• Gas Turbine Flowmeter
  • Gas Turbine Flowmeter
Gas Turbine Flowmeter
  • Applicable medium
    Suitable for low and medium flow rate gases such as air, natural gas, coal to gas, liquefied gas, light hydrocarbon gas, etc
  • Not applicable medium
    Liquid, solid
  • Product Introduction
    The LWQ series gas turbine flowmeter has the characteristics of high accuracy, good repeatability, mature technology, and stable performance. It is widely used in gas metering in industries such as petroleum, chemical, power, metallurgy, and boilers, as well as for volumetric flow rate and total amount of low viscosity gases in closed pipelines of urban natural gas and gas pressure regulating stations, and gas thermal metering.

Working principle

When the fluid flows into the flowmeter, it is rectified and accelerated by the specialized integrated rectifier at the inlet. Due to the angle between the turbine blades and the fluid flow direction, the turbine generates a rotational torque. After overcoming the friction torque and fluid resistance torque, the turbine begins to rotate. Within a certain flow range, the angular velocity of turbine rotation is proportional to the fluid volume flow rate. According to the principle of electromagnetic induction, a magnetic sensor is used to sense a pulse signal proportional to the volume flow rate of the fluid from a coaxial rotating signal wheel. After amplification, filtering, and shaping, the signal, along with temperature and pressure sensor signals, enters the micro processing unit of the intelligent flow integrator for calculation and processing, and directly displays the volume flow rate and total amount of gas on the LCD screen.

Product Features

1. High quality alloy turbine with higher flow stability and corrosion resistance;

2. Imported high-quality specialized bearings with long service life;

3. The isolation between the measuring room and the ventilation room ensures the safety of the instruments;

4. It can detect the temperature, pressure, and flow rate of the tested gas, automatically track and compensate for the flow rate, and display the accumulated gas volume under standard conditions (Pb=101.325KPa, Tb=293.15K). It can also query the temperature and pressure values in real time;

5. Wide flow range (Qmax/Qmin ≥ 20:1), good repeatability, high accuracy (up to 1.0 level), low pressure loss, low starting flow rate, up to 0.6m3/h;

6. Intelligent instrument coefficient multi-point nonlinear correction;

7. Built in pressure and temperature sensors, high safety performance, compact structure, and beautiful appearance;

8. The instrument has explosion-proof and protective functions, with an explosion-proof mark of Exd Ⅱ CT6 and a protection level of IP65;

9. The system operates with low power consumption, and a 3.2V10AH lithium battery can be used continuously for more than 3 years;

10. The instrument coefficient and cumulative flow value will not be lost for ten years after power failure.

technical parameter

Execution standards

Measurement of Gas Flow in Closed Pipelines - Gas Turbine Flowmeters (GB/T8940-2003)

Instrument diameter (mm)

And connection method

25、40、50、65、80、100、125、150、200、250、300、Adopting flange connection

25、40、50Threaded connection can be used

Accuracy

±1.5%R(±1%R Special needs to be made)

Range ratio

1:10;1:20;1:30

Instrument material

Table body: 304 stainless steel or cast aluminum

Impeller: anti-corrosion ABS or high-quality aluminum alloy

Converter: Cast aluminum

Applicable conditions

Medium temperature:-20℃~+80℃

Environmental temperature:-30℃~+60℃

Relative humidity:5%~90%

Atmospheric pressure:86kpa~106kpa

Working power supply

A. External power supply: 24VDC ± 15%, ripple ≤ ± 5%, suitable for 4-20mA output, pulse output, RS485

B. Internal power supply: 1 set of 3.0V10AH lithium batteries, which work normally when the battery voltage is between 2.0-3.0V

When the voltage is below 2.0, an undervoltage indicator appears

Whole machine power consumption

A. External power supply: < 1W

B. Internal power supply: average power consumption ≤ 1W, can be used continuously for more than 3 years

Signal output function

Pulse signal, 4-20mA current signal, control signal

Communication output function

RS485

Real time recording function

Start stop record, diary record, and fixed time interval record

Signal line interface

Internal thread M20 × 1.5 or other

Explosion proof grade

ExdIICT6

Protection level

IP65


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