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Measures for dust and corrosion prevention of float level gauge

在仪表行业中,浮标液位计是不可缺少的监控设备,对维持化工生产线的顺利运行起到了一定的作用,同时也起到了保护生命财产安全的作用。化学也用仪器、仪表设备暴露在很长一段时间里,经受住了仪器很容易腐蚀,那么它需要我们做好防腐,防尘的工作,仪器日常维护和检查管理不仅可以提高仪器的精度,可以延长仪器的使用寿命,下面将跟随浮标液位计厂家来探究浮标液位计是如何做好防尘防腐蚀工作的。

现场仪表的防腐维护:在订货时选择耐腐蚀的金属或非金属材料来制造仪表部件,是工业仪表防腐的基本方法。例如,由钛和钽制成的仪器部件对氯化介质有很强的耐腐蚀能力。聚四氟乙烯制成的仪表部件和垫片也广泛应用于各种腐蚀介质环境。

加保护层:在仪表零部件上加保护层。它是工业上一种很常见的防腐方法。根据保护层的材质和形成原理的不同,可分为以下三种类型:

A.金属保护层。包括喷涂、电镀、热浸、渗碳等。

B.非金属保护层。如油漆、耐酸水泥、橡胶、塑料、搪瓷等;

C.非金属保护膜是在金属表面经化学处理后生成氧化膜、磷酸盐膜等保护膜;

膜片隔离:耐腐蚀膜片用于将隔离液或充液从被测介质中分离出来,达到防腐的目的。适用于腐蚀性强的介质,难以使用管隔离或容器隔离的场合,通常适用于压力测量,不应用差压测量。隔离膜片要有弹性、不透水,如常用的膜片式压力表、单法兰防腐压力变送器等。

浮标液位计的防尘维护:浮标液位计外防尘的方法是在仪器上盖上保护罩或装在密封的盒子里。为了保护被测介质中的灰尘、杂质和颗粒,除采取减少灰尘等措施防止堵塞外,通常采用加厚进气管、加除尘器、安装吹气装置、安装防护网的方法。粗进气管常与除尘器、吹洗装置结合使用。当使用无环形腔的孔板测量流量时,可在压力出口直接使用1.5~2m厚的进气管,并可安装堵头,以便清洁孔板或在维修时作为通风口使用。为防止负压管内结晶,液位测量时可在负压管内使用蒸汽冷凝吹法。对于水分气体的测量,可以使用水分离器,这在压力和流量测量中很常见。

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