สอบถามข้อมูลเพิ่มเติม

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.

Product Applications

• Exhaust stack flow monitoring
• Air control in drying processes
• HVAC air velocity measurements
• Fan supply and exhaust tracking
• Clean room fresh air supply
• Ensure proper lab hood exhaust flow rates

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 to 20 mA output
• Digital filter for signal damping

Specifications

• Service : Clean air and non-combustible, compatible gases.
• Accuracy : 3% FS process gas: 32 to 122°F (0 to 50°C); 4% FS process gas: -40 to 32°F and 122 to 212°F (-40 to 0°C and 50 to 100°C).
• Temperature Limits : Process : -40 to 212°F (-40 to 100°C); Ambient : 32 to 140°F (0 to 60°C).
• Pressure Limit : 100 psi (6.89 bar) maximum
• Power Requirements : 12-35 VDC, 10-16 VAC
• Output Signal : 4-20 mA
• Ranges from 250 FPM (1.25 MPS) to 15,000 FPM (75 MPS)
• Probe Length : 6" to 36"

Models & Ordering