---
title: "Temperature Gauge"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:TEMPERATURE_GAUGE"
  data_integrity_hash: "ed236765cbe44758d85f696dfc3641f4"
  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:TEMPERATURE_GAUGE"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/temperature-gauge.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/temperature-gauge"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "-40°C to 150°C"
    unit: "°C/°F"
engineering_limits:
  max_safe_operating_point:
    value: 0.5
    unit: "mm"
    consequence: "Thermal expansion coefficient mismatch (α_bimetal=18×10⁻⁶/K vs α_housing=11×10⁻⁶/K) causing mechanical stress exceeding yield strength (σ_y=250 MPa)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Coolant pH &lt; 6.5 causing galvanic corrosion"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "316L stainless steel housing with PTFE coating (corrosion rate &lt;0.01mm/year)"
  - node_2:
      trigger: "Vibration amplitude &gt; 5g at 100-500Hz resonance"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Helical capillary routing with silicone damping mounts (transmissibility &lt;0.2 at 200Hz)"
bom_nodes:
  temperature-sensor:
    type: "part"
    urn: "URN:CNFX:ME:TEMPERATURE_SENSOR"
    interface_type: "physical-logic-coupled"
  gauge-movement:
    type: "part"
    urn: "URN:CNFX:ME:GAUGE_MOVEMENT"
    interface_type: "physical-logic-coupled"
  face-plate:
    type: "component"
    urn: "URN:CNFX:ME:FACE_PLATE"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 3864-1:2011 (SAFETY COLORS AND SAFETY SIGNS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B40.1-2020 (PRESSURE GAUGES AND GAUGE ATTACHMENTS)"
    scope: "Verified Engineering Specification"
  - standard: "EN 13190:2001 (DIAL THERMOMETERS - REQUIREMENTS AND TESTING METHODS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/temperature-gauge.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "f318972ac6a1522fcecd0648649386a94fd1efde71453d07c8126fa564bb94dc"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Temperature Gauge

## 1. Technical Definition
An instrument that measures and displays the temperature of a vehicle's engine coolant or oil.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **-40°C to 150°C**. Failure boundary: **Bimetallic strip deformation exceeds 0.5mm at 180°C, bourdon tube yields at 200 bar internal pressure**, Mechanism: **Thermal expansion coefficient mismatch (α_bimetal=18×10⁻⁶/K vs α_housing=11×10⁻⁶/K) causing mechanical stress exceeding yield strength (σ_y=250 MPa)**.

### 2.1 Analytical Physics Model
Governed by the **Heat Sterilization F0 Lethality Model**:

> **Primary Equation**: $F_0 = \int_{0}^{t} 10^{(T-121.1)/z} dt$  
> **Engineering Impact**: Validates microbial reduction integrity for aseptic packaging.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| T | Process Temp (°C) | **$T \in [121-135]$ °C** (Per `temperature_range`) |
| t | Exposure Time (min) | Engineering Constant |
| z | Z-value | **10 °C** (Standard for *C. botulinum*) |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Coolant pH &lt; 6.5 causing galvanic corrosion | 8 | Sensor diaphragm perforation (0.1mm thickness compromised) | 316L stainless steel housing with PTFE coating (corrosion rate &lt;0.01mm/year) |
| Vibration amplitude &gt; 5g at 100-500Hz resonance | 8 | Capillary tube fracture at brazed joints (stress concentration factor Kt=3.2) | Helical capillary routing with silicone damping mounts (transmissibility &lt;0.2 at 200Hz) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Temperature Sensor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/temperature-sensor.md) `(Standalone System)`
- [Gauge Movement](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/gauge-movement.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Calibration Equipment**, **Automated Assembly Line**, **Environmental Test Chamber**  
**Downstream Applications**: Engine Assembly, Vehicle Dashboard, Engine Control Unit  

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

### Q: What materials make this temperature gauge durable for vehicle use?
**A**: This gauge features a robust plastic housing, a scratch-resistant glass or polycarbonate lens, and corrosion-resistant copper or steel internal components, ensuring longevity in harsh automotive environments.

### Q: How does this temperature gauge help prevent engine damage?
**A**: By continuously monitoring engine coolant or oil temperature, this gauge alerts drivers to overheating conditions early, allowing for timely intervention to prevent costly engine damage and maintain optimal performance.

### Q: What are the main components included in this temperature gauge?
**A**: The gauge consists of a face plate for clear readings, a precise gauge movement mechanism, a protective housing, and a reliable temperature sensor that integrates with the vehicle's engine system.

## 6. Manufacturing Compliance
- ISO 3864-1:2011 (SAFETY COLORS AND SAFETY SIGNS)
- ANSI/ASME B40.1-2020 (PRESSURE GAUGES AND GAUGE ATTACHMENTS)
- EN 13190:2001 (DIAL THERMOMETERS - REQUIREMENTS AND TESTING METHODS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Temperature Gauge](https://cnfx.com/industry/motor-vehicle-manufacturing/product/temperature-gauge)**

### 🌐 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**: TEMPERATURE_GAUGE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 755ed4f1
