IR 5000
Inline Moisture Measurement with Infrared Technology
For the production of wood based panels, the moisture content of the material used is of utmost importance. The GreCon Moisture Analyser IR 5000 is an ideal measuring system, which provides the user with the necessary precise information about product moisture. The continual availability of product properties allows for easy adjustment of the production process to ensure a high standard of product quality.
Chips and fibres must be neither too wet nor too dry. Therefore the control of the moisture of the material is of utmost importance. If the material is too wet, reductions in panel quality and slower production speed will occur. If it is too dry, valuable energy is wasted. In addition the danger of fire and explosion in a dryer plant can increase.
The GreCon Moisture Analyser IR 5000 makes a homogenising of production processes possible and furthermore opens up the exploitation of important production reserves. The availability of the facilities and their profitability are increased.
You Benefit
Avoidance of faults produced due to wrong moisture
Non-contact measuring system, measurement
of chips/fibres
within bins/screw conveyors
through a glass pane
Best quality of measured values thanks to 7000 measurements per minute
The measuring system is supplied pre-calibrated
Construction of the IR 5000
Main constituent of the non-contact IR 5000 is the measuring head and an operator interface for calibration and parameterisation of the moisture analyser. The operator interface is installed near the measuring head where it is also used as an external display in the measuring position. This arrangement makes a reading of the measured value easy when taking samples for laboratory measurement. The measured values can be transferred to a higher-ranking process control system via a network connection to display the values in the control station.
Analog outputs and programmable alarm contacts are available for additional control tasks. The housing of the measuring head and operator interface is dust- and water-proof. For applications in extreme areas like freezing or hotness appropriate accessories are available.
Up to 80 different system adjustments can be stored in the product memory, which makes an adaptation to any material structure possible.
Combination with other Measuring Systems
To make the evaluation of the product or material features effective, the IR 5000 can be combined with other GreCon measuring systems. For example the datas of the GreCon Weight Per Unit Area Gauge BWQ 5000 can be used for calculating the dry mass of the chip or fibre mat.
Measuring Principle
The IR 5000 works with an optical measuring transducer. Light of the NIR region is used, which is absorbed by the material moisture. The wetter the material to be measured is, the less light is reflected by the material. A light beam, which is emitted by a halogen lamp, is divided into several measuring and reference beams by means of a mirror-lens combination.
The rays are led through a filter wheel to filter out the excessive spectral regions of the light. The remaining rays of the NIR region are projected onto the material to be measured. The reflected light, the intensity of which depends on the moisture content, is compared with the reference beams in the measuring head and used to calculate the material moisture.
Due to the division into several measuring reference beams and the dual-detector principle, a high system stability and measuring accuracy - independent of external influences - is ensured.
Manipulators for the optimal installation of the measuring heads
For closed conveyors, e.g. screw conveyor the moisture can be measured directly in the production process with the use of a glass pane.
The fibre measuring device is especially suitable to determine the material moisture in drop chutes such as underneath dryer cyclones in the MDF production process. With the IR 5000, the fibers are collected and measured in a special collecting basin. After each measurement, a flap mechanism is opened, and the measured fibres are returned to the production process. At the same time, new fibres are taken and measurement starts again. An integrated flap is included for sampling. With this GreCon measuring device it is for the first time possible to measure also freely falling material with infrared systems.
For measurement above fibre or chip mats before or behind the prepress a suitable holder is offered. This holder also allows adjustment of the measuring head during production in a calibration or maintenance position.
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Infomaterial
