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I. Definition and Basic Principles
Pressure Measuring refers to the process of quantitatively recording the pressure in a gas or liquid through a specific instrument or device. These measurements are usually based on physical principles, such as elastic deformation, pressure difference, etc., to convert pressure into an observable or recorded signal.
II. Common types of pressure measurement
Gage pressure measurement: Gauge pressure is the pressure measurement relative to atmospheric pressure. It is often used in daily applications, such as monitoring of tire pressure, hydraulic systems, and gas delivery systems. Gauge pressure measurements are affected by changes in atmospheric pressure.
Absolute pressure measurement: Absolute pressure is the pressure measurement relative to absolute vacuum. It is not affected by changes in atmospheric pressure, so it is often used in situations where accurate calculations are required, such as vacuum systems, atmospheric monitoring, and altimeters.
Differential pressure measurement: Differential pressure refers to the pressure difference between two points. It is often used to monitor the pressure difference between two different locations in a system, such as the flow rate of liquid flow in a pipeline, filter performance evaluation, etc.
Pressure gauge: Pressure gauge is one of the most common Pressure Measuring instruments. It uses the deformation of elastic elements (such as spring tubes, diaphragm boxes, etc.) to indicate the pressure value.
III. Application fields
Industrial automation: In the field of industrial automation, pressure measurement is widely used in process control, fluid transmission, equipment protection, etc.
Aerospace: In the field of aerospace, pressure measurement is crucial for the design, testing and maintenance of aircraft. It involves aircraft tire pressure, fuel system pressure, cockpit pressure and many other aspects.
Medical field: In the medical field, pressure measurement is used for blood pressure monitoring, ventilator control and other aspects. These measurements are of great significance for the diagnosis and treatment of patients.
