Instrumentation

Hydrogen chloride (HCl) gas is classified under “acute toxicity – inhalation, category 3*” according to national standards. However, in practical terms, it is “not recommended” to set it up as a toxic gas for monitoring. Why is it that hydrogen chloride in its gas form is treated differently from its liquid form, like hydrochloric acid […]

In the world of instrumentation, theoretical knowledge is like the wrench in your toolkit — it may seem insignificant, but when it fails, it can bring everything to a halt! Whether you’re preparing for an entry-level certification or simply aiming to strengthen your foundational knowledge for daily operations, the concepts of circuit diagrams, sensor principles,

In the field, many operators have experienced this moment: despite following procedures, the moment the steam valve is opened, a dull “bang” is heard from the pipeline, the steel pipes shake, and white steam rises from the flanges… This is a classic case of steam pipeline water hammer. If not addressed immediately, it can cause

1. Basic Concept Comparison Item Spray-Coated PTFE Sintered PTFE Principle PTFE dispersion liquid or powder is sprayed onto the metal surface to form a coating. PTFE powder is fused and sintered at high temperatures to form a solid (either whole or as a coating). Base Material Metal substrates (steel, aluminum, stainless steel, etc.) Can be

Have you ever noticed that when installing a new steam pipeline, we specifically request that the flow orifice plate not be installed? You might wonder, why is this necessary? Let’s dive into the reasons behind this requirement. 1. The Small Diameter of the Flow Orifice Plate Can Hinder Purging Effectiveness The internal diameter of a

Ensuring that instruments operate properly in high-temperature environments requires a comprehensive approach involving selection, installation, protection, and maintenance. Different types of instruments, such as sensors, transmitters, and displays, require tailored solutions. The following strategies outline how to address these needs: 1. Selection: Choose High-Temperature Models 1.1. Core Component Temperature Compatibility Sensors: Choose sensors made from

In modern industrial automation, level detection is a critical aspect to ensure continuous production and safety. Whether it’s chemical storage tanks, powder silos, or ash systems in power plants, accurately monitoring the material’s position is essential for stable operations. Among various measurement technologies, radio frequency capacitance (RFC) level switches are gradually becoming a mainstream solution

In the era of industrial automation, efficient communication between devices is crucial. Modbus, as a widely used communication standard, allows different devices to exchange data. However, with the advancement of internet technologies, converting Modbus data into HTTP protocol provides an easier way to achieve remote control and monitoring. This article discusses why it’s essential to

In the field of instrumentation and process control, theory is like a wrench—it may seem insignificant, but when it matters, it’s essential. Whether for obtaining basic certification or for daily tasks, concepts such as circuit diagrams, sensor principles, and troubleshooting are crucial. This series will continue to update, helping you master theoretical knowledge while providing

In industrial maintenance, instrument technicians often face the dilemma of using a high-precision multimeter but struggling to accurately determine the temperature or check the health of resistance thermometers (RTDs) and thermocouples. Why can’t we get the correct temperature even after measuring the resistance? Why does the millivolt reading from the thermocouple never match the actual