Compressed air is an indispensable component of almost every manufacturing operation. But initially it usually comes out of the piston compressor oily and damp. The drying and cleaning is controlled by an INSEVIS S7 panel PLC developed specifically for this purpose with flexibly configurable onboard peripherals; temperature inputs, current inputs and outputs and some digital inputs/outputs including relay outputs - all integrated in an S7 CPU with touch panel for heated adsorption dryers like this one from Airfilter Engineering in Malaysia. Their applications are spread all over the world, like this picture taken in a plant in Malaysia. For Airfilter Engineering, Made in Germany means reliability, compactness and still an excellent price-performance ratio for the end customer. And on the other hand, S7 compatibility and the use of Siemens programming tools for the developers.