WTD Gas Turbine Flowmeter with Mechanical Counter and Gas Volume Corrector

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 Overview

WTD turbine flowmeter is a kind of precision measuring instrument with high precision and high reliability. It is suitable for the measurement of all kinds of single-phase gas, applied to the measurement of gas in urban gas, petroleum, chemical, electric power, metallurgy and other industries. WTD gas turbine flowmeter have excellent low and high pressure metering 

performance, suitable for the accurate measurement of large flow gas.

According to the needs of users, we can provide different precision levels, different performance of turbine flowmeters. The WTD gas turbine flowmeter is equipped with both a mechanical counter and a gas volume corrector. Compared with the traditional flowmeter with only a single display data, the WTD gas turbine flowmeter can better meet the various observation needs of customers, and is more direct and simple.

| Characteristics

1. High precision, good repeatability, wide range ratio (up to 1:20).

2. Using integrated rectifier, the front and rear straight pipe section requirements are lower (front ≥2DN, rear ≥1DN).

3. The volume correction instrument of the flow meter can be freely rotated about 360°, which can be easily read in various installation modes.

4. Low speed, high life, low pressure loss, high precision.

5. High precision digital temperature sensor and digital pressure sensor, and the digital pressure sensor with temperature compensation correction function, high pressure detection accuracy, good long-term stability, small temperature drift.
   

6. It can automatically detect the temperature and pressure value of the medium, and modify the temperature, prssure and compression factor, and convert the volume flow and total volume flow under the working condition to the standard state.

7. Using advanced micro-power high technology, low power consumption, long-term power supply with internal battery.

8. Using large capacity data storage, with data tamper-proof function, automatically record the modification of key data and historical data.

9. Real-time data storage to prevent data loss during battery replacement or power failure, internal parameters can be permanently saved in case of power failure.

10. It can be embedded 4G or NB wireless modules, can form a variaty of forms of wireless meter reading system, by the built-in battery power supply to achieve a limited number of wireless transmission (once a day), no external power supply, convenient and practical. Or an external power supply to achieve unlimited data transmission.

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 Operating Principle

When the fluid passes the flowmeter, it is rectified and accelerated under the action of the leading fluid (or the rectifier charger). As the flow direction of the blade and the fluid is at a certain Angle, the rotating torque of the turbine is generated. After overcoming the friction torque and the resistance moment, the turbine starts to rotate. In a certain flow range, the angular velocity of turbine rotation is approximately proportional to the volume flow of fluid. Drive the mechanical counter through the mechanical structure. According to the principle of electromagnetic induction, the magnetic sensor is used to induce a pluse signal proportional to the volume flow rate of the fluid from the synchronous rotation of the signal plate, and the signal is sent to the volume correction instrument, and the temperature, pressure and other signals are processed togeter, respectively displayed on the display screen.  

• Drive the mechanical counter through the mechanical structure.

• According to the principle of electromagnetic induction, the magnetic sensor is used to induce a pulse signal proportional to the volume flow rate of the fluid from the synchronous rotation of the signal plate, and the signal is sent to the volume correction instrument, and the temperature, pressure and other signals are processed together, respectively displayed on the display screen. Its structure is shown in the figure below.

FIG.1  Structure diagram of gas turbine flowmeter

| Design Advantages

• The instrument core model adopts the integral extraction type, which is easy to install, easy to maintain and clean.

FIG.2  Instrument core component

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 Technical Performance Index

• Accuracy level:

1. In its specified flow range and working conditions, the accuracy level of the flowmeter is 1.0 and 1.5:

   Level  1.0: 0.2Q_max～Q_max: ±1.0%; Q_min～0.2Q_max: ±2.0%

   Level  1.5: 0.2Q_max～Q_max: ±1.5%; Q_min～0.2Q_max: ±3.0%

2. Temperature indication error: ≤±0.5℃

3. Pressure indication error: ≤±0.2%

• Mechanical performance index:                                                                                                           

  Table 1  Basic parameter

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 Overall Dimensions and Installation

The dimensions of the flowmeter are shown in the FIG.3 below, and the dimensions are listed in Table 2. The flowmeter adopts a flange connection mode, and the size of the flowmeter complies with GB/T9119-2010.

FIG.3  External dimensions

Table 2  Dimensions data

Unit: mm

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 Order Instructions

• When ordering this product, the user should select the appropriate specifications according to the nominal pressure of the pipeline, the maximum pressure of the medium, the temperature of the medium, the flow range, and the environmental conditions, and select the appropriate electronic instrument head according to the actual needs.

• Please fill in the following form correctly when ordering.

FIG.4  Ordering information