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电容式液位计原理以及安装现场注意事项

时间:2019-03-16 00:00 编辑:[db:编辑] 点击:
span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: 20px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;"> span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: 36px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">  /span>/span>a style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-size: 36px; text-decoration: underline;" href="http://www.hgwp.cn/" target="_self">span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-size: 36px;">strong style="margin: 0px; padding: 0px;">电容式液位计/strong>/span>/a>span style="font-size: 36px;">span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">是利用电容量的变化来测量容器内介质物位的测量仪器,测量的过程主要就是依赖两个电之间的电容量变化,也就是说电容液位计的灵敏度是取决于两个介质,气体、和液体的介电常数的差值。电容液位计的测量必须保证两个介质的介电常数保持致,否则介电常数变化会直接导致误差的产生。/span>br style="margin: 0px; padding: 0px; color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;"/>span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">    /span>strong style="margin: 0px; padding: 0px; color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">电容式液位计安装要求须知:br style="margin: 0px; padding: 0px;"/>/strong>span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">    1、露天安装时,探头线不能裸露于容器以外,以免雨天探线着水出现测量误差。/span>br style="margin: 0px; padding: 0px; color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;"/>span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">    2、外壳或接线盒下部的不锈钢过程连接部件,必须可靠与容器外壁连接(接地),其接触电阻不能大于2./span>br style="margin: 0px; padding: 0px; color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;"/>span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">    3、在正常工作中,探线在容器内不能有较大的摆动幅度,否则会出现信号不稳定现象。/span>br style="margin: 0px; padding: 0px; color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;"/>span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">    4、探线安装时,应尽量远离容器内壁,小距离不能<100mm。当受条件限制,距离<100mm时,探线与容器的距离必须保证相对固定。/span>br style="margin: 0px; padding: 0px; color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;"/>span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">    5、对单线App探,多余部分可以通过过程联接件上端拉出后剪掉,然后拧紧押金螺栓,而双绞线探,多余部分可盘扎在被测液面以上,不允许将多余部分盘绕在容器底部或有效测量段。/span>br style="margin: 0px; padding: 0px; color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;"/>span style="color: rgb(64, 64, 64); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: 宋体; font-size: x-small; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">    6、在容器内有搅拌或液体可能产生大量气泡时,为保护探和避免液体波动及气泡而产生的虚假液位,可能容器内放置已内径>80mm金属或非金属管,管的下端应开口货流进液孔,液面以下留排气孔,使用金属管时,应保证探线在管内位置相当稳定,必要时对探线加支撑拉直。/span>/span>

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