Dryer Controls
Dryer Controls Are Growing Up
It used to be that the only place advanced drying controls were used was in central conveying systems. Sure, there were microprocessor controls for dryers that had varying numbers of characters on liquid crystal displays or vacuum fluorescent displays and LED's, but the more sophisticated controls were generally developed for conveying systems with multiple receivers, pumps and material selection devices.
Most small dryers still use very basic controls - though they are much more reliable than their predecessors - and we will show some of them here - but newer types of dryers demanded a wider range of functions be monitored and controlled. Consider, for instance, the desiccant wheel dryers with advanced energy-saving designs, or the complexity of the infrared rotating drum dryer/crystallizers used by many PET processors. Dryer manufacturers have responded with controls that even a conveying systems engineer can admire. The more sophisticated controls are generally much more "user friendly" and provide a pictorial interface. The color versions can provide information based on both the icon and its color.
Touch screen control interfaces make dryer operation simpler, faster, and error-proof, even with complex drying sequences.
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