Insertion Vortex Flowmeter

Approved by：CE, SIL-3, ATEX Explosion-proof certification

The Insertion Vortex Flowmeter offers a practical, cost-effective solution for measuring flow in large pipelines. Using the Kármán vortex principle, it accurately measures liquids, gases, and steam without the need to cut or replace existing pipes.
Its insertion-type design makes it ideal for DN250 and above, reducing installation cost and downtime. With no moving parts, it ensures long-term stability and low maintenance. Optional temperature and pressure compensation allow direct output of mass or standard flow, making it a reliable tool for process optimization and energy management in industrial plants.
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  • Insertion design for large pipes – Installs through a single nozzle, so you can meter DN250 and above without changing the pipeline.

  • No moving parts – The sensor doesn’t wear, so accuracy stays stable and maintenance is low.

  • Multi-medium capability – Measures liquid, gas, and steam, so one instrument type can standardize a plant’s flow metering.

  • Wide turndown (up to 1:20/1:30) – Handles big flow swings, so you still get usable readings at low load.

  • High-temperature resistant structure – Optional high-temp probe lets you measure steam lines without extra cooling.

  • Applicable pipe size: Standard from DN250 to DN1200; above DN1200 on request

  • Measured media: Liquids, gases, and steam

  • Accuracy (insertion): About ±2.5% of reading / ±2.5% FS under specified installation conditions

  • Repeatability: Better than 0.5% (medium-dependent)

  • Range ratio: 1:6 to 1:30 (depends on medium and Reynolds number)

  • Medium temperature: Standard −40 °C to +260 °C; high-temperature versions: up to +450 °C (ordered by agreement)

  • Allowable vibration: Piezoelectric type about 0.2 g; capacitive type up to 1.0–2.0 g

  • Power supply options: 12 VDC or 24 VDC; battery-powered 3.6 V for local display types

  • Protection class: IP65 for standard transmitter heads; IP68 available for immersed sensor sections

  • Explosion-proof grade: Intrinsically safe or flameproof (Ex ia / Ex d) according to selection

  • Ambient conditions: −20 °C to +55 °C; 5–90% RH

  • Communication: Modbus-RTU over RS-485 for remote reading / parameter setting (optional)
  • Choose the right location: Install on a full, pressurized, non-pulsating line with enough straight run before and after the meter.
  • Avoid strong vibration: Although this meter has DSP and good anti-vibration design, keeping away from strong mechanical vibration will improve long-term stability.
  • Mind high temperature: On steam lines, keep the converter/electronics away from very hot spots; use an extension neck or remote converter if needed.

  • Protect outdoors: If installed outside, add a sun/rain cover to protect the transmitter and cable entries.

  • Clean medium is better: Although it can handle some impurities, large particles or wet steam slugs can affect measurement — add separators/filters where needed.

  • Periodic verification: For steam and gas billing points, confirm calibration regularly and record K-factor/sensor data for traceability.

  • Boiler and plant steam supply lines (saturated and superheated steam)

  • Compressed air main headers and plant air distribution

  • Nitrogen and other industrial gases in large pipelines

  • Cooling water and circulating water in power, steel, and chemical plants

  • Process water where a full-bore meter is too expensive for large diameters

  • Central heating / district energy systems for steam or hot water

  • Sewage treatment and industrial wastewater (cleaner lines) where non-moving sensors are preferred

  • Energy measurement and balancing in large factories

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