Dwyer® 641RM-12 Series Air Velocity Transmitter is the perfect instrument for observing airflow. This transmitter utilizes a warmed mass stream sensor, which takes into consideration exact speed estimations at different stream rates and temperatures. the transmitter has a highly accurate heated mass flow sensor as the Series 641, with a remote probe construction. The unit’s 6´ cable which connects the sensing probe with the electronic enclosure allows the enclosure to be mounted where it can be more easily accessed.

Application: exhaust stack flow monitoring, Air control in drying processes, HVAC air velocity measurements, Fan supply, and exhaust tracking, Cleanroom ventilation monitoring.