Series 641RM Air Velocity Transmitter with Remote Probe

The Series 641RM Air Velocity Transmitter with a remote probe enables accurate, reliable monitoring of airflow or airspeed in ducting, vents, environmental chambers, or cleanrooms. The remote probe allows sensing where wiring or local sensors cannot be placed conveniently. The transmitter converts raw flow or velocity readings into a standardized output (e.g. 4-20 mA) for integration into building automation, environmental monitoring, or process control systems. Robust design ensures consistent performance, essential in HVAC, labs, and industrial air handling systems.

Key Features:

Remote probe for flexible positioning in ducts or inaccessible locations

Air velocity measurement with good accuracy over a defined range

Output signal (typically analog, e.g. 4-20 mA) for connection to controllers or monitoring systems

Durable components resistant to moisture, temperature variations, and airflow turbulence

Easy installation and calibration for field use