行业验证制造数据 · 2026

精密称重传感器

基于 CNFX 目录中多个工厂资料的聚合洞察,精密称重传感器 在 机械和设备制造 行业中通常会围绕 标准工业配置 到 重载生产要求 进行能力评估。

技术定义与核心装配

一个典型的 精密称重传感器 通常集成 Elastic Element 与 Strain Gauges。CNFX 上列出的制造商通常强调 Stainless Steel (17-4PH or 316L) 结构,以支持稳定的生产应用。

A high-accuracy sensor that converts mechanical force or weight into an electrical signal for precise measurement.

技术定义

Within the 'Special Properties' context, the Precision Load Cell serves as the core measurement component that enables accurate force, weight, or torque quantification in industrial systems. It provides the critical data input for process control, quality assurance, and automation by translating physical loads into reliable, high-resolution electrical signals.

工作原理

Operates based on strain gauge technology where applied force causes deformation in a sensing element (typically a metal beam or diaphragm). This deformation changes the electrical resistance of bonded strain gauges arranged in a Wheatstone bridge circuit, producing a proportional millivolt output signal that is amplified and calibrated to represent the precise load value.

主要材料

Stainless Steel (17-4PH or 316L) Aluminum Alloy (for lower capacity cells) Nickel-plated Steel

组件 / BOM

Elastic Element
Deforms under applied load to create measurable strain
材料: Stainless Steel or Aluminum Alloy
Strain Gauges
Convert mechanical strain into electrical resistance changes
材料: Constantan or Karma foil with polyimide backing
Sealing
Protects internal components from moisture, dust, and environmental factors
材料: EPDM or Viton rubber, sometimes with welded stainless steel
Cable/Connector
Transmits electrical signals to measurement instrumentation
材料: Shielded cable with PVC or PUR jacket, metal connector

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Moisture ingress exceeding 85% relative humidity Wheatstone bridge circuit corrosion causing signal drift >0.1% per hour Hermetic sealing with IP68 rating and desiccant-filled cavity
Thermal cycling between -40°C and +85°C at 10°C/minute Differential thermal expansion of strain gauge (17 ppm/°C) vs substrate (23 ppm/°C) causing bond failure Matched coefficient of thermal expansion materials and epoxy with 25 MPa shear strength at 150°C

工程推理

运行范围
范围
0-1000 N with ±0.03% full-scale accuracy
失效边界
1500 N compressive load or 200 N tensile load
Strain gauge deformation beyond elastic limit (Hooke's Law violation) at 0.2% strain, causing permanent Wheatstone bridge imbalance
制造语境
精密称重传感器 在 机械和设备制造 中会按材料、工艺窗口和检验要求共同评估。

别名与俗称

Strain Gauge Load Cell Force Sensor Weighing Sensor

行业别名与关键词

该产品在 CNFX 数据库中的搜索词、别名和技术称呼。

应用产品 / 所属系统

该产品或部件会出现在以下工业系统、设备或上级产品中。

应用匹配与尺寸矩阵

运行限制
pressure:Up to 150% of rated capacity (overload protection)
other spec:Accuracy: ±0.05% of full scale, Excitation voltage: 5-15 VDC, Output: 2 mV/V typical
temperature:-40°C to +85°C
兼容性
Stainless steel (316L) for corrosive environmentsAluminum alloy for general industrial useNickel-plated steel for washdown applications
不适用:High-vibration environments without proper mounting/isolation
选型所需数据
  • Maximum expected load (force/weight)
  • Required accuracy and resolution
  • Physical mounting constraints and dimensions

可靠性与工程风险分析

失效模式与根因
Zero drift or calibration shift
原因:Thermal expansion/contraction from temperature fluctuations, moisture ingress affecting strain gauge bonding, or mechanical stress relaxation in mounting components
Signal noise or intermittent readings
原因:Damaged cable shielding from abrasion or pinch points, poor electrical connections due to corrosion or vibration loosening, or electromagnetic interference from nearby equipment
维护信号
  • Erratic or unstable weight readings during normal operation
  • Visible physical damage to cables, connectors, or load cell body (dents, cracks, corrosion)
工程建议
  • Implement regular calibration checks with certified weights, especially after temperature changes or mechanical shocks, and maintain detailed calibration records
  • Ensure proper installation with aligned mounting surfaces, use torque-limiting tools for bolt tightening to specified values, and install protective cable conduits in high-traffic areas

合规与制造标准

参考标准
ISO 376:2011 - Calibration of force-proving instruments used for the verification of uniaxial testing machinesASTM E74-18 - Standard Practice of Calibration of Force-Measuring Instruments for Verifying the Force Indication of Testing MachinesOIML R60:2000 - Metrological regulation for load cells
制造精度
  • Non-linearity: ≤±0.05% of rated output
  • Creep (30 min): ≤±0.03% of rated output
质量检验
  • Shunt Calibration Test - Verifies electrical output consistency under simulated load
  • Temperature Compensation Test - Ensures output stability across operating temperature range

生产该产品的制造商

具备该产品生产能力的中国制造商与相关工厂资料。

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。

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常见问题

What is the typical accuracy range for precision load cells in machinery applications?

Precision load cells typically offer accuracy from ±0.03% to ±0.25% of full scale, with high-end models achieving ±0.03% for critical machinery measurement applications where exact force or weight data is essential.

How does the choice between 17-4PH and 316L stainless steel affect load cell performance?

17-4PH stainless steel offers higher strength and better fatigue resistance for demanding applications, while 316L provides superior corrosion resistance in harsh environments. The choice depends on whether mechanical durability or chemical resistance is the priority for your equipment.

What maintenance is required for precision load cells in industrial machinery?

Regular calibration checks (typically every 6-12 months), visual inspection for physical damage, cleaning to prevent debris accumulation, and verification of cable/connector integrity. Proper mounting and avoiding overload beyond rated capacity are crucial for maintaining accuracy.

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CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Index v2.6.05 · 机械和设备制造

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