1、 Core measurement function

1. Volume flow measurement
   • principleWhen the fluid passes through the turbine flowmeter, it drives the turbine blades to rotate, and the turbine speed is proportional to the fluid flow velocity. By detecting the turbine speed (usually using magnetic induction or photoelectric encoding technology), the volumetric flow rate of the fluid can be calculated (units: L/s, m ³/h, etc.).
   • featureHigh measurement accuracy (usually ± 0.5%~± 1%), fast response speed, suitable for measuring clean and low viscosity fluids.
2. Mass flow measurement (requires extended functionality)
   • principleBy using built-in temperature and pressure sensors, combined with fluid density compensation formula, the volumetric flow rate is converted into mass flow rate (unit: kg/s, t/h, etc.).
   • Application scenariosNatural gas trade settlement, steam metering, and other occasions that require billing based on quality.

2、 Intelligent functions

1. Digital signal output
   • pulse signalEvery time a certain volume of fluid flows through, the turbine rotates once to generate a pulse signal, and the pulse frequency is proportional to the flow rate. It can be directly connected to PLC, DCS or flow integrator for counting and display.
   • 4-20mA current signalOutput analog signals that are linear with flow rate, facilitating long-distance transmission and integration with control systems.
   • RS485/HART 通信Supports digital communication protocols, enabling remote monitoring, parameter setting, and fault diagnosis.
2. Self diagnosis and alarm function
   • fault detectionReal time monitoring of turbine speed, signal strength, power status, etc., triggering alarms when abnormalities are detected (such as air traffic control, blockage, sensor failure).
   • alarm outputOutput alarm information through relays or digital signals to prompt operators to handle it in a timely manner.
3. Data recording and storage
   • historical dataThe built-in memory can record historical data of parameters such as flow rate, temperature, and pressure, and supports querying by time and event.
   • Power failure protectionAfter power failure, data will not be lost to ensure data integrity.

3、 Extended functionality

1. Temperature and pressure compensation
   • Built in sensorsIntegrated temperature and pressure sensors for real-time measurement of fluid operating parameters.
   • Density compensationCalculate density based on fluid temperature and pressure, correct volumetric flow rate to mass flow rate, and improve measurement accuracy (especially suitable for gas metering).
2. Batch processing control
   • Quantitative controlSet the target flow rate value, and when the cumulative flow reaches the set value, automatically close the valve or trigger an alarm, suitable for filling, batching and other scenarios.
   • Segmented measurementSupport multiple flow settings to achieve precise control of different batches.

4、 Auxiliary functions

1. Display and operation interface
   • Local displayLCD screen or digital display shows instantaneous flow rate, cumulative flow rate, temperature, pressure and other parameters.
   • Button operationSupport local operations such as parameter setting, zeroing, and unit switching, simplifying on-site debugging.
2. anti-interference capability
   • Electromagnetic Compatibility (EMC)Through anti electromagnetic interference design, ensure stable operation in strong electromagnetic environments.
   • Signal filteringPerform software filtering on pulse signals to eliminate jitter and noise interference.
3. Multilingual support
   • Menu languageSupports multiple language interfaces such as Chinese and English, making it convenient for users from different regions to use.

5、 Typical application scenarios

1. Oil and gas industry
   • Measure the flow of crude oil, natural gas, and refined oil for trade settlement and pipeline monitoring.
   • Combining temperature and pressure compensation to achieve mass flow measurement.
2. chemical industry
   • To measure the flow rate of corrosive liquids such as acids, alkalis, and solvents, an anti-corrosion turbine flowmeter should be selected.
   • Used for reactor feed control and process monitoring.
3. water treatment industry
   • Measure the flow rate of tap water, sewage, and reclaimed water for water supply scheduling and sewage treatment metering.
   • Combining electromagnetic valves to achieve quantitative dosing control.

6、 Selection precautions

1. Fluid characteristicsSelect appropriate materials (such as stainless steel, Hastelloy) and structures (such as filters and straight pipe sections) based on fluid viscosity, corrosiveness, and impurity content.
2. flow rangeEnsure that the instrument range covers the actual flow rate and avoid long-term operation in low flow or over range conditions.
3. precision requirementSelect the appropriate accuracy level based on the application scenario, and trade settlement requires higher accuracy (such as ± 0.5%).
4. environmental conditionsConsider factors such as temperature, pressure, vibration, electromagnetic interference, etc., and select instruments that match the protection level and explosion-proof level.