讲清测量原理与工作方式，理解读数背后的物理化学过程。How the measurement works, and the physical and chemical processes behind the reading.
浊度与 MLSS 都用光学散射法测量，但量程、标定方式与干扰因素差别很大。本文讲清两者的原理差异、量程选择、清洗方式与常见干扰。Turbidity and MLSS are both measured by optical scattering, but they differ greatly in range, calibration and interference. This article explains the principles, range selection, cleaning options and common interferences.
阅读全文Read more 原理科普 / Measuring principlesCOD 与氨氮在线分析仪多为湿化学法，涉及试剂消耗与废液处置。本文讲清消解比色法与 UV 法的差异、试剂构成、维护周期与选型时容易忽略的成本项。Online COD and ammonia analysers are mostly wet-chemical instruments involving reagent consumption and waste disposal. This article covers digestion colorimetry versus the UV method, reagent composition, maintenance intervals and cost items that are easy to overlook.
阅读全文Read more 原理科普 / Measuring principles余氯是饮用水与泳池水消毒控制的关键指标。本文区分游离氯、化合氯与总氯，讲清 DPD 比色法与电极法的原理、影响因素与选型建议。Residual chlorine is the key disinfection control parameter for drinking water and pools. This article distinguishes free, combined and total chlorine and explains the principles, influencing factors and selection of DPD colorimetry and the electrode method.
阅读全文Read more 原理科普 / Measuring principles叠螺式污泥脱水机靠固定环与游动环的相对运动实现连续脱水与自清洗。本文讲清它的结构、脱水过程、选型参数与常见故障处理。A screw-press (volute) dehydrator dewaters continuously and self-cleans through the relative movement of fixed and moving rings. This article explains its structure, the dewatering process, sizing parameters and common troubleshooting.
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