行业组件数据 · 2026

端子头

Termination head for connecting thermocouple wires to measurement instruments in precision temperature sensing systems.

技术定义与适配语境
典型 端子头 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 termination head is a critical component in precision thermocouple probe assemblies that provides a secure, insulated connection point between the thermocouple extension wires and the measurement instrument. It houses the cold junction compensation circuitry, protects the connection from environmental factors, and ensures signal integrity by maintaining proper electrical continuity and thermal isolation.

组件规格

定义
A termination head is a critical component in precision thermocouple probe assemblies that provides a secure, insulated connection point between the thermocouple extension wires and the measurement instrument. It houses the cold junction compensation circuitry, protects the connection from environmental factors, and ensures signal integrity by maintaining proper electrical continuity and thermal isolation.
工作原理
The termination head operates by providing a stable transition point where thermocouple wires connect to copper conductors leading to the measurement instrument. It maintains the Seebeck effect continuity while compensating for temperature variations at the connection point through integrated cold junction compensation. The housing provides mechanical protection, electrical insulation, and environmental sealing to prevent signal degradation.
材料
Housing: Stainless steel 316L or high-temperature engineering plastics (PEEKPTFE). Insulation: Ceramic or high-temperature fiberglass. Contacts: Nickel-plated copper or gold-plated beryllium copper. Seals: Silicone or fluorocarbon O-rings. Terminal blocks: High-temperature thermoset plastics.
Thread Size
M20x1.5 or NPT 1/2"
Mounting Type
Panel or conduit
Electrical Rating
600V AC/DC
Temperature Range
-200°C to +1200°C
Contact Resistance
< 5 mΩ
Ingress Protection
IP67 minimum
Dielectric Strength
2000V RMS
Housing Material Grade
316L Stainless Steel
Wire Gauge Compatibility
AWG 14-24
标准
ISO 9001IEC 60584ASTM E230DIN 43710

行业分类与别名

端子头 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

Loose wire connections->Intermittent or lost temperature signal->Use proper torque specifications for terminal screws and implement regular maintenance checks
Moisture ingress through damaged seals->Corrosion and signal degradation->Regular seal inspection and replacement, proper installation with correct torque on sealing components
Incorrect thermocouple type matching->Systematic measurement errors->Clear labeling, color coding, and verification procedures during installation

工业生态与工程逻辑

0
Electrical short circuits
1
Signal drift due to poor connections
2
Moisture ingress causing corrosion
3
Thermal shock damage
4
Incorrect cold junction compensation

合规与检测

tolerance
±0.1°C for cold junction compensation, ±0.5% for overall measurement accuracy
test method
ASTM E220/E230 for thermocouple calibration, IEC 60584 for type testing, IP testing per IEC 60529

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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 is the purpose of cold junction compensation in termination heads?

Cold junction compensation corrects for temperature variations at the connection point between thermocouple wires and copper conductors, ensuring accurate temperature readings by accounting for the Seebeck voltage generated at this junction.

Can termination heads be used with different thermocouple types?

Yes, but they must be specifically designed for the thermocouple type (J, K, T, E, N, R, S, B) as each has different electrical characteristics and compensation requirements.

How do I select the right termination head for harsh environments?

Choose termination heads with higher IP ratings (IP67 or IP69K), corrosion-resistant materials (316L stainless steel), and appropriate temperature ratings for your application environment.

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