Questions about our products?

The EE660 air velocity sensor operates on the hot film anemometer principle and is optimised for precise measurement of very low air velocity in laminar flow monitoring and clean room applications.

EE660 employs E+E air flow sensors manufactured in thin film technology, which stands for excellent accuracy and long-term stability down to 0.15 m/s (30 ft/min). The device is available with current and voltage output or with RS485 interface an Modbus RTU or BACnet MS/TP interface.

EE660 is user configurable and adjustable with jumpers on the electronics board or with the EE-PCS Product Configuration Software.

Key Features 

  • Accurate measurement down to 0.15 m/s (30 ft/min)
  • Excellent long term stability
  • High resistance to pollution
  • Small angle dependency
  • Large, easily readable display
  • Current and voltage output
  • Modbus RTU or BACnet MS/TP
  • User configurable and adjustable

Technical data

  • 0...1 m/s (0...200 ft/min)
    0...1.5 m/s (0...300 ft/min)
    0...2 m/s (0...400 ft/min)

    Measuring range selectable by jumper
  • 0.15...1 m/s ±(0.04 m/s + 2 % of mv)
    0.15...1.5 m/s ±(0.05 m/s + 2 % of mv)
    0.15...2 m/s ±(0.06 m/s + 2 % of mv)

    Accuracy at 20 °C (68 °F), 45 % RH, 1013 hectopascal
  • typ. 4 sec or typ. 1 sec.

    Response time(at constant temperature)
  • 0-10 V and 4-20 mA

    Output analogue - selectable
  • Modbus RTU or BACnet MS/TP

    Output digital
  • 24 V AC/DC

    Supply

Product inquiry

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FAQ

  • What is the difference between Modbus RTU and Modbus TCP/IP?

    The main difference is the hardware interface. The Modbus RTU protocol runs on RS485 Hardware while Modbus TCP/IP protocol on Ethernet hardware.

  • What is the difference between a BTL listed and a non-listed BACnet product.

    All BACnet products are tested at E+E. The BTL listed E+E products have been additionally tested by the BACnet Testing Laboratories.

  • 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 downloads.epluse.com/fileadmin/data/miscellaneous/datasheet_air_velocity_measurement_basics.pdf

  • 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 www.kalibrierdienst.at/fileadmin/content/White_Paper_Calibration_and_traceability_in_measuring_technology.pdf

  • 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

  • How I can readjust my E+E air velocity sensor?

    For readjusting the air velocity sensor you need first of all a reliable reference. This would be a wind channel. For the readjustment procedure please see the operation manual of the specific E+E air velocity sensor available at www.epluse.com

    In case an approriate air velocity reference in not available, please return the device to E+E for service.

  • 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.