两台同型号法兰式液位变送器相同环境显示值不一致的?-压力仪表制造厂家
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两台同型号法兰式液位变送器相同环境显示值不一致的?

两台同型号法兰式液位变送器相同环境显示值不一致的?/某厂蒸汽总管上的两台两法兰式液位变送器测量饱和蒸汽压力(蒸汽压力为0.8MPa、温度175℃),蒸汽总管上两个压力取压点相距20米,选用润中单晶硅直连式法兰式液位变送器(YR-ER102-BFA2NN1NNC 0-1.6MPa),其中一台压变为电厂温压补偿用,信号进入电厂蒸汽流量积算仪,另一台压变为分厂做为蒸汽管网压力监控用压变,信号进分厂DCS。法兰式液位变送器显示偏差可能原因分析
Two flange type liquid level transmitters of the same model with different display values in the same environment? / two flange type liquid level transmitters on the main steam pipe of a certain plant measure the saturated steam pressure (steam pressure is 0.8MPa, temperature is 175 ℃), the distance between the two pressure tapping points on the main steam pipe is 20m, and the direct connection flange type liquid level transmitter (yr-er102-bfa2nn1nnc) of moistening monocrystalline silicon is selected 0-1.6mpa), one of which is used for temperature and pressure compensation of the power plant, the signal enters the steam flow totalizer of the power plant, the other is used for pressure monitoring of the steam pipe network by the branch plant, and the signal enters the DCS of the branch plant. Analysis of the possible causes of the display deviation of the flange type liquid level transmitter
1、法兰式液位变送器本身故障或超差。
1. Flange type liquid level transmitter is faulty or out of tolerance.
2、安装问题或导压管堵塞、泄漏。
2. Installation problem or blockage and leakage of impulse pipe.
3、线路开路或接错。
3. The line is open or wrongly connected.
4、中间卡件问题(配电器或安全栅坏或DCS系统卡件故障)。
4. The middle card is faulty (the distributor or safety barrier is broken or the card of DCS system is faulty).
两台同型号法兰式液位变送器相同环境显示值不一致的?/处理前安全措施
Safety measures before treatment for two flange type liquid level transmitters with the same environmental display value inconsistent
维护前,办理工作票,作业人员穿好劳动防护用品,防烫服以及防烫手套。
Before maintenance, work permit shall be handled, and operators shall wear labor protection articles, anti scalding clothes and anti scalding gloves.
两台同型号法兰式液位变送器相同环境显示值不一致的?/故障判断思路
Two flange liquid level transmitters of the same model have different display values in the same environment
1、电厂使用的单晶硅直连式法兰式液位变送器 经技术监督局检定过,仪表精度满足要求,所以着重检查分厂压变;
1. The single crystal silicon direct connected flange type liquid level transmitter used in the power plant has been verified by the Technical Supervision Bureau, and the instrument accuracy meets the requirements, so the pressure transformer of the branch plant is mainly inspected;
2、将分厂压变拆下,现场校验没问题,现场检查发现,华恒仪表的客户在分厂法兰式液位变送器安装在管廊下(管廊高度6米),法兰式液位变送器安装标高1.2米,电厂法兰式液位变送器采用短安装,即法兰式液位变送器一次阀后直接加冷凝圈后安装法兰式液位变送器。
2. The branch pressure transformer was removed, and there was no problem in the field calibration. The field inspection found that the customers of Huaheng instrument installed the flange type liquid level transmitter under the pipe gallery (the height of the pipe gallery is 6m), and the installation elevation of the flange type liquid level transmitter was 1.2m. The flange type liquid level transmitter of the power plant was installed in short installation, that is, the flange type liquid level transmitter was installed after the primary valve of the flange type liquid level transmitter was directly added with a condensation ring 。
两台同型号法兰式液位变送器相同环境显示值不一致的?/ 根本原因
Root cause of inconsistency between two flange type liquid level transmitters in the same environment
华恒仪表的用户反馈的问题是因为两台直连式法兰式液位变送器的安装方式和位置不在一个水平面,存在高位差引起:分厂仪表和取压点之间存在5米高位差,有0.05MPa的静压差导致。
The problem fed back by users of Huaheng instrument is that the installation mode and position of two direct connected flange type liquid level transmitters are not in the same horizontal plane, resulting in high-level difference: there is a 5-meter high-level difference between the instruments of the branch plant and the pressure tapping point, resulting in a static pressure difference of 0.05Mpa.
作为立足于西北工业化自动仪表制造厂商:我们公司目前拥有三大技术实力,一是全隔离的智能电路处理单元技术,二是金属电容传感器的制造技术,三是全系列节流装置的多参量技术。
As a manufacturer of industrial automatic instruments based in Northwest China, our company has three major technical strength at present, one is the technology of fully isolated intelligent circuit processing unit, the other is the manufacturing technology of metal capacitance sensor, and the third is the multi parameter technology of the whole series of throttling devices.
华恒仪表公司基于原西仪的技术优势研发并改  进了电感式传感器和电路板的核心技术,拥有三十多年的仪变送器厂家生产及研发经验集。以及开始致力于HART协变送器厂家的探索和研发,是国内智变送器厂家及HART协议技术的开拓者,主营单法兰液位计,双法兰液位计,磁致伸缩液位计,卫生型法兰式液位变送器,高精度法兰式液位变送器,hart475手操器,静压式液位计,投入式液位计,一个将科技企业由外延式扩张进入内涵式扩张的助推器等,
Based on the technical advantages of the original Xiyi, Huaheng instrument company has developed and improved the core technology of inductive sensor and circuit board, with more than 30 years of experience in the production and development of instrument transmitter manufacturers. As a pioneer of HART protocol technology and smart transmitter manufacturers in China, we are mainly engaged in single flange liquid level meter, double flange liquid level meter, magnetostrictive liquid level meter, sanitary flange liquid level transmitter, high-precision flange liquid level transmitter, hart475 manual operator, hydrostatic liquid level meter, The investment type liquid level meter is a booster that transforms the scientific and technological enterprise from the extension type expansion to the connotation type expansion,


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