... hours ( suspend load sediment concentration≤0.5kg/m³, flow rate≤1m/s)Instrument Installation: Hydrology cableway lead fish- head ... of Signal: 1 rotates/4 signalsApplication: Measure mean flow rate of scheduled testing point in rivers, lakes, reservoirs, channels ... general rivers and lakes; Especially used to measure flow rate of environmental protection, mine, field irrigation and water resources ...