---
title: "Measurement Head"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MEASUREMENT_HEAD"
  data_integrity_hash: "be4ee296bdaf153b6c7a6a8270fef8fa"
  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:MEASUREMENT_HEAD"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/measurement-head.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/measurement-head"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100 mm material thickness, 0-150°C ambient temperature, 0-100% relative humidity"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 50
    unit: "N"
    consequence: "Plastic deformation of tungsten carbide sensing tip due to Hertzian contact stress exceeding 3.5 GPa yield strength, thermal expansion mismatch between Invar alloy housing and alumina ceramic insulator at ΔT &gt; 80°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrostatic discharge exceeding 15 kV during material handling"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrated Faraday cage shielding with 0.5 mm aluminum enclosure and 1 MΩ bleed resistor to chassis ground"
  - node_2:
      trigger: "Cyclic thermal loading from 20-120°C at 5 Hz frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Active Peltier cooling maintaining 25±2°C operating temperature with PID control"
bom_nodes:
  sensing-element:
    type: "component"
    urn: "URN:CNFX:ME:SENSING_ELEMENT"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
  connector:
    type: "component"
    urn: "URN:CNFX:ME:CONNECTOR"
    interface_type: "physical-logic-coupled"
  wear-plate:
    type: "component"
    urn: "URN:CNFX:ME:WEAR_PLATE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 10360-2:2009 (COORDINATE MEASURING MACHINES)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/measurement-head.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "71df0fe67461ff0a2991df2f90d806f0d59266272d15c3fea250a55eb174177d"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Measurement Head

## 1. Technical Definition
The sensing component of a thickness sensor that directly contacts or interacts with the material being measured.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100 mm material thickness, 0-150°C ambient temperature, 0-100% relative humidity**. Failure boundary: **Contact force exceeding 50 N causes permanent deformation of sensing tip, measurement accuracy degrades beyond ±0.5 μm deviation from calibrated baseline**, Mechanism: **Plastic deformation of tungsten carbide sensing tip due to Hertzian contact stress exceeding 3.5 GPa yield strength, thermal expansion mismatch between Invar alloy housing and alumina ceramic insulator at ΔT &gt; 80°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 |
| :--- | :--- | :--- | :--- |
| Electrostatic discharge exceeding 15 kV during material handling | 8 | Piezoelectric crystal depolarization causing 95% sensitivity loss | Integrated Faraday cage shielding with 0.5 mm aluminum enclosure and 1 MΩ bleed resistor to chassis ground |
| Cyclic thermal loading from 20-120°C at 5 Hz frequency | 8 | Thermal fatigue cracking at brazed Invar-alumina joint interface | Active Peltier cooling maintaining 25±2°C operating temperature with PID control |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Signal Conditioning Unit**, **Data Acquisition System**, **Calibration Fixture**  
**Downstream Applications**: Rolling Mill Control Systems, Paper Manufacturing Lines, Plastic Film Production Equipment  

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

### Q: What materials are used in the measurement head construction?
**A**: The measurement head features a stainless steel housing, ceramic or quartz sensing elements for precision, copper wiring for reliable conductivity, and epoxy encapsulation for environmental protection.

### Q: How does the measurement head interact with materials during thickness measurement?
**A**: The measurement head is the sensing component that directly contacts or interacts with the material surface, using its sensing elements to detect thickness variations while the wear plate protects against abrasion.

### Q: What are the main components in the measurement head BOM?
**A**: The bill of materials includes the connector for signal transmission, housing for protection, sensing element for measurement accuracy, and wear plate for durability against material contact.

## 6. Manufacturing Compliance
- ISO 10360-2:2009 (COORDINATE MEASURING MACHINES)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Measurement Head](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/measurement-head)**

### 🌐 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**: MEASUREMENT_HEAD | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 3bffe423
