PLC Archives - Just Measure it

PLC

Understanding the Differences Between ⅡC and ⅡB+H2 Explosion-Proof Equipment

Explosion-proof equipment is essential in industries dealing with hazardous atmospheres to prevent accidents caused by explosive gases. Among the classifications for such equipment, ⅡC and ⅡB+H2 are two critical categories. Understanding their differences is vital to ensure safety and compliance with industry standards. Background on Explosion-Proof Classifications The classification of explosion-proof equipment is governed by […]

Understanding the Differences Between ⅡC and ⅡB+H2 Explosion-Proof Equipment Read More »

Causes and Solutions for Overloading in Batch Material Dispensing Control

Overloading phenomenon is a common issue in the batch material dispensing control process. Specifically, when the total dispensing amount reaches the preset value, the controller immediately sends a signal to close the valve. However, due to system lag and inertia, some fluid continues to flow towards the receiving end, causing the final dispensing amount to

Causes and Solutions for Overloading in Batch Material Dispensing Control Read More »

Applications of Pulse Signals in Thermal Control Systems

Pulse signals play a crucial role in thermal control systems, particularly in ensuring precise control, monitoring, and optimization of temperature and heat transfer processes. Their versatility and efficiency make them indispensable across a range of industries, including aerospace, electronics, and manufacturing. Below is a detailed exploration of how pulse signals are utilized in thermal control

Applications of Pulse Signals in Thermal Control Systems Read More »

Understanding DCS Redundancy Technology: A Comprehensive Guide

In industrial automation, ensuring continuous and reliable operation is crucial. Distributed Control Systems (DCS) play a vital role in process industries like oil and gas, power generation, and chemical production, where maintaining control stability is essential. DCS redundancy technology is a key factor in enhancing system reliability and mitigating the risk of operational interruptions caused

Understanding DCS Redundancy Technology: A Comprehensive Guide Read More »

Three main operating states of a transistor

1. Cutoff State Definition: In the cutoff state, the transistor is essentially “off,” meaning it does not conduct current from the collector to the emitter. This state occurs when there is insufficient base current, IBI_BIB​, to activate the transistor, preventing it from allowing current flow between the collector and emitter terminals. Conditions: **Base-Emitter Voltage V_{BE}

Three main operating states of a transistor Read More »

Causes and Solutions for High Moisture Content in Compressed Air

Introduction Compressed air is a crucial energy source and control medium widely used in industrial, transportation, construction, medical, and other sectors. One key factor that impacts the quality and stability of compressed air is its moisture content. Excessive moisture can lead to equipment malfunctions, compromised product quality, increased energy consumption, and higher production costs. This

Causes and Solutions for High Moisture Content in Compressed Air Read More »

Common Failures in Terminal Blocks and How to Address Them

Terminal blocks are critical components in electrical and electronic systems, providing secure connections for transmitting voltage, current, or signals. However, various issues can arise during their use, impacting performance and reliability. This article discusses common terminal block failures, their causes, and preventive measures. 1. Contact Failure The metallic conductor within a terminal block is the

Common Failures in Terminal Blocks and How to Address Them Read More »

Should a DCS System Include an Emergency Shutdown Button?

1. Background During a recent safety inspection organized by the Municipal Emergency Management Bureau, one of the reviewing experts insisted that enterprises should add an automatic (emergency) shutdown function in the Distributed Control System (DCS) and configure a corresponding software button on the operator interface. As a participant in this inspection, I raised an objection.

Should a DCS System Include an Emergency Shutdown Button? Read More »

Understanding the Differences Between Modbus TCP/IP and Profinet

Industrial automation relies heavily on robust communication protocols to ensure that devices and control systems work seamlessly together. Among the most widely adopted are Modbus TCP/IP and Profinet. While both leverage Ethernet as their physical layer, their design philosophies, performance characteristics, and application scenarios differ significantly. 1. Origins and Basic Concepts Modbus TCP/IP Originally developed

Understanding the Differences Between Modbus TCP/IP and Profinet Read More »

Translate »