HVAC Miniature Air Flow Probe

EE671 is a compact air velocity probe for HVAC applications. The built-in flow sensing element VTQ combines the advantages of state-of-the-art E+E thin-film manufacturing and of the newest transfer molding technology.

Inquire now

It operates on the hot-film anemometer principle and ensures high accuracy and reproducibility as well as long-term stability and outstanding resistance to pollutants.

EE671 is available with fix installed cable or with plug connection. The measured air velocity up to 20 m/s (4000 ft/min) is available at voltage output 0 - 1 V, 0 - 5 V or 0 - 10 V or on the Modbus RTU interface.

The alignment nut on the probe and the matching mounting flange simplify the installation, the correct orientation in the air flow and the precise control of the immersion depth.

With an optional configuration kit the user can set via a digital setup interface the output configuration and perform an adjustment of the probe.

Typical Applications

  • Heating and ventilation systems
  • Flow monitoring and control
  • Inlet air monitoring in ovens

You want to know more about our products?
We are looking forward to help you.

Sigma 05 - Modular Sensor Platform

The EE671 is compatible with the Sigma 05 host device of the E+E Modular Sensor Platform. Together they become a versatile, plugand-play RH / T modular sensor with analogue outputs and optional display. Besides EE072, Sigma 05 accommodates also other E+E intelligent sensing probes. See for further details.

Key Features EE671

  • High accuracy and long-term stability
  • Outstanding resistance to contamination
  • Easy and quick mounting
  • User configurable

Technical data EE671

  • 0...5m/s (0...1000ft/min)
    0...10m/s (0...2000ft/min)
    0...15m/s (0...3000ft/min)
    0...20m/s (0...4000ft/min)

    Measuring range
  • 0.5... 5m/s: ±(0.2m/s (40ft/min) +3% of MV)
    1... 10m/s: ±(0.3m/s (60ft/min) +4% of MV)
    1... 15m/s: ±(0.35m/s (70ft/min) +5% of MV)
    1... 20m/s: ±(0.4m/s (80ft/min) +6% of MV)

  • 0-1/5/10 V (max. 1 mA)
    Modbus RTU

  • 10-29V DC SELV


You want to know more about our products?
We are looking forward to help you.


  • How can I clean the air velocity sensing element?

    Due to its design and materials, the E+E thin film sensing element for air velocity is highly insensitive to pollution. When operaten in very dusty or diry environment, cleaning might be necessary. See section maintenance at

  • How can I replace the air velocity sensing element or the air velocity sensing probe?

    This is not possible. Return the device to E+E for service.

  • What kind of calibration certificate is included in the standard scope of supply of the E+E air velocity sensors?

    The standard scope of supply of E+E air velocity sensors includes an inspection certificate according DIN EN 10204 - 2.2 or DIN EN 10204 - 3.1, depending on the model. Please see the product data sheet and operation manual for the type of certificate. For details on calibration certificates please see page 5 in

  • Can E+E supply an accredited calibration certificate with the air velocity sensor?

    Accredited calibration certificate for air velocity is available upon request, please see our calibration website

  • What is the difference between a 2 wire and a 3 wire current output?

    Transmitter with "two-wires" technology receive the power from the process, and the signal is carry on return wire (closed current loop). With technology "three-wires" the power supply is separate from current output: 2 wires are the power supply and third carry the signal.

You want to know more about our products?