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Dwyer 风速变送器 641B系列

Dirty Air Flow Applications

641B系列风速变送器采用热式质量流量传感技术。可选量程范围从250 FPM 到 2000 FPM或公制单位1.25 MPS 到 10 MPS。

应用及案例


•  Exhaust stack flow monitoring

•  Air control in drying processes

•  HVAC air velocity measurements

•  Fan supply and exhaust tracking

•  Clean room ventilation monitoring


产品特色


•  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



技术指标


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.



选项配件



安装手册


Instruction Manual.pdf



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