641 Series Air Velocity Transmitter (12" Probe)

The Series 641 Air Velocity Transmitters are the ideal instrument for monitoring air flow. This transmitter uses a heated mass flow sensor which allows for precise velocity measurements at various flow rates and temperatures. The 641's 16 field-selectable ranges provides it the versatility to be selected for several air flow applications. The optional LED produces a complete, low-cost solution for local indication of air flow. Features: * Ranges from 250 FPM (1.25 MPS) to 15,000 FPM (75 MPS) * Optional bright LED display * Easy push-button set-up * Compact housing * 4-20 mA output * Digital filter for signal damping