HT series flowmeter adopts foreign advanced technology. The installation does not need any additional equipment such as tube, rectifier etc. it does not effect by the elbows, tees, valves, etc. it is high accuracy, no noise and stability. It is used to measure flow of liquid which contains sands, water and other solid. The pressure loss is small. It is no more than 0.06 MPa. It is widely used for aviation fuel, light oil, low viscosity, and medium viscosity oil products. this series flowmeter is mechatronic products which can be used as the standard instrument.