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Dirty Air Flow Applications
641B系列風速變送器采用熱式質量流量傳感技術?？蛇x量程范圍從250 FPM 到 2000 FPM或公制單位1.25 MPS 到 10 MPS。
應用及案例
? Exhaust stack flow monitoring
? Air control in drying processes
? HVAC air velocity measurements
? Fan supply and exhaust tracking
? Clean room ventilation monitoring
產品特色
? 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
Service: Air And Compatible, Non-Combustible Gases.
Accuracy: 5% FS Process Gas: 32 To 122°F (0 To 50°C); 6% 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 176°F (-40 To 80°C). Ambient: 32 To 140°F (0 To 60°C).
Humidity Limit: Non-Condensing.
Power Requirements: 12-35 VDC, 10-16 VAC. 1.5 A Rating Required On Supply Due To Initial Power Surge Drawn By Transmitter.
Output Signal: 4-20 MA, Isolated 24V Source, 3 Or 4-Wire Connection.
Output Filter: Selectable 0.5-15 (Seconds).
Loop Resistance: 600 Ohms Max.
Current Consumption: 300 MA Max*.
Electrical Connections: Screw Terminal.
Enclosure Rating: Designed To Meet NEMA 4X (IP66).
Mounting Orientation: Unit Not Position Sensitive.
Weight: 12.6 Oz (357.2 g).
*A Brief Current Transient Exceeding 300 MA May Be Seen On Startup.
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