Pressure

A Common Field Troubleshooting Guide “The liquid level is dropping, but the pressure transmitter is showing an increase in pressure!” This seemingly paradoxical situation is a common issue encountered by process engineers and instrumentation maintenance personnel. It not only affects the accuracy of production data but can also mislead operational decisions and pose safety risks. […]

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

In engineering, scientific research, and industrial production, “pressure” is a fundamental concept found everywhere—from pressure drops in fluid pipelines, to material compressive strength, and the rated working pressure of gas storage vessels. Accurate understanding and use of pressure units are essential for ensuring reliable calculations and safe designs. However, due to historical developments and industry

In the fields of pressure vessels, heat exchangers, pipelines, and boilers, three pressure-related terms appear frequently: Operating Pressure Design Pressure MAWP (Maximum Allowable Working Pressure) Although these terms often appear together in drawings, datasheets, and inspection documents, they cannot be used interchangeably. They represent different pressure control levels that determine mechanical safety margins, operating boundaries,

Pressure gauges are essential instruments widely used in various industries to measure and monitor pressure. To ensure their reliability and accuracy, pressure gauges are classified based on their precision and application, and they require periodic calibration. This article delves into the classification of pressure gauges and provides a comprehensive explanation of their calibration cycles. Classification

1. Pressure Sensor (Transducer) Working Principle: Detects a pressure signal and converts it into a usable electrical signal (analog or digital). Applications: Widely used in industrial automation systems such as water resources, electric power, petrochemicals, aerospace, railways, and smart buildings. Features: Provides continuous output (e.g., 4–20 mA, 0–10 V, RS485). Interfaces with PLC, DCS, or

Pressure loss—also known as pressure drop or head loss—is a critical concept in fluid engineering. It refers to the reduction in pressure as a fluid flows through a pipe, valve, fitting, or any other component in a system. Understanding and managing pressure loss is essential for the efficient and safe operation of pipelines, pumps, and

Back pressure, as the name implies, refers to the static pressure that exists on the downstream side of a flow system. It represents a form of resistance against the direction of fluid flow and plays a crucial role in various industrial processes involving liquids or gases. This article explains what back pressure is, its key

In physics and engineering, the terms “pressure” and “pressure intensity” (or “stress”) are often confused or used interchangeably. While they are related, they represent different concepts. Understanding their distinction is crucial, especially in technical applications. 1️⃣ What Is Pressure Intensity? Pressure intensity (often simply called pressure) refers to the force applied per unit area. It

1. Introduction In industrial pressure measurement, you often encounter terms like absolute pressure, gauge pressure, and vacuum pressure. Understanding their differences and relationships is essential for accurate pressure monitoring and selection of pressure instruments. This article explains the definitions, formulas, and practical implications of these three types of pressure. 2. Absolute Pressure (P_abs) Absolute pressure