Testo India Pvt. Ltd.
Testo India Pvt. Ltd.


Air Flow Meter

Humidity Temperature Measuring Instrument
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Model ID: Testo 6440

Testo 6440: Compressed Air Counters used to measure, monitor and record compressed air consumption. It measures the standard volumetric flow rate in Nm³/h or Nl/min, consumption quantity in Nm³; media temperature in °C




  • 2 Output signals(listed below) are enabled for selection at the same time:
    • Analog output, 4 to 20 mA (4-wire)
    • Pulse output
  • Easy operation using just 2 control buttons
  • Design with inflow stretch
  • 2 programmable switch signals(dependent on consumption or volumetric flow rate, time-based or non time-based, NC or NO contact, hysteresis, window)
  • Provides reliability and accuracy in installed state as well

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