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如何正确选择投入式液位变送器进行液位测量?

发布时间:2019-11-12      发布人:泽天传感      点击:

投入式液位变送器也称静压式液位传感器,是对压力变送器技术应用的延伸和发展,它是基于所测液体静压与该液体高度成线性关系的原理,采用扩散硅或陶瓷敏感元件的压阻效应,电容压力敏感元件,将静压转成电信号。经过温度补偿和线性校正,转换成4-20mADC或者0-5V标准信号输出。投入式液位变送器的传感器部分(传感器头)可直接投入到被测介质中,变送器部分可用法兰或支架固定,安装使用极为方便。下图为一种典型的投入式液位变送器YWB230的实物图。

YWB230型投入式液位变送器

TOURUSHIYEWEIBIANSONGQIKEYISHIXIANDUISHUI、YOUJIHUZHUANGWUDETIJI、YEGAO、ZHONGLIANGDEZHUNQUECELIANG。YIBANDI,TOURUSHIYEWEIBIANSONGQIJUYOUYIXIATEDIAN:

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那么,如何正确选择合适的投入式液位变送器,投入式液位变送器选型时该注意些什么呢?选型时应重点考虑以下因素:

第一、首先要明确测量的介质是什么,有没有腐蚀性,是否含有高速运动的固体颗粒,浓稠度如何等,根据这些性质,选择合适的产品。例如,YWB040是一款防腐蚀的液位变送器,适合腐蚀性液体的液位测量,YWB160电容投入式液位变送器福彩快三可以实现对测量介质中有固体颗粒的液位测量;

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此外,还有一个很特殊的测量情况是差压式液位变送器,它是安装在液体容器的底部,通过表压信号反映液位高度。在制药、食品、化工行业液位测量控制过程中,盛装液体的容器经常处于有压的情况下工作,此时常规的静压式投入式液位变送器变不能满足这种情况的测量要求。本文源自泽天传感,福彩快三,转载请保留出处。