Suction pressure Controls upm to eight outputs fo single or multi-stage compressors Pressure control with two setpoints for energy saving Rotation of compressors and equalisation of total operating time Limitation of starts System and compressor diagnostics Storage of ten alarms Automatic maintenance management Alpha-numeric display with four selectable languages Connection to supervisor PC. Applications : for cryogenerators in supermarkets,warehouses and all cryogenic systems with variable requirements. Order example : COPS80IEA, 1 or 2 COPM28E modules,PGT8 transmitter.