Accuracy of LUGB-25 biogas vortex flowmeter in Beijing

Description :

　　1、 Product Overview: LUGB vortex flowmeter is mainly used for flow measurement of industrial pipeline media fluids, such as gases, liquids, vapors, and other media. Its characteristics are small pressure loss, large range, high accuracy, and almost unaffected by parameters such as fluid density, pressure, temperature, viscosity, etc. when measuring volumetric flow rate under working conditions. No movable mechanical parts, therefore high reliability and low maintenance. The instrument parameters can remain stable for a long time.The vortex flowmeter adopts a piezoelectric stress sensor, which has high reliability and can operate within the working temperature range of -50 ℃ to+350 ℃.It has both analog standard signals and digital pulse signal outputs, making it easy to use in conjunction with digital systems such as computers. It is a relatively advanced and ideal flow meter.

　　2、 Technical parameters 1. Measurement medium: gas, liquid, vapor; 2. The caliber specification for flange card mounted calibers is 25, 32, 50, 80, and 100; 3. The selection of flange connection caliber is 100, 150, 200; 4. The normal measurement range for flow rate is Reynolds number 1.5 × 104 to 4 × 106; Gas velocity of 5-50m/s; Liquid 0.5-7m/s; 5. Measurement accuracy of 1.0 level and 1.5 level; 6. Temperature of the tested medium: normal temperature -25 ℃ -100 ℃; 7. High temperature -25 ℃~150 ℃ -25 ℃~250 ℃; 7. Output signal pulse voltage output signal high level 8-10V low level 0.7-1.3V; 8. Pulse duty cycle of about 50%, transmission distance of 100m; 9. Pulse current remote transmission signal 4-20mA, transmission distance of 1000m; 10. Instrument usage environment temperature: -25 ℃~+55 ℃ Humidity: 5-90% RH50 ℃; 11. Material: stainless steel, aluminum alloy; 12. Power supply DC24V or lithium battery 3.6V;

　　3、 Flow Range Table

　　Table 1: Liquids and Gases (Unit: m3/h)

　　4、 Product Selection Table

Note: For diameters above DN300, it is recommended to use a plug-in vortex flowmeter, which can be customized.

　　5、 Installation precautions

　　Vortex flow meters are sensitive to flow velocity distribution distortion, rotational flow, and flow pulsation in pipelines. Therefore, the installation conditions of pipelines on site should be fully taken into account, and the requirements of the manufacturer's instructions should be followed. 1. Vortex flowmeter can be installed indoors or outdoors. If installed in underground wells, there is a possibility of flooding, and submersible sensors should be selected. Sensors can be installed horizontally, vertically, or obliquely on pipelines, but when measuring liquids and gases, attention should be paid to the installation position to prevent interference from bubbles and droplets. 2. Vortex flowmeters must ensure that the upstream and downstream straight pipe sections have the necessary length. There may be differences in data in various materials, which may be due to the lack of standardization of vortex generators, and the impact of differences in shape and size remains to be verified; The experimental research on the necessary length of straight pipe sections for various types of flow blocking components is still insufficient, that is, it is not yet mature. Compared with throttling differential pressure flow meters, this work is still in its initial stage. 3. Connection between sensors and pipelines. Pay attention to the following issues when connecting with pipelines. a、 The inner diameter D of the upstream and downstream piping is the same as the inner diameter D 'of the sensor, and the difference satisfies the following condition: 0.95D ≤ D' ≤ 1.1D. b、 The piping should be concentric with the sensor, and the coaxiality should not be less than 0.05D ′ c. The sealing gasket should not protrude into the pipeline, and its inner diameter can be 1-2mm larger than the inner diameter of the sensor

Physical picture display of vortex flowmeter (integrated pulse without display, integrated display output, integrated temperature and pressure compensation, integrated plug-in)

AfterSalesService :

• Biogas vortex flowmeter