CMM 500 – High-precision measurement of the compressor’s free air delivery

The CMM 500 Compressor Master Meter is an innovative reference flow meter that has been specially developed for the high-precision measurement of free air delivery and for the billing of compressed air. The CMM 500 can be used both directly downstream of the compressor for measurement of wet compressed air, and as a compressed air meter for consumption measurement and billing for dry compressed air.

Its wide measuring span of 1:130 and a measurement accuracy of <0.5 per cent of the measured value (0.2 Qmax to Qmax) are unique.

Service and maintenance can be carried out at any time via the mounting plate (zero point correction, condensate drainage, sensor replacement for calibration), even whilst the system is in operation under pressure.

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Measurement technology advantages:

  • Measurement accuracy < 0.5%, confirmed by DIN EN ISO/IEC 17025 certification
  • Wide measuring span > 1:130
  • Very fast measurement, peak detection, no settling-in period as with ultrasonic gas meters
  • No long upstream straight runs required
  • Extremely low pressure drop, at max. flow < 70 mbar
  • Suitable for virtually all gases (by simply entering the respective gas density)
  • Pressure range up to 16 bar(g), 30 bar(g)/100 bar(g) on request
  • Direct display of standard volume in Nm³, Nm³/h, in accordance with DIN 1343 or ISO 1217 compressed air standard
  • Additional measured values: temperature in °C or °F, pressure, differential pressure in bar, psi, etc.
  • All standard output signals: Modbus RTU, Modbus TCP, Power over Ethernet (PoE), MBus, 4…20 mA
  • ATEX product version for highly flammable and combustible gases currently in development
CMM 500

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