世伟洛克样品探针模块 (SPM) 是预设计的解决方案，用于在线工艺分析仪，测量气体和液体流中关键成分的浓度以维持精确的过程控制。SPM 由一个焊接式取样探针 (SPW) 或可伸缩式取样探针 (SPR) 和一个关断和排放式样品探针阀 (SPV) 组成。取样探针与取样探针阀结合使用能够提高安全性、样品纯度和及时性。
安全
由于工艺管线通常在高温高压条件下运行，因此安全提取供在线分析仪使用的工艺样品比较困难。通过在取样口使用一个单关断排放阀，可以适当地隔离工艺流体，并通过排放阀释放分析系统压力。
样品纯度
提取的样品必须不含任何会损坏分析仪的颗粒。或者，将探针安装到工艺管路中间，可帮助确保提取代表性样品；探针还可以帮助过滤工艺颗粒。
及时性
为了有效地控制工艺，在线分析仪必须快速接收样品以支持及时的工艺调整。尽可能地缩短到分析仪的延时的一种方法是减小分析系统容积。与使用喷嘴收集样品相比，使用样品探针提取样品可大大减少系统容积。
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