The E+E EE671 Air Flow Transmitter is a compact air velocity probe specifically designed for HVAC (Heating, Ventilation, and Air Conditioning) applications. Its built-in flow sensing element VTQ leverages two advanced technologies: state-of-the-art E+E thin-film manufacturing and the newest transfer molding technology. Operating on the hot-film anemometer principle, the EE671 delivers high measurement accuracy and reproducibility, along with excellent long-term stability and outstanding resistance to pollutants—ensuring reliable performance in typical HVAC environments.

For user convenience, the EE671 is equipped with a plug connection for easy wiring. The probe features an alignment strip, and the scope of supply includes a matching mounting flange; these two components work together to simplify installation and ensure correct positioning of the probe in the air flow. Additionally, the mounting flange allows the immersion depth of the probe to be adjusted infinitely, adapting to different duct or equipment configurations.

Applications for the EE671 include:

• Heating and ventilation systems: For monitoring and optimizing air flow in heating or ventilation circuits
• Flow monitoring and control: For maintaining stable air flow rates in industrial or commercial HVAC setups
• Inlet air monitoring in ovens: For ensuring proper air supply to ovens in food processing, manufacturing, or other industrial applications

Features

• Hot film technology for high accuracy, reproducibility, and long-term stability
• Tailored for HVAC applications, meeting the specific needs of heating, ventilation, and air flow control scenarios
• Wide measuring range up to 4000 ft/min (20 m/s), covering most HVAC air flow requirements
• Compact design, suitable for installation in space-constrained HVAC equipment or ducts
• Flexible output signal options to match different monitoring/control systems:
  • 0 to 1V, 0 to 5V, 0 to 10V, or RS485
• Resistant to contamination, reducing maintenance needs and ensuring consistent performance in dusty or polluted air
• Easy and quick mounting, supported by alignment strip and included mounting flange
• Durable polycarbonate probe head with IP50 protection, preventing damage from minor dust ingress
• IP54-rated housing, protecting internal components from splashing water and dust for long-term reliability
• Infinitely variable immersion depth via included mounting flange, adapting to diverse installation requirements