hydraulic pressure gauge

6 day ago

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3 year

Product details

• Definition: A specialized instrument for measuring the pressure of hydraulic systems, fluids, or water. It ensures the safe and efficient operation of systems by monitoring pressure values and is widely used in industries, automotive, aerospace, and other fields.

Working Principle

The core principle of a hydraulic pressure gauge is based on thedeformation of elastic sensitive elements:

1. Elastic Element: Typically equipped with a spring tube, diaphragm, or bellows inside the gauge.

2. Pressure Action: When the pressure of the measured medium (such as hydraulic oil, water) acts on the elastic element, it causes elastic deformation.

3. Deformation Transmission: The deformation is proportional to the pressure and is amplified through a transmission mechanism (such as gears, levers).

4. Pointer Indication: The amplified deformation drives the pointer to move on the dial, directly displaying the pressure value.

Structure and Components

A typical hydraulic pressure gauge consists of the following parts:

• Case: Protects internal components, usually made of metal or plastic.

• Pointer and Dial: The pointer indicates the pressure value, and the dial is marked with pressure units (such as MPa, bar, psi).

• Elastic Element: Such as a spring tube, which is the core component for sensing pressure.

• Transmission Mechanism: Converts the minute deformation of the elastic element into a significant movement of the pointer.

• Connection Interface: Such as a threaded joint, used to connect to the measured system.

Installation and Usage Precautions

1. Installation Position:

• Should be easy to observe and maintain, avoiding interference from radiant heat, freezing, or vibration.

• Usually installed vertically or slightly inclined forward (no more than 30 degrees).

2. Buffer Device:

• A buffer loop is often installed before the pressure gauge to mitigate direct medium impact and protect the instrument.

• It may be equipped with a three-way cock or needle valve for easy replacement and calibration of the pressure gauge.

3. Environmental Requirements:

• Avoid contact with high temperatures, corrosive gases, or liquids to prevent damage to the instrument.

Applications

Hydraulic pressure gauges play a crucial role in the following scenarios:

• Industrial Field: Thermal networks, oil and gas transmission, water and gas supply systems.

• Automotive and Machinery: Engine oil pressure monitoring, hydraulic brake systems.

• Aerospace: Pressure testing of aircraft hydraulic systems.

• Scientific Research: Fluid dynamics research, material pressure testing.

Maintenance and Calibration

• Regular Maintenance: Clean the dial, check the sealing of connections to prevent leaks.

• Calibration Cycle: Develop a verification plan based on accuracy requirements and operating environment (e.g., every six months or annually).

• Safety Protection: Pressure gauges used for safety monitoring must be strictly calibrated to ensure data accuracy.

Related Terms

• Gauge Pressure: Pressure value based on atmospheric pressure (positive or negative pressure).

• Hydraulic Gauge: Another term for a hydraulic pressure gauge.

• Absolute Pressure: Pressure value based on absolute vacuum.

Through the above content, you can gain a comprehensive understanding of the definition, principle, structure, application, and maintenance points of "hydraulic pressure gauge."

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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