明渠流量计主要由雷达流速计、雷达水位计组成,流速计用于采集流体表面流速,并经过模型计算得到过水断面平均流速,再结合水位计测得的水位以及断面信息算出过流断面面积,从而利用公式流量=平均流速×过流断面面积×修正系数得到流量,其中修正系数是根据实际测量环境得到的标准值进行计算得到。
一、产品说明
明渠流量计主要由雷达流速计、雷达水位计组成,流速计用于采集流体表面流速,并经过模型计算得到过水断面平均流速,再结合水位计测得的水位以及断面信息算出过流断面面积,从而利用公式流量=平均流速×过流断面面积×修正系数得到流量,其中修正系数是根据实际测量环境得到的标准值进行计算得到。
二、工作参数
参 数 说 明
供电电压 直流7 ~ 28V
电流(12V供电) 正常工作时300mA左右,休眠小于1mA。
工作温度 -35° ~ 70°
防水等 IP67
发射频率 24.000 ~ 24.250GHz
通讯接口 RS-232 / RS-485
通讯协议 MODBUS-RTU / 自定义协议
三、测量参数
参 数 说 明
测速范围 0.15 ~ 15m/s
测速精度 ±2%
速度分辨力 0.01m/s
测距范围 0.4 ~ 40m
测距精度 ±1cm
距离分辨力 1mm
天线样式 流速:14 x 32゜
水位:11 x 11゜
间隔时间 1 ~ 5000min
四、外观参数
参 数 说 明
流量计尺寸(长×宽×高) 220×120×83.8mm
支架尺寸(长×宽×高) 100×100×100mm
重量 流量计+支架: 5.8kg
外壳材料 镀锌、不锈钢板
五、仪器特点
1、非接触、安全低损、少维护、不受泥沙影响
2、能胜任洪水期高流速条件下的测量
3、具有防反接、过电压保护功能
4、系统功耗低,一般太阳能供电即可满足测流需要
5、多种接口方式,既有数字接口又具有模拟接口,兼容标准Modbus-RTU协议方便接入系统;
6、具备无线数据传输功能(选配)
7、可独立与现在运行中的城市水情、污水、环境自动测报系统联机
8、测速范围宽,测量有效距离远达10m
9、多种触发模式:周期、触发、手动、自动
10、安装特别简单,土建量很少
11、全防水设计,适合野外使用
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