The core logic behind the source calibration method is to trace the origin of data (such as original collection devices, reference documents, or authoritative data sources) and verify its accuracy by comparing it with a “source standard.” This method is especially suitable for data types where the origin is traceable and there is an objective […]
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An outstanding chemical instrumentation technician is defined by a combination of solid technical knowledge, process adaptation, safety compliance, and efficient collaboration. Excellence in this field requires a multifaceted approach, focusing on continuous improvement across several areas. Below are key directions for becoming an outstanding technician: 1. Mastering Technical Skills: From “Basic Understanding” to “Expertise” 1.1
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In engineering projects, the intersection of process and electrical instrumentation design often becomes a hotspot for issues. From installation interfaces to instrument gas leaks, from design defects in complete sets of equipment to the “three-proof” requirements for control cabinets, these seemingly minor details can lead to significant risks during construction. Why do these problems keep
The Three Major Hazards of Direct Lightning Strikes Direct lightning strikes can cause three primary types of damage: electrical effects, thermal effects, and mechanical effects. Electrical EffectsThe electrical impact of a lightning strike is reflected in the high-voltage surge, which can range from several hundred thousand to millions of volts. When lightning strikes equipment, it
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In high-risk environments such as petrochemical plants, gas stations, tunnels, and laboratories, toxic and combustible gas detectors serve as the first line of defense for both personnel safety and the stable operation of equipment. So, do these detectors require verification or calibration? What is the difference between these two processes? Who is responsible for them,
Calibration and Verification of Toxic and Combustible Gas Detectors Read More »
In the practice of multi-loop control system tuning, it is essential to maintain a global perspective and a systemic view. Focusing solely on the disturbance rejection of individual control loops, without considering their interactions with other loops, often leads to suboptimal performance. Missteps in cascade control tuning, for instance, often stem from a lack of
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Instrument failures can be complex and difficult to diagnose immediately. It’s important to stay calm and analyze the situation step by step. The faults can generally be divided into three sections: on-site detection, intermediate transmission, and terminal display. Seasonal factors, such as preventing high temperatures in summer and freezing in winter, should also be considered.
Common Faults and Troubleshooting of On-Site Instruments Read More »
As an instrument technician, it’s essential to learn how to proactively reflect on your work, summarize your experiences, and improve your maintenance skills. This process is key to transforming repetitive tasks into expert-level capabilities. Below is a comprehensive framework that moves from “reflection” to “improvement,” which you can apply based on your own experiences. Part
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1. Do You Really Understand Explosion-Proof Nameplates? In chemical plants, it is common to see explosion-proof motors or vibrating level switches with nameplates marked with: Ex ia IIC T4 ~ T6 Ga While many engineers recognize this as the explosion-proof classification, the meaning of “T4 ~ T6” is often misunderstood. This marking refers to the
What Does the “T” on Explosion-Proof Nameplates Really Mean? Read More »
In industrial production, temperature transmitters act as the “eyes” that monitor temperature. Whether it’s measuring temperatures in food cold chains, high-temperature monitoring in chemical reactors, or precise temperature control in electronics workshops, they are indispensable. However, many engineers make mistakes when selecting these devices: either choosing a transmitter with too small a range, causing it
