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Pressure Testing of Industrial Equipment: What Does It Really Test?

Pressure /

In industries dealing with pressure vessels, process pipelines, heat exchangers, valves, and other equipment, pressure testing is an unavoidable part of equipment delivery, system commissioning, and project acceptance. However, behind this highly standardized process, the true engineering purpose, risk boundaries, and the relationship between pressure testing and design assumptions are often reduced to a routine […]

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Detailed Guide to Instrumentation Cable Types and Features

Instrumentation /

Instrumentation cables are specialized cables used for transmitting low-voltage, low-current signals in industrial control systems. These cables are vital for ensuring accurate communication and control between various devices in automation systems. Below is a detailed exploration of the common types of instrumentation cables, their characteristics, and suitable applications. 1. RVVP: Copper Conductor, PVC Insulated and

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How to Perform Accurate Resistance Measurement?

Instrumentation /

In the field of instrumentation, theoretical knowledge is like the wrench in your hand—it may seem unimportant, but when it’s needed, it plays a critical role. Whether you’re preparing for an entry-level certification or want to solidify your foundation in practical work, topics like circuit diagrams, sensor principles, and troubleshooting techniques are crucial. This series

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The Unstoppable Trend of Open Automation

PLC /

The Evolution of Open Automation The traditional industrial control sector has long faced several critical challenges: communication ecosystem barriers, tight hardware-software integration, complex industrial network configurations, and inflexible computational capabilities. According to industry statistics, there are over 30 international industrial communication protocol standards in existence today. This diversity, coupled with proprietary ecosystems created by major

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Magnetic Float Level Indicator Selection Guide: Key Pitfalls to Avoid! A Practical Guide Based on 3 Core Dimensions and 4 Industrial Scenarios

Level meter /

In industries such as petrochemicals, water treatment, energy, pharmaceuticals, and food processing, magnetic float level indicators have become the mainstream equipment for level measurement, owing to their stable performance based on magnetic coupling, convenient visual display, and simple structure with low maintenance costs. However, in practice, many procurement and operations personnel often fall into the

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Configuration and Usage of Dual Safety Valves in a Spherical Storage Tank

Tank /

Spherical storage tanks, commonly used for storing pressurized gases or liquids, are equipped with safety valves to ensure safe operation by preventing overpressure scenarios. Configuring and using two safety valves appropriately is critical to maintaining system integrity and avoiding potential hazards. This article provides a detailed explanation of how to configure and use dual safety

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Why Do Thermocouples Require Cold-Junction Compensation?

Thermocouples /

The functioning of a thermocouple relies on the thermoelectric potential, which depends not only on the temperature of the measurement junction but also on the temperature of the reference junction. In practical applications, the reference junction is commonly referred to as the “cold junction.” For a given thermocouple, when the reference junction temperature remains constant,

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How to Prevent Water Ingress in Explosion-Proof Electrical Equipment

Instrumentation /

Preventing water ingress in explosion-proof electrical equipment is essential to ensure safety and operational reliability. Below is a detailed guide to implementing effective measures for this purpose. 1. Choose the Right Protection Level IP Protection Rating: Select equipment with an Ingress Protection (IP) rating appropriate for the environment. For wet or damp locations, devices with

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Troubleshooting Faults in Temperature, Pressure, Flow, and Level Control Systems

Instrumentation /

Overview This guide outlines the fault analysis steps for four key measurement control systems: temperature, pressure, flow, and level control systems. Each system is analyzed based on specific fault scenarios, providing clear steps to diagnose and address common issues. 1. Fault Analysis of the Temperature Control System When analyzing faults in the temperature control system,

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