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Air Flow Sensor for HVAC

EE650

The EE650 air flow sensor is dedicated for accurate and reliable measurement in building automation and ventilation applications.

EE650 air velocity sensor with remote probe

EE650 air flow sensor for duct mounting

EE650 employs the new VTQ air flow sensor element, which operates on the thermal anemometer principle and is manufactured by E+E in state-of-the-art thin film technology.

Due to its innovative design, the VTQ air flow sensor element is very robust and highly insensitive to pollution, which leads to outstanding long-term performance.

The measured data is available either on an analogue voltage or current output, user selectable, or on the RS485 interface with Modbus RTU or BACnet MS/TP protocol.

The enclosure design and the mounting flange included in the scope of supply allow for easy installation or replacement. The configuration and adjustment of the EE650 can be comfortably performed on the electronics board or via digital interface.

Typical Applications

HVAC
Ventilation systems
Process control

Key Features

Best accuracy and long term stability
High resistance to pollution and mechanical stress
Measuring range 0.2 – 10/15/20 m/s (40 – 2000/3000/4000 ft/min), user selectable
Current and voltage outputs, selectable
RS485 interface with Modbus RTU or BACnet MS/TP
Duct mount and remote probe versions
Easy installation
Digital interface for adjustment by user

Technical Data

Measuring Range - user selectable 0...10 m/s (0...2000 ft/min) 0...15 m/s (0...3000 ft/min) 0...20 m/s (0...4000 ft/min)	Accuracy at 20 °C (68 °F), 45 % RH, 1013 hectopascal 0.2...10 m/s ±(0.2 m/s + 3 % of mv) 0.2...15 m/s ±(0.2 m/s + 3 % of mv) 0.2...20 m/s ±(0.2 m/s + 3 % of mv)
Response time - user selectable typ. 4 sec or typ. 1 sec.	Output Analogue 0-10 V and 4-20 mA
Output Digital Modbus RTU or BACnet MS/TP	Supply 24V AC/DC