HCS Grain Drying Control
GrainWatch™ HCS Grain Drying Control System was introduced in 1980 and has since then been upgraded many times to fit the digital standards of today. HCS is a helpful tool for continuous flow dryers to fine-tune drying cycles and enhance output quality.
GrainWatch™ HCS Grain Drying Control can be installed in nearly every continuous flow grain dryer, from small farm size to large industrial. The system consists of Sensor HCS 4/3, Signal Amplifier HCS 200, and Control Unit HCS GDC D1.
The HCS Sensors
The sensors are easily installed without the use of tools at the bottom of the drying zone and continuously measure the moisture content in the commodity being dried. The placement of the sensors is important to achieve optimal drying results, and multiple sensors may be needed depending on the size of the dryer.
The HCS Signal Amplifier
Each HCS Signal Amplifier has a 4-20mA output, which can be integrated into existing PLC:s. Values are passed on via the Signal Amplifier to the Control Unit, which is used to regulate the feed-out intervals and speed.
The HCS Control Unit
The HCS Control Unit is used to regulate the drying cycles. Once the optimal feed-out intervals and speed are found, the Control Unit can be set into auto-mode and dries the remaining batch at the same setting. Control Units are available for volumetric extraction, shaker extraction and conveyor extraction.