High-quality Flow Meter

Flow meters are among the most important instruments in industrial process control, energy management, and trade settlement. Different flow meter technologies suit different media, pipe sizes, accuracy requirements, and operating conditions. Wrong selection leads to inaccurate measurements or complete meter failure. Anhui Tiankang offers a comprehensive flow meter product line. This covers electromagnetic, vortex, turbine, orifice plate, rotameter, and ultrasonic technologies. This guide summarizes the core features of each type. It helps customers quickly identify the right flow meter for their specific conditions.

The electromagnetic flow meter (LD) works on Faraday's law of electromagnetic induction. It measures only conductive liquids (conductivity ≥5μS/cm). The measuring tube has no flow restrictions or moving parts. Pressure loss is zero. The meter never blocks. This makes it ideal for dirty or corrosive liquids like wastewater, slurry, acid and alkaline solutions, and seawater. It cannot measure pure water, oils, or gases. Diameters range from DN10 to DN2000. Accuracy is 0.5%.

High-quality flow meter options include the vortex flow meter (LU). This works on the Karman vortex principle. It is the only flow meter that measures liquids, gases, and steam with one instrument. The structure is simple. There are no moving parts. Pressure loss is low. The turndown ratio is wide. Small changes in temperature and pressure barely affect readings. It suits clean single-phase fluids like compressed air, natural gas, saturated and superheated steam, and clean water. It does not work with media containing heavy dust, viscous fluids, or crystallizing substances. Diameters range from DN15 to DN2000. Liquid accuracy is 1.0%. Gas and steam accuracy is 1.5%.

The turbine flow meter (LW) works on the fluid-driven rotor principle. It offers the highest precision among flow meters (up to 0.2%). It suits clean liquids and gases for trade settlement and precision metering. The internal bearings require very clean media. An effective filter must be installed upstream. The meter does not suit high-viscosity or particle-containing media. Diameters range from DN4 to DN300.

The orifice plate/differential pressure flow meter works on the pressure drop principle. It has a simple structure, low cost, and no moving parts. It suits large-diameter steam, gas, and liquid measurement. Pressure loss is significant. The turndown ratio is narrow (typically only 1:3). Installation requires straight pipe runs before and after the meter.

The rotameter suits small flow gas or liquid on-site indication. It has a simple visual design and low cost. It is commonly used in laboratories or small pipelines. The ultrasonic flow meter uses the time-of-flight method. The clamp-on installation does not require pipe cutting. This non-invasive installation is its biggest advantage. It suits clean water and wastewater in large pipes.

All flow meters come with complete services from selection consulting and factory calibration to on-site installation guidance. Every meter can be equipped with 4-20mA, pulse, RS485, or HART outputs. For hazardous areas, ExdⅡCT6 flameproof types are available. Export shipments include CE (LVD+EMC+PED+RoHS), ATEX/IECEx, and EAC certifications.