Dwyer 641 [641-6] Air Velocity Transmitter 6 Inch Probe Length without Display

• Part Number: 641-6
• Probe Length: 6"
• Display: Without display
• For use with clean air and compatible, non-combustible gases
• Accurate up to ±3%
• 1.5 second response time
• Process temperature limit: -40 to 212°F
• Pressure limit: 100 psi (6.89 bar) maximum
• Ranges to 15,000 FPM or 75 MPS
• Optional bright LED display
• Easy push button set-up
• Compact housing
• 4-20 mA output, isolated 24V source, 3 or 4-wire connection
• Digital filter for signal damping
• Screw terminal electrical connection
• 1/2" male NPT process connection

• Service: Clean air and compatible, non-combustible gases.
• Accuracy: 3% FS process gas: 32 to 122°F (0 to 50°C); 4% FS process
• Gas: -40 to 32°F & 122 to 212°F (-40 to 0°C & 50 to 100°C).
• Response Time: Flow: 1.5 seconds to 95% of final value (output filter set to minimum).
• 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.
• Humidity Limit: Non-condensing.
• Power requirements: 12 to 35 VDC, 10 to 16 VAC. 1.5A rating required on supply due to initial power surge drawn by transmitter.
• Output signal: 4 to 20 mA, isolated 24V source, 3 or 4-wire connection.
• Output Filter: Selectable 0.5 –15 (seconds).
• Loop resistance: 600 Ω max.
• Current consumption: 300 mA max.
• Electrical connections: Screw terminal.
• Process connections: 1/2˝ male NPT.
• Enclosure rating: Designed to meet NEMA 4X (IP66) for non LED models only.
• Mounting orientation: Unit not position sensitive. Probe must be aligned with airflow.
• Weight: 12.6 oz (357.2 g).
• Agency Approval: CE.
• OPTIONAL DISPLAY Version: Display: 4-1/2 digit 1/2˝ red LED. Resolution: 1 FPM, 0.01 MPS (10 FPM @ 10,000 and 15,000 FPM ranges).
• Weight: 13.3 oz (377 g).

• (1) 6 Inch Probe Length
• (1) Instruction Manual

Brochure/Datasheet

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Instruction Manual

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