The SERIES 641 Air Velocity Transmitter is the ideal instrument for monitoring air flow

The SERIES 641 Air Velocity Transmitter is 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/BENEFITS
• 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 to 20 mA output
• Digital filter for signal damping
APPLICATIONS
• Exhaust stack flow monitoring
• Air control in drying processes
• HVAC air velocity measurements
• Fan supply and exhaust tracking
• Clean room ventilation monitoring