导波雷达液位计测量时数值突然变零？

(function(){ let w = window.innerWidth; function setHeaderCssVar() { const headerEle = document.getElementById('shoplaza-section-header'); if(!headerEle){ return }; document.body.style.setProperty('--window-height', `${window.innerHeight}px`); document.body.style.setProperty('--header-height', `${headerEle.clientHeight}px`); const mdScorllHideEle = headerEle.querySelector('.header__mobile .header__scroll_hide'); if (mdScorllHideEle) { document.body.style.setProperty('--header-scroll-hide-height-md', `${mdScorllHideEle.clientHeight}px`); } const pcScorllHideEle = headerEle.querySelector('.header__desktop .header__scroll_hide'); if (pcScorllHideEle) { document.body.style.setProperty('--header-scroll-hide-height-pc', `${pcScorllHideEle.clientHeight}px`); } } function handlResize() { if(w == window.innerWidth){return}; w = window.innerWidth; setHeaderCssVar(); }; function init(){ setHeaderCssVar(); window.removeEventListener('resize', window._theme_header_listener) window._theme_header_listener = handlResize; window.addEventListener('resize', window._theme_header_listener); } init(); })();

导波雷达液位计测量时数值突然变零？

Dec 05, 2024 by nuoying-subsite2-flowmeter

原理

发射的脉冲信号沿缆绳传导至仪表电子线路部分，微处理器对此信号进行处理，识别出微波脉冲在物料表面所产生回波。正确的回波信号识别由智能软件完成，距离物料表面的距离D与脉冲的时间行程T成正比:D=CXT/2(其中C为光速)，因空罐的距离E已知，则物位L为:L=E-D。

故障现象

✦工作人员在 DCS 系统操作时发现数值显示 0mm，调用该表历史趋势曲线，罐内液位测量值突然间由正常值 1102mm 呈垂线状态降低到 0mm 液位附近。

过程检查

1、由于罐底部积水，而水的介电常数比馏分的介电常数大，即水的反射波强度大于馏分反射波的强度，导致直接测量水的液位，忽略了待测液体的液位。

2、由于罐脱水不及时，导致罐底积水，工艺介质形成油水两相，导波雷达液位计直接检测水的反射波，数值显示 0mm。

3、导波雷达液位计探杆过长。液位计外筒法兰间距是 1700mm，液位计的探杆长度为 1900mm，探杆底端超过下法兰伸入到外筒底部区域。当罐底积水时，外筒底部同样积水，并且无法通过下法兰排出。

处理方法

1、加强对罐水包液位的监控，定期进行排水。

2、仪表人员对雷达探杆长度进行缩短，确保探杆末端在外筒下法兰中心处。

029-8956 5855

2851571250@qq.com

159 0105 0329

英文网址:www.radar-leveltransmitter.com
地址：陕西省西安市高陵区丝路融豪工业城一期V5栋

029-8956 5855

2851571250@qq.com

159 0105 0329

英文网址:www.radar-leveltransmitter.com
地址：陕西省西安市高陵区丝路融豪工业城一期V5栋

(function () { const TAG = "spz-custom-discount-popup-bxgy"; class SpzCustomPlacementPopup extends SPZ.BaseElement { constructor(element) { super(element); this.deviceTypeMap = { PD_PC_MOBILE: "PD_PC_MOBILE", PD_PC: "PD_PC", PD_MOBILE: "PD_MOBILE" }; this.reportEventMap = { PE_IMPRESSION: 'PE_IMPRESSION',//曝光事件 PE_CLICK: 'PE_CLICK',//点击事件 } this.popup_z_index = 1050; } static deferredMount() { return false; } buildCallback = () => { this.action_ = SPZServices.actionServiceForDoc(this.element); this.templates_ = SPZServices.templatesForDoc(this.element); this.xhr_ = SPZServices.xhrFor(this.win); this.setupAction_(); this.viewport_ = this.getViewport(); } mountCallback = () => { } // 节流处理每5s内多次点击算一次点击上报 throttleReport = this.win.SPZCore.Types.throttle( this.win, (data) => { this.reportData(data) }, 5000 ) // 上报数据 reportData = async(data) => { const reqBody = { placement_id: data.placement_id, event: data.event } this.xhr_.fetchJson(`/api/storefront/promotion/placement/data/report`, { method: "post", body: reqBody }).then((res)=>{ // todo ... }) } doRender_ = (data) => { const popupList = data.popupList || []; if(popupList.length){ // 内容配置序列化字符转化 popupList.forEach(item => { item.parseConfig = JSON.parse(item.config); }) } return this.templates_ .findAndRenderTemplate(this.element, {popupList}) .then((el) => { const children = this.element.querySelector('*:not(template)'); children && SPZCore.Dom.removeElement(children); this.element.appendChild(el); }).then(() =>{ popupList.forEach(item => { // buy x get y 弹窗渲染 this.showPopup(item); }) }) } showPopup = async(itemData) => { // 展示弹窗符合展示条件的弹窗 const $lightbox_item = document.querySelector(`#popup_bxgy_${itemData.id}`); $lightbox_item && SPZ.whenApiDefined($lightbox_item).then((api)=> { const isPC = this.viewport_.getWidth() >= 768; const isMobile = this.viewport_.getWidth() < 768; const isMatchPCDevice = itemData.device === this.deviceTypeMap.PD_PC_MOBILE || itemData.device === this.deviceTypeMap.PD_PC; const isMatchMobileDevice = itemData.device == this.deviceTypeMap.PD_PC_MOBILE || itemData.device === this.deviceTypeMap.PD_MOBILE; if((isPC && isMatchPCDevice) || (isMobile && isMatchMobileDevice)) { // 根据推送时间延迟展示弹窗 setTimeout(() => { $lightbox_item.style.zIndex = this.popup_z_index; this.popup_z_index ++; api.open(); }, itemData.delay_seconds * 1000); } }) } setupAction_ = () => { this.registerAction('handleTrack', async(invocation) => { // 如果是主题编辑器则不用处理 if(window.top !== window.self) { return; } const data = invocation.args; const event = data.event; // 点击上报节流处理 if(event === this.reportEventMap.PE_CLICK) { await this.throttleReport(data); } else { this.reportData(data); } }); this.registerAction('handleLinkto', (invocation) => { const url = invocation.args.url; const isNewOpen = invocation.args.isNewOpen; const target = isNewOpen ? '_blank' : '_self'; if(url) { window.open(url, target); } }); } triggerEvent_(name, data) { const event = SPZUtils.Event.create(this.win, `${ TAG }.${ name }`, data || {}); this.action_.trigger(this.element, name, event); } isLayoutSupported(layout) { return layout == SPZCore.Layout.CONTAINER; } } SPZ.defineElement(TAG, SpzCustomPlacementPopup) })()

(function () { const TAG = "spz-custom-discount-placement"; class SpzCustomDiscountPlacement extends SPZ.BaseElement { constructor(element) { super(element); this.placementTypeMap = { PTT_POPUP: "PTT_POPUP", PTT_BANNER: "PTT_BANNER" }; this.placementTemplateMap = { PT_POPUP_BUY_X_GET_Y: "PT_POPUP_BUY_X_GET_Y", PT_BANNER_BUY_X_GET_Y: "PT_BANNER_BUY_X_GET_Y" }; this.progressMap = { PROGRESS_ONGOING: "PROGRESS_ONGOING", PROGRESS_NOT_STARTED: "PROGRESS_NOT_STARTED", PROGRESS_FINISHED: "PROGRESS_FINISHED", PROGRESS_PAUSED: "PROGRESS_PAUSED" }; } static deferredMount() { return false; } buildCallback = () => { this.action_ = SPZServices.actionServiceForDoc(this.element); this.templates_ = SPZServices.templatesForDoc(this.element); this.xhr_ = SPZServices.xhrFor(this.win); this.setupAction_(); this.viewport_ = this.getViewport(); } mountCallback = () => { this.handlePlacement(); } // 上报数据 reportData = async(data) => { const reqBody = { placement_id: data.placement_id, event: data.event } const url = `/api/storefront/promotion/placement/data/report`; this.xhr_.fetchJson(url, { method: "post", body: reqBody }).then((res)=>{ // todo ... }) } // 资源位数据获取 getplacementList = async() => { const reqBody = { page_id: window.SHOPLAZZA.meta.page.template_type } const url = `/api/storefront/promotion/placement/list` const data = await this.xhr_.fetchJson(url, { method: "post", body: reqBody }) return data; } handlePlacement = async() => { const res = await this.getplacementList(); const BXGYPopupList = res.list.filter(item => (item.placement_type == this.placementTypeMap.PTT_POPUP && item.placement_template == this.placementTemplateMap.PT_POPUP_BUY_X_GET_Y)); if(BXGYPopupList.length) { const $spz_custom_popup_bxgy = document.querySelector('#spz_custom_popup_bxgy'); SPZ.whenApiDefined($spz_custom_popup_bxgy).then((api)=> { api.doRender_({popupList: BXGYPopupList}); }) } } doRender_ = (data) => { const renderData = data || {}; return this.templates_ .findAndRenderTemplate(this.element, renderData) .then((el) => { const children = this.element.querySelector('*:not(template)'); children && SPZCore.Dom.removeElement(children); this.element.appendChild(el); }) } setupAction_ = () => { this.registerAction('handleTrack', (invocation) => { const data = invocation.args; this.reportData(data) }); } triggerEvent_(name, data) { const event = SPZUtils.Event.create(this.win, `${ TAG }.${ name }`, data || {}); this.action_.trigger(this.element, name, event); } isLayoutSupported(layout) { return layout == SPZCore.Layout.CONTAINER; } } SPZ.defineElement(TAG, SpzCustomDiscountPlacement) })()

© 2025 nuoying-subsite2-flowmeter 产品中心关于诺盈联系我们新闻