---
title: "Thermocouple / Temperature Sensor"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:THERMOCOUPLE_TEMPERATURE_SENSOR"
  data_integrity_hash: "387163c7450aeb778032559f572595e6"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:THERMOCOUPLE_TEMPERATURE_SENSOR"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/thermocouple-temperature-sensor.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/thermocouple-temperature-sensor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "-200°C to 1250°C"
    unit: "°C"
engineering_limits:
  max_safe_operating_point:
    value: 1380
    unit: "°C"
    consequence: "Thermoelectric voltage degradation due to oxidation at &gt;870°C, and eventual wire melting at 1380°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Galvanic corrosion at dissimilar metal junctions in humid environments"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic sealing with argon gas backfilling at 1.2 bar positive pressure"
  - node_2:
      trigger: "Thermal cycling fatigue at 1000+ cycles between -200°C and 800°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Annealed Inconel 600 sheath with 0.5mm wall thickness"
bom_nodes:
  thermocouple-junction:
    type: "component"
    urn: "URN:CNFX:ME:THERMOCOUPLE_JUNCTION"
    interface_type: "physical-logic-coupled"
  protective-sheath:
    type: "component"
    urn: "URN:CNFX:ME:PROTECTIVE_SHEATH"
    interface_type: "physical-logic-coupled"
  insulation:
    type: "component"
    urn: "URN:CNFX:ME:INSULATION"
    interface_type: "physical-logic-coupled"
  connection-head:
    type: "part"
    urn: "URN:CNFX:ME:CONNECTION_HEAD"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/thermocouple-temperature-sensor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "b79436a21d36a08b63d58a2c9d30addb94e493a589e5a08abea1c0041081051c"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Thermocouple / Temperature Sensor

## 1. Technical Definition
A temperature measurement device integrated into hermetic sealing heads to monitor and control sealing temperature.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **-200°C to 1250°C**. Failure boundary: **1380°C (melting point of Type K thermocouple chromel wire)**, Mechanism: **Thermoelectric voltage degradation due to oxidation at &gt;870°C, and eventual wire melting at 1380°C**.

### 2.1 Analytical Physics Model
Governed by the **Combined Measurement Uncertainty**:

> **Primary Equation**: $u_c = \sqrt{\sum u_i^2}$  
> **Engineering Impact**: Defines the precision confidence interval for inspection.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| u_i | Standard Uncertainty components | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Galvanic corrosion at dissimilar metal junctions in humid environments | 8 | Open circuit failure with &gt;10Ω resistance increase | Hermetic sealing with argon gas backfilling at 1.2 bar positive pressure |
| Thermal cycling fatigue at 1000+ cycles between -200°C and 800°C | 8 | Seebeck coefficient drift exceeding ±2.5% calibration tolerance | Annealed Inconel 600 sheath with 0.5mm wall thickness |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | °C | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Connection Head](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/connection-head.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Temperature Calibration System**, **Signal Conditioner/Transmitter**, **Hermetic Sealing Machine**  
**Downstream Applications**: Hermetically Sealed Electronic Enclosures, Medical Device Packaging, Food Preservation Containers  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What thermocouple types are best for hermetic sealing applications?
**A**: Type K (Nickel-Chromium/Nickel-Aluminum) offers excellent general-purpose performance, while Type S/R (Platinum-Rhodium) provides superior accuracy for high-temperature sealing processes in machinery manufacturing.

### Q: How does the stainless steel sheath protect the temperature sensor?
**A**: The stainless steel sheath provides corrosion resistance and mechanical protection in harsh industrial environments, ensuring reliable temperature measurement in hermetic sealing heads during continuous operation.

### Q: What maintenance is required for integrated temperature sensors in sealing equipment?
**A**: Regular calibration checks and inspection of the ceramic insulation and protective sheath are recommended to maintain measurement accuracy and prevent contamination in hermetic sealing applications.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Thermocouple / Temperature Sensor](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/thermocouple-temperature-sensor)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: THERMOCOUPLE_TEMPERATURE_SENSOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8c31173b
