行业组件数据 · 2026

波登管/传感元件

Bourdon tube sensing element converts fluid pressure into mechanical displacement for pressure gauges.

技术定义与适配语境
典型 波登管/传感元件 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

A Bourdon tube is a curved, hollow metal tube with an elliptical cross-section that serves as the primary sensing element in mechanical pressure gauges. When internal pressure increases, the tube tends to straighten due to its elastic deformation, creating proportional mechanical displacement at the sealed tip. This displacement is mechanically amplified through linkages to drive the gauge pointer, providing visual pressure readings. The tube's geometry, material properties, and manufacturing precision determine its pressure range, accuracy, and hysteresis characteristics.

组件规格

定义
A Bourdon tube is a curved, hollow metal tube with an elliptical cross-section that serves as the primary sensing element in mechanical pressure gauges. When internal pressure increases, the tube tends to straighten due to its elastic deformation, creating proportional mechanical displacement at the sealed tip. This displacement is mechanically amplified through linkages to drive the gauge pointer, providing visual pressure readings. The tube's geometry, material properties, and manufacturing precision determine its pressure range, accuracy, and hysteresis characteristics.
工作原理
Operates on the elastic deformation principle: internal pressure applied to the sealed tube causes it to uncoil or straighten proportionally. The resulting tip displacement is mechanically transmitted to rotate the pointer via a sector-pinion or lever mechanism, converting pressure into angular movement.
材料
Typically phosphor bronzeberyllium copperstainless steel (304/316)or Monel for corrosive environments. Material selection depends on pressure rangemedia compatibilityand temperature conditions.
Hysteresis
<0.5% of span
Repeatability
±0.1% of span
Accuracy Class
±0.1% to ±2.5% of full scale
Pressure Range
0-0.6 bar to 0-700 bar
Temperature Range
-40°C to +120°C
Overpressure Safety
130% of full scale
标准
ISO 5171DIN 16085ASME B40.100

行业分类与别名

波登管/传感元件 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Material fatigue from continuous pressure cycling->Crack formation leading to leakage or rupture->Regular calibration, pressure limiters, material selection based on cycle life
Corrosive media attack->Wall thinning and eventual rupture->Compatible material selection, protective coatings, diaphragm seals
Mechanical linkage wear->Increased hysteresis and reduced accuracy->Regular maintenance, lubrication, replacement of worn components

工业生态与工程逻辑

0
Fatigue failure from pressure cycling
1
Corrosion from incompatible media
2
Overpressure damage exceeding design limits
3
Mechanical linkage wear affecting accuracy

合规与检测

tolerance
±0.5% to ±2.5% of full scale depending on accuracy class
test method
Deadweight tester calibration, comparison against reference standard, hysteresis and repeatability testing per ISO 5171

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What are the main types of Bourdon tube configurations?

C-shaped (most common), helical (for higher sensitivity), and spiral (for very low pressures) configurations, each offering different displacement characteristics for specific pressure ranges.

How does temperature affect Bourdon tube accuracy?

Temperature changes cause thermal expansion/contraction of tube material, affecting elasticity and zero point. Compensation methods include bi-metal strips, liquid-filled cases, or temperature-corrected materials.

What media are incompatible with standard Bourdon tubes?

Oxygen (requires degreased components), chlorine, ammonia, and other reactive chemicals may require special materials like Monel or stainless steel with appropriate passivation.

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URN:CNFX:ME:UNIT:BOURDON_TUBE_SENSING_ELEMENT