行业组件数据 · 2026

视镜/液位计

A transparent window or gauge for visual monitoring of fluid levels in hydraulic reservoirs and tanks.

技术定义与适配语境
典型 视镜/液位计 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 sight glass or level gauge is a transparent component installed on hydraulic reservoirs and tanks to allow operators to visually inspect fluid levels, color, and contamination without opening the system. It typically consists of a glass or polycarbonate window mounted in a metal frame with sealing gaskets to maintain system integrity. These devices provide real-time monitoring of hydraulic oil levels, helping prevent overfilling, underfilling, and potential system damage.

组件规格

定义
A sight glass or level gauge is a transparent component installed on hydraulic reservoirs and tanks to allow operators to visually inspect fluid levels, color, and contamination without opening the system. It typically consists of a glass or polycarbonate window mounted in a metal frame with sealing gaskets to maintain system integrity. These devices provide real-time monitoring of hydraulic oil levels, helping prevent overfilling, underfilling, and potential system damage.
工作原理
Operates on the principle of hydrostatic pressure equilibrium, where the fluid level inside the reservoir matches the visible level in the transparent gauge due to atmospheric pressure and fluid density. The transparent material allows light transmission for visual inspection while maintaining a sealed environment.
材料
Window: Tempered borosilicate glass (for high temperature/pressure)polycarbonate (for impact resistance)or acrylic (for general use). Frame: Carbon steel (ASTM A36)stainless steel (304/316)or aluminum alloy. Seals: Nitrile rubber (NBR)fluorocarbon (FKM/Viton)or ethylene propylene diene monomer (EPDM) gaskets.
Scale Markings
Metric (liters) and imperial (gallons) units
Connection Type
Flanged, threaded (NPT, BSP), or welded
Pressure Rating
0-10 bar (standard), up to 25 bar (high-pressure)
Visibility Range
Full scale or partial scale markings
Window Thickness
6-12 mm
Temperature Range
-20°C to 120°C (standard), up to 200°C (high-temperature)
标准
ISO 4401DIN 3852SAE J518ANSI B16.5

行业分类与别名

视镜/液位计 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

Thermal shock from rapid temperature changes->Glass cracking or seal degradation->Use tempered borosilicate glass with proper thickness, install thermal shields, and implement gradual temperature changes
Abrasive particles in hydraulic fluid->Window scratching and reduced visibility->Install proper filtration systems (10 micron or finer), use polycarbonate windows in high-particulate environments
Improper installation torque->Seal compression failure and leaks->Follow manufacturer torque specifications, use calibrated torque wrenches, and implement installation training

工业生态与工程逻辑

0
Glass breakage under pressure
1
Seal failure leading to leaks
2
Inaccurate readings due to parallax error
3
Chemical incompatibility with fluids
4
Temperature-induced stress cracking

合规与检测

tolerance
±2% of full scale for level indication, ±0.5 mm for dimensional specifications
test method
Hydrostatic pressure testing per ISO 4401, visual inspection per ASTM F788, seal integrity testing with helium leak detection

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

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

How often should sight glasses be inspected?

Daily visual inspections are recommended for critical systems, with thorough cleaning and seal checks during routine maintenance (typically every 3-6 months).

Can sight glasses be replaced while the system is operational?

No, the system must be depressurized and drained before replacement to prevent fluid leakage and ensure safety.

What causes cloudiness in sight glass windows?

Cloudiness typically results from chemical degradation of the material, scratches from abrasive particles, or chemical incompatibility between the fluid and window material.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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URN:CNFX:ME:UNIT:SIGHT_GLASS_LEVEL_GAUGE