The CMM 500 Compressor Master Meter is a new type of reference flow measuring device that has been specially developed for high-precision measuring of the capacity of compressors and for billing compressed air. The CMM 500 can be used both directly downstream of the compressor for measuring wet compressed air and as a compressed air meter for consumption measurement and billing of dry compressed air.

The large measuring span of 1:130 and an accuracy of <0.5 % of the measured value (0.2 Qmax to Qmax) are unique.

Service or maintenance can be carried out at any time via the mounting plate (zero point correction, condensate drain, sensor replacement for calibration), even during operation under pressure.