住宅超声燃气表USM-G4 USM系列超声波流量计是一种电子表,采用TOF(速度时间)原理来测量气体介质的流速,具有1.5类精度和高稳定性,USM-G2.5/G4广泛用于住宅天然气计量应用。功能 - 创新的超声波气流传感器技术;- 内置温度补偿;- 具有空气,100%CH4,H1和不同天然气的智能软件算法的高度测量敏感性和准确性;- 准确性的长期稳定性;- 抗污染,高腐蚀性;- 由于流动路径内没有阻塞物体,因此低压损失;- 无磁感应元件,没有磁场效应;- 低功耗,寿命长;- 低运营和维护成本; - Compact size, light weight, easy installation; - Compliant to OIML R137 and EN14236 class 1.5; - GPRS and NB-IoT solutions are optional. Specifications Measurement Range (m3/h) - USM-G4: 0.04-6 Accuracy - Class 1.5 Connector Type - Screw thread G1 1/4" or M30*2 Dimensions - 239*151*102mm Weight - 1.1kg Center Distance of Connectors (mm) - 130 Battery - 3x AA alkaline cells or ER34615/3.6V Error - Qmin≤Q< Qt: ±3%; Qt≤Q≤Qmax:±1.5% Working pressure - 0-20kPa Working temperature - -20℃~50℃ Storage temperature - -20°C ~ 60°C Ex-proof Approval - ExiblIBT3 Gb Waterproof Grade - Aluminum: IP54; Stainless steel: IP65 Applications Residential Ultrasonic Gas Meter Natural gas is the main part of power supply for residents nowadays, the market demand for residential natural gas meters is huge.