FLW type vortex flowmeter is a precision instrument manufactured based on the Karman vortex principle, used for measuring the flow rate of liquids, gases, and steam in closed pipelines. This flowmeter has the characteristics of simple structure, stable performance, and long service life. It is widely used in industries such as petroleum, chemical, metallurgy, pharmaceutical, thermal power, and papermaking for measurement management and process control.
The FLW vortex flow meter measures liquid, gas or steam flow in closed pipelines using the Kármán vortex principle. The sensor element is sealed inside the measuring body, never contacts the process fluid, and the instrument contains no moving parts, providing long service life and low maintenance.
The manual provides product features, working principle, measurement ranges, physical dimensions, installation requirements, wiring diagrams, parameter settings, and detailed technical specifications such as pressure range, temperature limits, power supply, output signals and protection ratings. This manual is written in Chinese.
| Working pressure | 1.6–4.0 MPa |
|---|---|
| Medium temperature range | -40 °C to +200 °C (integrated) / -40 °C to +300 °C (separated) |
| Power supply | Self‑powered 3.6 VDC (optional external 24 VDC) |
| Accuracy | Class 1 or Class 1.5 |
It can operate from an internal 3.6 VDC battery and may be supplied with an external 24 VDC source for remote transmission.
The instrument is rated IP65 and has an explosion protection class ExdIIBT4.