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

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