Temperature And Pressure Compensated Gas Turbine Flow Meter (Natural Gas Flow Meter)

Description

The temperature and pressure compensated gas turbine flowmeter integrates a gas turbine flow sensor and a flow totalizer. Its main performance indicators are up to And the ideal instrument for gas trade measurement.

working principle
When the airflow enters the flow meter, it first passes through the rectifier with a special structure and is accelerated. Under the action of the fluid, the turbine overcomes the resistance torque and friction torque and starts to rotate. When the torque reaches balance, the rotational speed is stable. The rotational speed of the turbine is proportional to the gas flow, and the magnetic field is periodically changed by the magnet on the rotating transmitter disk, so that the pulse generator outputs a pulse signal with a frequency proportional to the flow rate. The microprocessor in the converter counts and calculates the pulse signal to obtain the working condition flow rate. At the same time, it detects the temperature and pressure of the medium, converts the working condition volume flow rate into the standard volume flow rate according to the volume correction model, and accumulates it to obtain the standard volume total amount. .

Calculation formula
For example: DN40 caliber gas turbine flowmeter, flow range 5-50m3/h, F-1 is set to 0 (instantaneous quantity displays mh, cumulative quantity displays m3), F-8 is set to 0.001, F-9 is set to 250ms, this This means that for every accumulated flow of 0.001 m, an equivalent pulse with a pulse width of 250ms and a duty cycle of 50% will be output, that is, the upper limit frequency is 1000/ (250*2)=2Hz, and the corresponding upper limit of flow is 0.001 * 2*3600-7.2 m3/h, when the instantaneous flow rate is greater than 7.2 m3/h, the frequency of the output equivalent pulse is still 2Hz, that is, the output is saturated.

Instrument coefficient compensation, that is, multi-point polyline correction of the instrument coefficient K (see P16), a total of 1 can be set to 6, (F, K) (i=1, 2,..., 6)

(1) F, is the original frequency, proportional to the flow rate, unit Hz;

К is the dimensionless relationship between the t coefficient at the E frequency point and the instrument coefficient K (P9 parameter), where K is the actual coefficient at the F frequency point, generally obtained by real flow calibration.

(2) Working principle of multi-point polyline correction. The frequency corresponding to the current flow rate Q is F:

F. >F, (i=12...18), according to the specific parameters built into the table, F is the frequency of the last correction point.

Specification

illustration

1The upper limit pressure loss is the pressure loss when the flow meter works at the upper limit flow point, the medium is air, and the temperature is normal.

2DN20, DN32, DN65, and DN125 are non-national standard products and need to be customized.

Installation location and requirements
1. It is strictly prohibited to weld the pipe flange online with the flow meter. The flow meter should be removed before welding. Before installing the flow meter, the debris, welding slag, and dust in the pipeline should be cleaned.

2. In order to facilitate maintenance and not affect the normal transportation of fluid, it is recommended to set up a bypass pipeline as shown in the figure above.

3. In order to prevent impurities from entering the flow meter, a filter must be installed.

4. The flow meter should be installed horizontally. It is recommended to install a steel expansion joint (compensator) on the back side of the straight pipe section after the flow meter. The expansion joint must meet the nominal diameter and nominal pressure requirements of the pipeline design. The expansion joint is used to compensate for pipeline stress and facilitate the installation and disassembly of the flow meter.

5. If vertical installation is required, please indicate this when ordering, and the product must be configured accordingly. When installed and used, the air flow direction should be from top to bottom.

6. When the flow meter is installed for outdoor use, it is recommended to add a protective cover to prevent rainwater immersion or hot sun exposure, which will affect the service life of the flow meter.

7. There should be no strong external magnetic field interference or strong mechanical vibration around the flow meter.

8. The flow meter needs to be reliably grounded, but it must not be shared with the ground wire of the strong current system.

Application scenarios

Packing & Delivery


FAQ
1. Q: What information need to be provided to choose the suitable model?
A: Application field, Nominal pressure ,Medium & medium temperture , Power supply , Output,
Flow range, Accuracy, Connection and other parameters.
2. Q: Are you a trade company or a manufacturer?
A: We are an ISO approved manufacturer specialized in level and flow measuring instruments.
OEM & ODM service are available. Welcome to visit us in China.
3. Q: What is your MOQ?
A: To start our cooperation, sample order is acceptable.
4. Q: What is your delivery date for the Intelligent Mini Micro Turbine Fuel Oil Diesel Flow Meter?
A: The delivery date is about 3-15 working days after receipt of payment.
5. Q: What is your payment terms?
A: We support T/T, PayPal ,Western Union.
For mass production order, it is 30% deposit in advance and 70% balance before shipment.
6. Q: Do you have a warranty for the Flow Meter?
A: Yes, we have the warranty of 12 months.

Suzhou Beite Smart Instrument Co., Ltd. was established in 2007.It is an automated instrument manufacturer integrating R&D, design, manufacturing, sales and system complete services.

After years of development, the company's new factory covers an area of ​​15 acres, with a workshop area of ​​4000m2. It has complete production and processing equipment. The electronics workshop has a modern SMT assembly line and a complete electronic design laboratory. The machinery workshop has multiple precision CNC lathes, ordinary lathes, CNC milling machines, fully automatic circumferential seam welding machines, drilling machines and other equipment. The calibration workshop has two liquid calibration test lines and one small and medium flow gas calibration test line. Each product has been actually calibrated and verified to ensure product quality.

The company has strict quality control in every aspect from product design, raw material procurement and processing, manufacturing and assembly, testing and inspection to product delivery, striving for zero defect products, and using scientific management, strict technology, sophisticated equipment, to ensure product quality. quality. The company's products, from hardware to software, all have the company's independent intellectual property rights.

The company's products are widely used in municipal administration, petroleum, chemical industry, metallurgy, pharmaceuticals, thermoelectric papermaking, food environmental protection and scientific research fields, and are exported to Southeast Asia, South America, Europe and other countries. Beite's integrity, strength and product quality have been recognized by the industry.

The company's main products include metal tube float (rotor) flowmeters, glass rotor flowmeters, plastic tube flowmeters, turbine flowmeters, thermal gas mass flowmeters, gas turbine flowmeters, intelligent electromagnetic flowmeters, vortex flowmeters, pipeline ultrasonic flowmeters, magnetic flap level meters, ultrasonic level meters, intelligent radar level meters, pressure transmitters, flow totalizers, batch control systems, etc. There are more than a dozen series and hundreds of varieties.