AIR VELOCITY TRANSMITTERS, 3% FS, 100 psi (6.89 bar), 4 to 20 mA, 0.5 –15 (s).

AIR VELOCITY TRANSMITTERS
Brand: DWYER
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 s to 95% of final value (output filter set to minimum).
Temperature Limits: Process: -40 to 100°C; Ambient: 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. 1.5 A rating required on supply
due to initial power surge drawn by transmitter.
Output Signal: 4 to 20 mA, isolated 24 V source, 3 or 4-wire connection.
Output Filter: Selectable 0.5 –15 (s).
Loop Resistance: 600 Ω max.
Current Consumption: 300 mA max.
Electrical Connections: Screw terminal.
Process Connections: 1/2" male NPT.
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).
[641-12-LED]: Model, Probe Length: 12” (304.8 mm)
[NIST]: NIST traceable calibration certificate