| 兩臺同型號法蘭式液位變送器相同環(huán)境顯示值不一致的? |
| 信息來源： 液位變送器廠家 | 2020-06-08 點擊量： 9432 |
兩臺同型號法蘭式液位變送器相同環(huán)境顯示值不一致的?/某廠蒸汽總管上的兩臺兩法蘭式液位變送器測量飽和蒸汽壓力(蒸汽壓力為0.8MPa、溫度175℃)，蒸汽總管上兩個壓力取壓點相距20米，選用潤中單晶硅直連式法蘭式液位變送器(YR-ER102-BFA2NN1NNC 0-1.6MPa)，其中一臺壓變?yōu)殡姀S溫壓補償用，信號進入電廠蒸汽流量積算儀，另一臺壓變?yōu)榉謴S做為蒸汽管網(wǎng)壓力監(jiān)控用壓變，信號進分廠DCS。法蘭式液位變送器顯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、法蘭式液位變送器本身故障或超差。
1. Flange type liquid level transmitter is faulty or out of tolerance.
2、安裝問題或?qū)汗芏氯⑿孤?br />
2. Installation problem or blockage and leakage of impulse pipe.
3、線路開路或接錯。
3. The line is open or wrongly connected.
4、中間卡件問題(配電器或安全柵壞或DCS系統(tǒng)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).
兩臺同型號法蘭式液位變送器相同環(huán)境顯示值不一致的?/處理前安全措施
Safety measures before treatment for two flange type liquid level transmitters with the same environmental display value inconsistent
維護前，辦理工作票，作業(yè)人員穿好勞動防護用品，防燙服以及防燙手套。
Before maintenance, work permit shall be handled, and operators shall wear labor protection articles, anti scalding clothes and anti scalding gloves.
兩臺同型號法蘭式液位變送器相同環(huán)境顯示值不一致的?/故障判斷思路
Two flange liquid level transmitters of the same model have different display values in the same environment
1、電廠使用的單晶硅直連式法蘭式液位變送器 經(jīng)技術(shù)監(jiān)督局檢定過，儀表精度滿足要求，所以著重檢查分廠壓變；
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、將分廠壓變拆下，現(xiàn)場校驗沒問題，現(xiàn)場檢查發(fā)現(xiàn)，華恒儀表的客戶在分廠法蘭式液位變送器安裝在管廊下(管廊高度6米)，法蘭式液位變送器安裝標高1.2米，電廠法蘭式液位變送器采用短安裝，即法蘭式液位變送器一次閥后直接加冷凝圈后安裝法蘭式液位變送器。
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 。
兩臺同型號法蘭式液位變送器相同環(huán)境顯示值不一致的?/ 根本原因
Root cause of inconsistency between two flange type liquid level transmitters in the same environment
華恒儀表的用戶反饋的問題是因為兩臺直連式法蘭式液位變送器的安裝方式和位置不在一個水平面，存在高位差引起：分廠儀表和取壓點之間存在5米高位差，有0.05MPa的靜壓差導致。
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.
作為立足于西北工業(yè)化自動儀表制造廠商:我們公司目前擁有三大技術(shù)實力，一是全隔離的智能電路處理單元技術(shù)，二是金屬電容傳感器的制造技術(shù)，三是全系列節(jié)流裝置的多參量技術(shù)。
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.
華恒儀表公司基于原西儀的技術(shù)優(yōu)勢研發(fā)并改 進了電感式傳感器和電路板的核心技術(shù)，擁有三十多年的儀變送器廠家生產(chǎn)及研發(fā)經(jīng)驗集。以及開始致力于HART協(xié)變送器廠家的探索和研發(fā)，是國內(nèi)智變送器廠家及HART協(xié)議技術(shù)的開拓者，主營單法蘭液位計,雙法蘭液位計,磁致伸縮液位計,衛(wèi)生型法蘭式液位變送器,高精度法蘭式液位變送器，hart475手操器,靜壓式液位計,投入式液位計，一個將科技企業(yè)由外延式擴張進入內(nèi)涵式擴張的助推器等，
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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