AIRFLOW TRANSMITTER

ESF is an airflow transmitter with a broad application area. It can be used for control, surveillance, and regulation of the flow rate in fresh-air and ventilation systems, etc.

FEATURES

• Converts airspeed into a 4 - 20mA or a 0 - 10 VDC signal
• Linear output signal
• Fully electronic registration of airflow
• AC or DC voltage supply
• Compensates for changes of air temperature
• Telescopic sensor facilitates installation
• Temperature output signal 0 - 10 VDC
• Fuse Protected
• Made with corrosion resistant material

APPLICATIONS
The ESF-35-2 airflow transmitter can be used in a wide range of applications such as:

• Measurements of airflow speed via PLC/outstation/EMS
• Regulation of airflow speed
• Monitoring of airflow speed 

INSTALLATION
The airflow transmitter ESF-35-2 is installed in such a way that the current of air passes through the gap of the sensor head. Conductors to and from the transducer should be kept isolated from high-power conductors where powerful transient voltage spikes may appear.
 
FUNCTION
The ESF-35-2 transmitter registers the airflow speed according to a thermal principle based on the fact that the cooling action of air increases with airspeed. The action is measured and converted to a 4 - 20mA or a 0 - 10 V signal corresponding to airflow speeds from 0 - 8 m/s (0 - 1575 ft/min) or 0 - 16 m/s (0 - 3150 ft/min).