The VT-8000 Airflow Measuring Device consists of multiple sensors which are mounted on the fan to provide frequency pulse type electronic output signals which are directly proportional and linear to airflow velocity. These signals are totalized in the companion transmitter and converted to an industry standard, 4-20mA output. (1-5 VDC or 2-10 VDC are also selectable by jumper.)
Applications
VAV fan synchronization for small inlet fans (Less than 24" Diameter)
cleanroom flow tracking and control of pharma semi-conductor, process/industrial, hospital and R&D facilities, filter monitoring , and lab pressurization
Advantages
linear sensor output
true velocity averaging
drift-free operation
ten-to-one flow turndown
impervious to dirt and other suspended materials in the airstream
Model Series VT8000, antara lain :
> Model VT81
> Model VT82