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: […]
Instrument Failed Again? Read More »
Making the Right Engineering Choice Beyond “Contact” and “Non-Contact” Radar technology for level measurement is already well established in industrial applications.In oil & gas, chemical processing, energy, and water treatment, radar level transmitters have almost become the default solution. Yet in real projects, a recurring question remains: If both are radar technologies, why are some
Guided Wave Radar vs. Non-Contact Radar Level Measurement Read More »
Vortex flowmeters are widely used for measuring both liquid water and steam in industrial applications.Although the fundamental measuring principle remains the same, the physical properties of the media—such as density, viscosity, temperature, and pressure—lead to significant differences in installation requirements, compensation methods, and sensor selection. This article explains the common principles and key differences between
Differences and Common Principles of Vortex Flowmeters for Water and Steam Measurement Read More »
Check These Critical Installation Details First In industrial applications, accurate temperature measurement is essential for process control, product quality, and operational safety.However, in many real-world projects, engineers often encounter the same frustrating situation: The instrument is correctly selected, but the measured temperature is still inaccurate. In most cases, the root cause is not the sensor
Temperature Measurement Inaccuracy? Read More »
Mass flow meters, such as Coriolis mass flow meters, require calibration of the zero point and full scale to ensure measurement accuracy. This process eliminates zero drift and range deviations, ensuring optimal performance. Below are the detailed steps and key considerations for calibration. 1. Pre-calibration Preparations 1.1 Check Operating Conditions Correct Installation: Ensure the flow
How to Calibrate the Zero Point and Full Scale of Mass Flow Meters Read More »
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
What to Pay Attention to When Servicing Resistance Temperature Detectors (RTDs) Read More »
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,
In many automation systems, solving multivariable control problems using a single-variable PID controller involves transforming the multivariable problem into multiple single-variable feedback control loops. This approach can be broken down into two steps: 1. Pairing The design of the control system first aims to balance the number of controlled variables with the number of manipulated
How PID and APC Achieve Multivariable Control Read More »
At the project initiation stage of many automation systems, the discussions often center around several key issues: Should we use PLC or DCS? Which industrial network should we choose? Should we jump straight into “smart manufacturing”? These questions are undoubtedly important, but they do not determine whether a system will remain useful five or ten
The Core Issues in Automation Projects Read More »
In the field of instrumentation, theoretical knowledge is like the wrench in your hand—often overlooked but essential when it’s needed. Whether you’re preparing for certification exams or looking to strengthen your practical skills, understanding circuit diagrams, sensor principles, and troubleshooting logic is crucial. This series will continue to update, offering both theoretical foundations and practical
How to Accurately Measure DC Current Read More »
