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Model-641B
Heated Mass Flow Air Velocity Transmitter, 250-2000 FPM, HVAC/Exhaust
- SS sensor suitable for dirty air flow measurement
- Ranges from 250 FPM (1.25 MPS) to 2000 FPM (10 MPS)
- 4 to 20 mA output
- Digital filter for signal damping
Model-641B
From
$
964.25
Product Overview
- Accuracy ± 5 %
- Accuracy Note 5% FS process gas: 32 to 122°F (0 to 50°C); 6% FS process gas: -40 to 32°F and 122 to 176°F (-40 to 0°C and 50 to 80°C)
- Air Velocity, Max 2000 FPM
- Air Velocity, Min 250 FPM
- Electrical Connection Screw Terminal
- Electrical Output 4 to 20 mA
- Filter 0.5 to 15 s (Selectable)
- Loop Resistance 600 Ω max
- Media Compatibility Air, Argon, Carbon dioxide, Helium, Nitrogen, Non-Corrosive Dry Gases
- Mounting Orientation None
- Number of Wires 4
- Operating Temperature, Max 140 °F
- Operating Temperature, Min 32 °F
- Output Detail 4 to 20 mA, isolated 24 V source, 3 or 4-wire connection
- Power Consumption 300 mA
- Probe Length 4 in
- Process Temperature, Max 176 °F
- Process Temperature, Min -40 °F
- Relative Humidity Non-Condensing
- Response Time 1.5 s to 95%
- Response Time Note Flow: 1.5 s to 95% of final value (output filter set to minimum)
- Supply Power Note 12 to 35 Vdc, 10 to16 Vac. 1.5 A rating required on supply due to initial power surge drawn by transmitter
- Supply Power Type AC/DC
- Supply Voltage 10 to 16 Vac, 12 to 35 Vdc
- Weight 12.6 oz
The Series 641B Air Velocity Transmitter uses a heated mass flow sensor suitable for dirty air flow applications. It has user-selectable ranges from 250 FPM (1.25 MPS) to 2000 FPM (10 MPS).
Product Applications
- Exhaust stack flow monitoring
- Air control in drying processes
- HVAC air velocity measurements
- Fan supply and exhaust tracking
- Clean room ventilation monitoring