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Product characteristics and wiring of gas turbine flowmeters

Update: 2015-9-5 22:52:03 Click:
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Product characteristics and wiring of gas turbine flowmeters

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, 氮气 , 氧气 , 氢气 , 沼气 , 天然气 , 蒸汽等介质流体的流量测量 , 在测量工况体积流量时几乎不受流体密度、压力、温度、粘度等参数的影响。 The gas turbine flowmeter is mainly used for the flow measurement of medium fluids such as air , nitrogen , oxygen , hydrogen , biogas , natural gas , and steam in industrial pipelines. It is almost independent of fluid density, pressure, temperature, viscosity and other parameters when measuring the volume flow of working conditions Impact. , 维护量小。 No moving mechanical parts, so high reliability and low maintenance. , 也有数字脉冲信号输出 , 容易与计算机等数字系统配套使用 , 仪表参数能长期稳定。 There are analog standard signals and digital pulse signal output , which is easy to be used with digital systems such as computers . The meter parameters can be stable for a long time.

主要用于工业管道中空气 , 氮气 , 氧气 , 氢气 , 沼气 , 天然气 , 蒸汽等介质流体的流量测量 , 在测量工况体积流量时几乎不受流体密度、压力、温度、粘度等参数的影响。 The gas turbine flowmeter is mainly used for the flow measurement of medium fluids such as air , nitrogen , oxygen , hydrogen , biogas , natural gas , and steam in industrial pipelines. It is almost independent of fluid density, pressure, temperature, viscosity and other parameters when measuring the volume flow of working conditions. Impact. , 维护量小。 No moving mechanical parts, so high reliability and low maintenance. , 也有数字脉冲信号输出 , 容易与计算机等数字系统配套使用 , 仪表参数能长期稳定。 There are analog standard signals and digital pulse signal output , which is easy to be used with digital systems such as computers . The meter parameters can be stable for a long time. , 可靠性高 , 可在 -20 ℃~ 250 ℃的工作温度范围内工作。 The gas vortex flowmeter uses a piezoelectric stress sensor with high reliability , and can work in the operating temperature range of -20 ℃ ~ 250 ℃. It is a relatively advanced and ideal flow meter.

输出的脉冲频率信号不受流体物性和组分变化的影响,即仪表系数在一定雷诺数范围内仅与旋涡发生体及管道的形状尺寸等有关。 The pulse frequency signal output by the gas vortex flowmeter is not affected by the fluid physical properties and composition changes, that is, the meter coefficient is only related to the shape and size of the vortex generator and the pipeline within a certain Reynolds number range. But as a flow meter needs to detect the mass flow in the material balance and energy measurement, the output signal of the flow meter should monitor the volume flow and fluid density at the same time. The fluid properties and components have a direct impact on the flow measurement.

Gas vortex flowmeter is a new type of flowmeter for measuring fluid flow in closed pipes based on the Carmen vortex principle. Because of its good medium adaptability, it can directly measure the working volume flow of steam, air, gas, water, and liquid without temperature and pressure compensation. Equipped with temperature and pressure sensors, it can measure standard volume flow and mass flow, which is throttling. The ideal replacement for the flow meter. For the convenience of gas vortex flowmeters, the battery-powered on-site display gas vortex flowmeters adopt high-power consumption high-tech. They can be operated continuously for more than one year using lithium batteries, which saves the procurement and installation costs of cables and display instruments. Can display instantaneous flow rate, accumulated flow rate, etc. The temperature compensation integrated vortex flowmeter also has a temperature sensor, which can directly measure the temperature of the saturated steam and calculate the pressure, thereby displaying the mass flow of the saturated steam. Temperature and pressure compensation integrated type with temperature and pressure sensors for gas flow measurement can directly measure the temperature and pressure of the gas medium, thereby displaying the standard volume flow of the gas.

-- 尽可能采用一根完整的电缆线。 1. Wiring precautions for gas vortex flowmeters - Use a complete cable as much as possible. -Keep away from electrical noise sources (such as high-power transformers, motors, and strong power lines) as much as possible, and avoid parallel wiring with power power lines. -It is recommended to use non-soldering clamping lugs at the ends of thick wires. 10 倍时,两者不能安装在同一根导管内)。 -For waterproofing and mechanical damage, it is best to install the cable in a metal conduit, but there must be no high-power transmission cables in the same conduit. (The maximum power transmitted by a transmission cable is greater than the minimum power transmitted by the signal cable of the flow meter. At 10 times, both cannot be installed in the same catheter). -For areas where a strong external magnetic field exists, the axis of the detection device should be perpendicular to the magnetic flux direction of the external magnetic field or a high-permeability material should be used to shield the flow sensor or external magnetic source. -The connection of the explosion-proof turbine flow sensor cable must strictly comply with the relevant standards of explosion-proof amplifiers.

-- 屏蔽线只能一端接地,最好在显示仪表端接地。 2. Grounding problems of gas vortex flowmeters -The shielded wire can only be grounded at one end, and it is best to be grounded at the display meter end. 10 Ω。 -The grounding should be good and reliable, and the explosion-proof grounding resistance should be less than 10 Ω.
This article is organized and published by Runzhong Instrument Technology Co., Ltd.

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