Скачать или смотреть Bourdon Tube Pressure Gauges | Types of Pressure Gauges

Bourdon tube pressure gauges are widely used instruments for measuring pressure in various industrial applications. The Bourdon tube, a key component of these gauges, operates on the principle that a flattened, curved tube tends to straighten or curve when subjected to pressure changes. Here are some key points about Bourdon tube pressure gauges:

Components:

1. *Bourdon Tube:*
Material: Typically made of materials like phosphor bronze or stainless steel.
Shape: Can be C-shaped, helical, spiral, or coiled.
Cross-Section: Oval or circular cross-section.
Closed End: One end is sealed, and the other is connected to the pressure source.

2. *Linkage Mechanism:*
Linkage: Connects the free end of the Bourdon tube to the pointer.
Amplification: Converts the linear motion of the tube into rotational motion.

3. *Pointer and Dial:*
Dial: Marked with a scale indicating pressure units (psi, kPa, bar, etc.).
Pointer: Moves along the dial, indicating the pressure value.

4. *Zero Adjustment:*
Purpose: Compensates for offsets or variations, ensuring accurate readings.

5. *Casing:*
Material: Usually made of metal to protect the internal components.
Window: Often includes a transparent window to view the dial.

6. *Socket or Connection:*
Type: The connection point for attaching the gauge to the pressure system (threaded, flanged, etc.).

Working Principle:

1. *Pressure Application:*
When pressure is applied to the Bourdon tube, it tends to straighten or unwind.
This deformation is proportional to the pressure applied to the tube.

2. *Linkage and Dial Movement:*
The free end of the Bourdon tube is linked to a mechanical linkage system.
The linkage translates the linear motion of the tube into rotational motion.
The rotational motion is then transferred to the pointer, causing it to move along the dial.

3. *Pressure Reading:*
The position of the pointer on the dial indicates the pressure value.
The scale on the dial is calibrated to provide accurate pressure readings.

Applications:

Bourdon tube pressure gauges find applications in various industries, including manufacturing, oil and gas, chemical, pharmaceutical, and more.
They are suitable for measuring both liquid and gas pressures within a specific range.

Advantages:

Simplicity: Bourdon tube pressure gauges are simple in design.
Durability: They are known for their robust construction and durability.
Versatility: Available in various designs to suit different pressure ranges and media.

Considerations:

Correct Selection: Choosing the right Bourdon tube type and material for the specific application is crucial.
Regular Calibration: Periodic calibration is necessary to ensure accuracy.

Bourdon tube pressure gauges are reliable, cost-effective, and widely used for monitoring and controlling pressure in industrial processes.

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