Digital anti vibration flowmeter, compressed air flowmeter, vortex flow sensor

Description :

　　Qingdao Hesheng Zhiyuan Automation System Co., Ltd. Main products:

　　Digital anti vibration flowmeter, compressed air flowmeter, vortex flow sensor, shock resistant dynamic vortex flowmeter, steam vortex flowmeter for thermal power plants, compressed air vortex flowmeter, DN40 temperature and pressure compensation vortex flowmeter, 4-ton boiler steam flowmeter, chemical plant vortex flowmeter, air flowmeter, refinery vortex flowmeter, chemical plant vortex flowmeter, wide range vortex flowmeter, DN65 steam meter, heat exchange station vortex flowmeter, IC card vortex flowmeter, liquid vortex flowmeter, refinery vortex flowmeter, vortex flowmeter, etc

　　Qingdao Hesheng Zhiyuan Automation System Co., LtdDigital anti vibration flowmeterMeasurement of technical parameters for saturated steam, superheated steam, gas, and liquid media:

　　1. Caliber specifications: Flange mounting type: 15~500mm; Insertion type: 200~1000mm

　　2. Flow rate range: Gas: 5~70m/s Liquid: 0.2~7m/s

　　3. Accuracy level: Liquid 1.0% Steam, Gas 1.5% Insertion 2.5%

　　4. Repeatability: Liquid 0.3% steam, gas 0.5% plug-in 1.0%

　　5. Work pressure: ≤ 1.6Mpa or ≤ 2.5Mpa. If it is greater than 2.5Mpa, produce according to the order requirements

　　6. The release frequency f of the digital anti vibration flowmeter Karman vortex street is proportional to the flow velocity v, so the instantaneous flow rate can be calculated by measuring the Karman vortex street release frequency. Strouhal number is an important coefficient of vortex flowmeter. In the flat part of the curve where St ≈ 0.17, the release frequency of the vortex is proportional to the flow velocity, so the detection frequency f can be used to obtain the flow velocity v, and the volume flow rate can be calculated from v.

　　He Sheng ZhiyuanDigital anti vibration flowmeterInstallation and usage instructions:

　　1. The installation of vortex flowmeter should avoid the influence of strong electrical equipment, high-frequency equipment, strong switching power supply, high temperature, high humidity, and corrosive atmosphere.

　　2. When there is strong vibration in the pipeline, vibration reduction measures should be taken.Liaocheng flowmeterInstall anti vibration seats and add anti vibration pads at both upstream and downstream 2D locations.

　　3. The steam vortex flowmeter can be installed horizontally, vertically, and obliquely for measuring steam; The medium must fill the pipeline and have a certain back pressure.

　　4. The process pipeline should be concentric with the flow meter; The inner diameter of the process pipeline should be consistent with the inner diameter of the flow meter, otherwise a contraction tube or expansion tube should be installed.

　　5. The sealing gasket of the boiler feedwater vortex flowmeter cannot protrude into the pipeline, and the inner diameter of the sealing gasket can be 1-2mm larger than the inner diameter of the flowmeter.

　　6. If temperature and pressure compensation is required, the pressure tap should be located 3-5D downstream, and the temperature tap should be located 6-8D downstream.

　　7. The installation of digital anti vibration flow meters, compressed air flow meters, and vortex flow sensors requires stress detection. The on-site pipeline mechanical vibration of vortex flow meters is quite strong, which affects the normal operation of the instruments. What are the countermeasures? In this situation, the installation orientation of the flowmeter can be adjusted to ensure that the instrument can work properly. Mathematically proved the stable conditions for the formation of vortex streets downstream of a cylinder. Kaman's conclusion laid a theoretical foundation for the development and application of vortex flowmeters. When measuring gas flow on a horizontal pipeline, if the measured gas contains a small amount of liquid, the sensor should be installed at a higher position in the pipeline. After major countries issued standards, the International Organization for Standardization (ISO) began to develop international standards for vortex flowmeters and released them in the form of a draft standard (ISO/CD12764) in 1993. All of these indicate that the development, manufacturing, and application of vortex flowmeters have entered the era of standardization. The radiator structure adopts a horizontal structure, which transfers less heat to the amplification part than flow meters that use a vertical radiator structure. Moreover, it has a larger heat dissipation area and faster heat dissipation, making the sensor more reliable and has a longer lifespan.

　　Qingdao Hesheng Zhiyuan Automation System Co., LtdDigital anti vibration flowmeterPrecautions during installation:

　　When welding the flange and straight pipe section of the digital clamping type vortex flowmeter, the sensor cannot be welded together. During installation, the flow direction indicator of the sensor should be consistent with the fluid flow direction inside the pipeline.

　　Before installing the sensor, a sealing ring must be placed in the flange groove. The positions of pressure and temperature measurement points are as follows: the pressure measurement point is located 3-5 DN downstream of the sensor, and the temperature measurement point is located 5-8 DN downstream.

　　When measuring high-temperature media with a vortex flowmeter in a chemical plant, do not wrap the sensor connecting rod around it with insulation material.

　　The shielded cable connecting the sensor should be routed as far away as possible from strong electromagnetic field interference. It is not allowed to be laid together with high-voltage cables. Shielded cables should be shortened as much as possible and should not be coiled to reduce distributed inductance. The length should not exceed 100 meters.

　　Before installing the sensor on the Zaozhuang flowmeter, the pipeline must be cleaned. Remove impurities from the tube to avoid clogging the sensor after flow. The pipeline for measuring liquids must be filled with the measured liquid to prevent interference from bubbles.

　　Digital anti vibration flowmeter, compressed air flowmeter, vortex flow sensor probe standard material 304 probe can be applied to the vast majority of conventional media, including some corrosive media and saturated steam, superheated steam. Non special highly corrosive media do not require the use of special materials, as the latter are more expensive and have longer processing times. Since the late 1990s, intelligent vortex flowmeters have been introduced to the market. It overcomes the shortcomings of conventional vortex flowmeters, while the inherent advantages of vortex flowmeters continue to be utilized, taking the performance, functionality, and quality of vortex flowmeters to a new level. When repairing sensors, special attention should be paid to protecting the vortex generator and probe body. Do not disassemble the probe body without understanding the fault, in order to avoid damaging the probe body or sealing, which may cause leakage of the sensor. The dry calibration technology of vortex flowmeter has received attention from various aspects. Since the early 1980s, some domestic experts and scholars have realized the possibility of dry calibration of vortex flowmeters after analyzing their characteristics.

　　Qingdao Kesheng Zhiyuan Automation System Co., Ltd

　　189 Hui Xin 5483 Same number 1481

　　Q：3438-5007-67

AfterSalesService :

• Digital anti vibration flowmeter