最适用于楼宇自动化系统的AVU系列风速变送器能广泛地用于暖通空调系统进行风速测量和控制,特别是用于建筑物能量管理系统。AVU的精度为5%,价格低,有六种量程范围供选择,可输出4-20MA或0-10VDC。
AVU的工作原理是用两个温度传感元件测量被风带走的热量,然后计算出风速。采用了特别设计,能够精确测量,不会产生漂移。
应用:
1 进风和排风监测
2 洁净室系统
3 医护室
Service: Clean Air And Compatible, Non-Combustible Gases.
Accuracy: ±5% Of Full Scale.
Response Time (90%): 5 Sec (Typical).
Temperature Limits: 32 To 122°F (0 To 50°C).
Humidity Limit: 0-90% RH, Non-Condensing.
Power Requirements: -A Models 24 VDC +10% - 15%; -V Models 24 VDC Or 24 VAC +10% - 15%.
Output Signal: -A Models 4-20 MA Current Loop; -V Models 0-10 VDC.
Loop Resistance: (-A Models ) 700 Ohms.
Current Consumption: 60 MA + Output Current.
Maximum Start Up Current: 85 MA; 10 V.
Output Current Limit: (-V Models) >10 MA.
Electrical Connections: Screw Terminal. Cable Gland For 4-8 Mm Wire (16 Gauge Wire).
Enclosure Rating: NEMA 6 (IP67) Except Sensing Point.
Probe Dimensions: 9.45 X .75" (240 X 19 Mm).
Mounting Orientation: Unit Not Position Sensitive. Probe Must Be Aligned With Air Flow.
Weight: 8.8 Oz (250 G).
Agency Approvals: CE.
ACCESSORIES:
NISTCAL-AV1 - NIST Traceable Calibration Certificate For Air Velocity Thermal Anemometer Meters.