Instrumentation

1. Overview Equipment maintenance refers to routine care performed through cleaning, lubrication, inspection, adjustment, fastening, and minor correction, to ensure equipment maintains proper performance and technical condition.Effective maintenance reduces failure rates, minimizes downtime, and extends equipment life. 2. Maintenance Requirements for Critical, Precision, and Special Machinery 2.1 “Four Assignments” Principle To manage key equipment, enterprises […]

Inrush current is a familiar—but often misunderstood—phenomenon in industrial power systems.Many engineers know its damage can be immediate and costly, yet struggle to pinpoint where it comes from, how to measure it, or what to do about it. This article breaks down the essentials of inrush current: its definition, root causes, testing methods, and preventive

In manufacturing, many visible issues appear at the final stage—parts don’t fit, assemblies generate noise, performance fluctuates, or costs spiral.However, when engineers trace the root cause, they often discover that these problems arise much earlier—during the design phase—where tolerance selection and accuracy requirements were already misaligned. Tolerance grades and accuracy levels are fundamental to every

When discussing safety in factories, it’s common to hear: “We have alarms, interlocks, and safety valves.” However, real safety assessments go beyond simply asking “Do we have these systems?” and address three critical questions: What could go wrong? (Scenario identification) Is the risk low enough? (Risk assessment) If not, how reliable do the protective measures

Instrument calibration refers to using a reference standard to compare and verify the performance of a field instrument.Both devices measure the same process parameter, and the difference between the readings is used to determine whether the instrument falls within the allowable error range. Typical instruments that can be calibrated in the field include:pressure and differential

In instrument maintenance work, one of the most frustrating situations is troubleshooting without wiring diagrams.Facing a cabinet full of cables and checking them one by one is slow, error-prone, and often ends in wasted time. This article summarizes two practical methods that allow you to trace and verify instrument wiring even when no drawings exist,

And Why HAZOP Studies Often Fail to Prevent Accidents In many engineering projects, HAZOP has become a standard procedure.The meetings are held, the worksheets are completed, reports are issued, and everything is properly archived. From a compliance perspective, nothing seems wrong. Yet when an abnormal event or even a major accident occurs, one uncomfortable question

A Field Engineer’s Practical Guide to Finding the Real Root Cause For field instrumentation engineers, the most difficult part of troubleshooting is often not repairing the instrument itself, but identifying the real root cause of the failure. Very often, operators simply report: “The instrument is faulty.” However, they cannot clearly explain whether the problem is:

Introduction to Armored Resistance ThermometersArmored resistance thermometers are a combination of a metal protective tube, insulation material, and a resistance element. Typically, the resistance element is made of platinum wire (though nickel wire is also used), and the insulation material is magnesium oxide powder. The protective tube is commonly made of stainless steel. These thermometers

In industrial applications, the accuracy of temperature measurements directly impacts product quality, production safety, and process stability. However, many people have encountered issues such as inaccurate temperature readings despite choosing the right instruments, frequent rework due to improper installation, or even safety risks caused by selecting the wrong components in hazardous environments. In this guide,