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In industrial automation systems, 4-20mA current loops are one of the most widely used signal transmission methods. Pressure transmitters, flow meters, level transmitters, temperature transmitters, and other field instruments commonly use 4-20mA signals to transmit measurement values to PLCs or DCS systems. However, during field troubleshooting, a common question often confuses new technicians: When measuring […]

Does a Calibration Certificate Mean the Instrument Is Ready for Use? Many people would answer: Yes, of course. However, in real engineering projects, manufacturing processes, and quality management systems, the answer is not always that simple. A calibration certificate and a test report are two common technical documents. Both may contain test data, standards, signatures,

Many people in industrial automation have a common assumption: “If a pneumatic cylinder has a larger bore size, it will always generate more force and operate more stably.” However, this is not always true. A larger cylinder can provide higher theoretical force, but it does not automatically mean better performance. In real industrial applications, cylinder

In industrial automation systems, sensors and instruments need to communicate measurement information to PLCs, DCS systems, and control equipment. Among all industrial signals, analog signals and digital signals are the two most commonly used signal types. For beginners in automation and instrumentation, it is sometimes confusing: What is the difference between analog and digital signals?

Why Regular Calibration Is Not Enough Gas detection systems are critical safety devices used in chemical plants, oil & gas facilities, wastewater treatment plants, metallurgy industries, and other hazardous environments. The gas sensor is the core component of any gas detector. Its performance directly determines whether the instrument can provide reliable early warning during a