk materials based on NIR reflection measurement with LED illumination. It is particularly suitable for measuring water content in various industrial applications and is characterized by high precision, durability and minimal maintenance requirements.

Features at a glance
  • Continuous moisture measurement through NIR reflection measurement
  • NIR LED technology for improved measurement stability
  • No mechanically moving components
  • Color differences and color changes on the product have no influence on the measurement
  • Maintenance-free with an LED service life of at least 10 years
  • Modular design: sensor and evaluation unit are separate and can be installed up to 50 meters apart
  • Simple calibration with the Specter8 software
  • Up to 8 calibrations can be stored in the device
  • Output of measured values via digital RS232 (optional RS485) interface or analog (0/4-20mA)

Product description

The HK8 NIR-LED-H2O-Meter uses a unique NIR-LED technology to precisely measure the moisture in various materials. The device works on the principle of reflection measurement, in which the diffuse NIR light analyzes the water molecules in the product. It is particularly noteworthy that the HK8 does not use color filters with a filter wheel or halogen lamps, which results in a more stable measurement. The drifting of the measured values, as is often the case with other NIR systems, is fully compensated.

Thanks to its modular design, the HK8 can be used flexibly, whereby the sensor and the evaluation unit can be installed separately. This enables installation even in places that are difficult to access. The sensor is installed above a wide variety of products to be measured, such as bulk materials (sand, cement, gypsum, etc.), textiles or paper webs.

The Specter8 software enables simple and user-friendly calibration. Up to 8 calibrations can be stored in the device, which increases the versatility of the device for different applications.

What sets the HK8 apart

High measurement stability

Thanks to NIR LED technology without color filters or halogen lamps.

Long service life

LEDs have a service life of at least 10 years, which minimizes maintenance costs.

Independent of color changes

Color differences on the product do not affect the measurement result.

Versatility

Suitable for coarse bulk material, paper webs and textiles.

Easy handling

Calibration is carried out quickly via the Specter8 software.

Technical data

Measuring method
Type of procedure:

NIR reflectance measurement with LED illumination

Assembly technology

Die-cast aluminum housing:

180 x 180 x 100 mm or 
230 x 200 x 110 mm

Protection class:

IP65 / NEMA 4

Connections

Power supply:

100 – 240 V AC optional 24 V DC

Analog outputs:

2x 4 – 20 mA

PC interfaces:

RS 232 or RS 485

PROFI-BUS-DP:

optional
User interface

Operation:

6 softkeys integrated in the membrane keypad

Display:

2x 24 characters with backlight

Temperature ranges

Ambient temperature:

-20 °C to +50 °C

Product temperature:

depending on the application

Sensors

Downloads

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