---
title: "Precision Thermocouple Probe Assembly"
industry: "Manufacture of Measuring, Testing, Navigation and Control Equipment"
verification_protocol:
  urn: "URN:CNFX:ME:PRECISION_THERMOCOUPLE_PROBE_ASSEMBLY"
  data_integrity_hash: "d2659840f50bc6178c211a931cd5363c"
  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:PRECISION_THERMOCOUPLE_PROBE_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/manufacture-measuring-testing-navigation-equipment/product/precision-thermocouple-probe-assembly.md"
  official_resource_url: "https://cnfx.com/industry/manufacture-measuring-testing-navigation-equipment/product/precision-thermocouple-probe-assembly"
  is_verified_logic: true
attributes:
  response_time:
    status: "config-dependent"
    typical_range: "-200°C to 1200°C"
    unit: "seconds"
  temperature_range:
    status: "config-dependent"
    typical_range: "121-135 °C"
    unit: "°C"
engineering_limits:
  max_safe_operating_point:
    value: 1350
    unit: "°C"
    consequence: "Thermoelectric EMF degradation due to oxidation of Chromel wire above 1000°C, Seebeck coefficient drift beyond ±0.75% at 1100°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Thermal cycling between -200°C and 1200°C at &gt;5 cycles/hour"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Sheathed mineral-insulated construction with Inconel 600 sheath, cold-worked thermocouple wire with 20% elongation tolerance"
  - node_2:
      trigger: "Moisture ingress through compromised sheath at &gt;85% RH"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic seal welding with 0.1 mm leak rate specification, magnesium oxide insulation with &lt;0.5% moisture absorption"
bom_nodes:
  thermocouple-wires:
    type: "component"
    urn: "URN:CNFX:ME:THERMOCOUPLE_WIRES"
    interface_type: "physical-logic-coupled"
  protective-sheath:
    type: "component"
    urn: "URN:CNFX:ME:PROTECTIVE_SHEATH"
    interface_type: "physical-logic-coupled"
  mineral-insulation:
    type: "component"
    urn: "URN:CNFX:ME:MINERAL_INSULATION"
    interface_type: "physical-logic-coupled"
  termination-head:
    type: "component"
    urn: "URN:CNFX:ME:TERMINATION_HEAD"
    interface_type: "physical-logic-coupled"
  compression-fitting:
    type: "component"
    urn: "URN:CNFX:ME:COMPRESSION_FITTING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING FOR ELECTROMAGNETIC COMPATIBILITY DIRECTIVE 2014/30/EU"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/manufacture-measuring-testing-navigation-equipment/product/precision-thermocouple-probe-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "9a14f72ea023cdfc936a75793d0f7f734ef8c948a3f49ce2916f7074d43d4364"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Precision Thermocouple Probe Assembly

## 1. Technical Definition
Temperature sensing assembly for industrial measurement and control systems

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **-200°C to 1200°C**. Failure boundary: **1350°C for Type K thermocouple wire (melting point of Chromel-P), 0.5% measurement error threshold at 1000°C**, Mechanism: **Thermoelectric EMF degradation due to oxidation of Chromel wire above 1000°C, Seebeck coefficient drift beyond ±0.75% at 1100°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 |
| :--- | :--- | :--- | :--- |
| Thermal cycling between -200°C and 1200°C at &gt;5 cycles/hour | 8 | Thermocouple junction fatigue cracking | Sheathed mineral-insulated construction with Inconel 600 sheath, cold-worked thermocouple wire with 20% elongation tolerance |
| Moisture ingress through compromised sheath at &gt;85% RH | 8 | Galvanic corrosion between dissimilar metals (Chromel-Alumel) | Hermetic seal welding with 0.1 mm leak rate specification, magnesium oxide insulation with &lt;0.5% moisture absorption |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Temperature Calibration System**, **Signal Conditioning Module**, **Data Acquisition System**  
**Downstream Applications**: Industrial Process Controllers, Laboratory Testing Equipment, Environmental Monitoring Systems  

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

### Q: What makes this thermocouple probe suitable for harsh industrial environments?
**A**: The assembly uses Inconel 600 and Stainless Steel 316 construction with mineral insulation, providing excellent corrosion resistance and durability in demanding conditions.

### Q: How quickly does this thermocouple assembly respond to temperature changes?
**A**: With magnesium oxide insulation and optimized sheath design, it achieves rapid response times, typically under 5 seconds for most configurations.

### Q: What temperature range can this precision thermocouple probe handle?
**A**: The assembly operates reliably from -200°C to 1200°C, depending on sheath material and thermocouple type selection.

## 6. Manufacturing Compliance
- ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS
- CE MARKING FOR ELECTROMAGNETIC COMPATIBILITY DIRECTIVE 2014/30/EU

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Precision Thermocouple Probe Assembly](https://cnfx.com/industry/manufacture-measuring-testing-navigation-equipment/product/precision-thermocouple-probe-assembly)**

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

> **Reference ID**: PRECISION_THERMOCOUPLE_PROBE_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 159a2b20
