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Sensor for Very Low Air Velocity

EE660

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 air velocity sensor for duct mounting

EE660 air velocity sensor with remote probe and display

Key Features
Measurands
Technical data

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 and 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

Measurands

Display

  • large, easily readable
  • With backlight
  • 180° rotatable

Smooth cover surface

  • No accumulation of dust in protruding edges

Bayonet screws

  • Open/closed with a ¼ rotation

Electronics on the underside of the PCB

  • Optimum protection against mechanical damage during installation

Appropriate for US mounting requirements

  •  Knockout for ½” conduit fitting

Adjustment / Configuration

  • Measuring range
  • Response time
  • RS485 Setup
  • Termination resistor

External mounting holes

  • Mounting with a closed cover
  • Electronics protected against construction site pollution

Test report according DIN EN 10204 - 2.2

Mounting flange

Sensing element

  • Excellent accuracy
  • Long-term stability
  • Low sensitivity to pollution
  • Low angular dependency

Technical data

Measuring range selectable by jumper
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)
Accuracy at 20 °C (68 °F), 45 % RH, 1013 hectopascal
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)
Response time(at constant temperature)
typ. 4 sec or typ. 1 sec.
Output analogue – selectable
0-10 V and 4-20 mA
Output digital
Modbus RTU or BACnet MS/TP
Supply
24 V AC/DC