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RS485 is often mistaken for a communication protocol, but in reality, it’s a physical layer standard. This article aims to clarify common misunderstandings, explain the basics of RS485, and highlight its differences from protocols like Modbus RTU. Practical tips on wiring, installation, and troubleshooting will also be provided. What is RS485? RS485 is not a […]

Sulfuric acid (H₂SO₄) is one of the most widely used chemicals in industries such as fertilizer production, petroleum refining, chemical processing, metal treatment, and wastewater systems. A common question from engineers and buyers is: Can stainless steel be used for sulfuric acid service? The answer is: It depends on acid concentration and temperature. Many people

In industrial automation and electrical control systems, the emergency stop button (E-stop) is one of the most critical safety components. Its main purpose is to immediately stop machinery or disconnect power during dangerous situations. A common question from engineers and maintenance personnel is: Why are emergency stop buttons always designed with normally closed (NC) contacts

In industrial instrumentation, engineers and suppliers often request far more application details when selecting flow meters and level transmitters, while the selection process for pressure and temperature instruments is usually much simpler. At first glance, this may seem inconsistent. However, there are solid technical reasons behind this difference. This article explains why flow and level

In industrial environments, the accuracy of instruments and measuring devices directly affects process stability, product quality, equipment safety, and operational efficiency. A small measurement deviation may lead to: process parameter deviation reduced production efficiency product inconsistency equipment malfunction serious safety incidents This is why instrument calibration is not optional—it is essential. Calibration is the process

 1. Grounding Devices in DCS Systems Operator consoles, printers, and server cabinets: Equipped with protective ground screws. Relay cabinets, U cabinets, and distribution cabinets: Equipped with protective ground screws. DCS I/O cabinets: Equipped with shielded grounding busbars and protective ground screws. The system ground (+24V ground) is floating. Instrument cabinets and operator panels: Equipped with

Pneumatic conveying is a widely used method for transporting powders and granular materials in modern industries. Utilizing compressed air as the driving force, it offers an efficient, dust-free, and flexible solution for long-distance material transport. This article covers the basic principles of pneumatic conveying, pressure requirements, mechanisms of pressure loss, causes of pressure fluctuations, characteristics

In modern industrial automation, sensors are the critical link between the physical process and the digital control system. Whether in flow measurement, pressure monitoring, temperature control, or level detection, sensors serve as the “eyes and ears” of the entire system. They detect physical changes in real time and convert them into usable signals for PLC,

In industrial instrumentation, especially during product selection and calibration, we often hear statements like: “This pressure transmitter is Class 0.5, so the accuracy should be fine.” or “The measured value deviates by 0.2 kPa, so the instrument accuracy is poor.” In fact, these statements often confuse accuracy and accuracy class, two closely related but fundamentally

Steam is one of the most widely used energy carriers in industrial processes.From food processing and pharmaceuticals to chemical plants, paper mills, and power generation, steam plays a critical role in both heat transfer and mechanical energy supply. However, many industrial facilities still suffer from: inaccurate steam flow measurement excessive heat loss poor condensate recovery