Definition and Basic Structure
A general pressure gauge with a flange is an instrument used to measure pressure. It mainly consists of pressure sensing elements, display components, and flanges. Pressure sensing components are usually Bourdon tubes, diaphragms, or corrugated tubes, which can produce corresponding deformations according to changes in pressure. The display component is usually a dial or digital display screen, used to visually display pressure values. A flange is an important structural component, which is a disc-shaped part typically with bolt holes used to connect pressure gauges to piping systems or other equipment.
The role of flanges
Easy installation and connection: The flange enables the pressure gauge to be securely installed at the interface of pipelines, containers, and other equipment. By using bolts and washers, a tight connection can be achieved to ensure the accuracy of pressure measurement. For example, in industrial pipelines, flange connections allow pressure gauges to be accurately installed at the location where pressure needs to be measured in complex pipeline layouts, and are easy to disassemble and maintain.
Adapt to different pipeline systems: Different industrial fields may use pipelines of different specifications. Pressure gauges with flanges can be equipped with flanges of different sizes and standards as needed, such as ANSI (American National Standards Institute) flanges and DIN (German Industrial Standards) flanges commonly used in the chemical industry, which can be well compatible with various pipeline systems.
application area
Industrial production: widely used in industries such as chemical, petroleum, and natural gas. For example, in the chemical production process, it is used to monitor the pressure inside the reaction kettle, the pressure of the fluid transported in the pipeline, etc. In refineries, it is used to measure the pressure of each layer in the crude oil fractionation tower to ensure the safety and stability of the production process.
Energy industry: used in thermal power plants, hydropower stations and other places to measure the pressure at the inlet and outlet of steam pipelines, water turbines and other locations, and to assist in the control of energy production and transmission processes.
Heating, Ventilation, and Air Conditioning (HVAC) System: Used in the air conditioning and ventilation systems of large buildings to measure the pressure of refrigerant ducts, air supply ducts, etc., and help regulate the comfort of indoor environments.
Accuracy and performance characteristics
Accuracy range: The accuracy of a universal pressure gauge varies depending on the model and application. Generally, its accuracy can reach around ± 0.5% - ± 2.5% of the full range. For example, a pressure gauge with a full range of 1000 psi may have a measurement error between ± 5 psi and ± 25 psi.
Pressure range: It can measure a wide range of pressures, from low pressures of a few inches of water column (inWC), such as measuring air pressure in ventilation systems, to high pressures of thousands of pounds per square inch (psi), such as pressure measurements in high-pressure oil wells or chemical high-pressure reactors.
Durability: Due to its typical application in complex industrial environments, universal pressure gauges with flanges have good durability. The shell is generally made of metal materials, such as stainless steel, which can resist corrosion, wear, and a certain degree of impact, ensuring long-term stable operation in harsh environments.
