Flow Sensor for Compressed Air and Gases

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  • Massflow


The EE771 is a thermal flow sensor for compressed air and gases. Irrespective of pressure and temperature, the EE771 flow meter registers mass flow, volumetric flow or standard flow.

  • EE771 mass flow sensor

  • EE771 mass flow sensor with remote sensor probe

  • EE771 mass flow sensor with measurement ball valve mounting

    The flow sensor can measure the consumption of compressed air, nitrogen, oxygen, CO₂, argon or other non-corrosive gases. The measurement ball valve permits easy installation and removal with only a short interruption of the flow.

    EE771 flow sensor employs the well proven E+E hot-film sensor element with high immunity to contamination, which leads to outstanding long-term stability and accuracy even under harsh operating conditions.

    With wide measuring range from 0.5 to 200 Nm/s (100...39370 SFPM) (1:400) and fast response time, one and the same flow meter model can be employed throughout the entire gas supply system. It records accurately even the smallest flow which represent an essential prerequisite for calculating consumption costs or for finding leaks.

    Every E+E flow sensor undergoes a precise factory calibration procedure at a pressure of 7 bar (102 psi), the corresponding calibration certificate is included in the standard scope of supply.

    The EE771 flow sensor is available with an additional MODBUS RTU or M-BUS (Meter-Bus) interface.

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    Key Features

    • Measurement ball valve for rapid installation and removal with only a short flow interruption
    • Remote, interchangeable probe for easy mounting
    • Pipe diameter DN15 - DN50 (1/2" - 2")
    • Pressure range up to 16 bar (232 psi) PN16
    • Wide measuring range up to 200 Nm/s (39370 SFPM)
    • Bus interface for MODBUS RTU or M-BUS

    Technical data

    Measured values
    standardized volumetric flow, mass flow, standardised flow, temperature, consumption
    Measuring range
    0.5 - 200 Nm/s (100…39370 SFPM)

    ±1.5 % of the measured value
    Pipe diameter
    DN15 up to DN50 (1/2" - 2")
    0-10 V, 0/4-20 mA, Pulse, Switch, Modbus RTU or M-Bus
    18 - 30 V AC/DC

    Calibrating your limits

    Your products and services can only be as precise as the tools you use to measure them. With more than 20 years of experience, the calibration team of E+E Elektronik focuses on providing a reliable service without any unnecessary delays or bias.

    Discover the value of working with an expert in calibration that prioritizes

    • accuracy,
    • fastness and
    • reliability

    Learn more

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    Downloads EE771


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