■ overview
LSThe rotary piston flowmeter is a type of positive displacement flowmeter, which not only has the advantages of being suitable for various media, high temperature resistance, high pressure resistance, high accuracy, and reliable operation, but also is suitable for measuring high viscosity. Its characteristics are simple structure, convenient and time-saving disassembly and assembly. If the measuring components need to be cleaned first, they can be easily removed from the housing without the need for special tools. After cleaning, they can be reset without adjustment, without affecting the measuring accuracy.rotary-piston flowmeterIt has two types: on-site indication and remote transmission, which can achieve centralized control of pipeline flow over long distances.

■ Unique features
1The piston achieves rotary floating motion with minimal wear (generally maintenance free). 4The counter adopts LCD display, which can display instantaneous flow, cumulative flow, and shift flow.
2Small size, light weight, convenient and time-saving disassembly and assembly. 5Output signal:4～20mAperhaps6～12Vpulse signal
3The piston chamber has a large operating space, and small particles in the medium can be discharged on their own.

■Working principle
The working principle of the rotary piston flowmeter is shown in the diagram. The measured liquid enters the instrument measuring chamber from the inlet end, creating a pressure difference at the inlet and outlet ends that forces the piston to rotate in the direction indicated by the arrow in the figure, as shown in the diagram（a）. As the liquid continues to flow in. Rotate the piston to the diagram（b）Position shown. Form a closed crescent shaped cavity with a cross-sectionV1The closed crescent shaped cross-section formed by the continued rotation of the piston under differential pressureV1Connect to the outlet end and start draining as shown in the figure（c）Location. When the piston rotates to the diagram（d）When in position, it forms a closed crescent shaped cavity with a cross-sectionV2Continuing to rotate wouldV2Connect with the outlet end and discharge, that is, the piston returns（a）Position shown. In this way, the piston will be discharged after one revolutionV1 + V2The liquid flowing through the flowmeter can be accurately measured by coupling and counting mechanism.

■ Technical parameters

■ Appearance and installation dimensions

1, nominal diameter（mm）：Dn15、25、32、50、80
2Basic error（%）：0.2、0.3、0.5
3、 The biggest work pressure（MPa）：1.6、2.5、4.0
4Flow range（m3/h）：DN15 0.05~0.80 DN80 6.0~60
DN25 0.20~1.80 DN100 10~100
Dn40（32）0.60~3.60 DN150 25~250
DN50 3.0~32
5Temperature range（℃）：0~60；0~280(Add heat sink)
6Medium viscosity(mPa.s):1~3000
7Pipeline connection flange: GB9113.4-2000
8Material series:①Cast steel series②stainless steel
9Method for marking flow meters: