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

产品特色技术指标选项配件安装手册机构认证尺寸详图产品大图型号列表订货选型宣传彩页

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

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.