---
title: "Feedback Sensor (e.g., LVDT)"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FEEDBACK_SENSOR_E_G_LVDT"
  data_integrity_hash: "ecfec413a88d3b5fbd2d2b53997ff4ad"
  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:FEEDBACK_SENSOR_E_G_LVDT"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/feedback-sensor-e-g-lvdt.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/feedback-sensor-e-g-lvdt"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-10 VDC output for ±5 mm displacement"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 5.5
    unit: "mm"
    consequence: "Magnetic flux density exceeding 1.6 Tesla saturates ferromagnetic core material, causing irreversible permeability loss"
fmea_matrix_quantitative:
  - node_1:
      trigger: "AC ripple voltage exceeding 100 mVpp on DC excitation supply"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement π-filter with 60 dB attenuation at 120 Hz on excitation input"
  - node_2:
      trigger: "Hydraulic fluid contamination with 15 μm+ ferrous particles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install dual 10 μm absolute filters in parallel with differential pressure monitoring"
bom_nodes:
  movable-core:
    type: "component"
    urn: "URN:CNFX:ME:MOVABLE_CORE"
    interface_type: "physical-logic-coupled"
  coil-assembly:
    type: "part"
    urn: "URN:CNFX:ME:COIL_ASSEMBLY"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
  electrical-connector:
    type: "component"
    urn: "URN:CNFX:ME:ELECTRICAL_CONNECTOR"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "ATEX DIRECTIVE 2014/34/EU - EQUIPMENT FOR EXPLOSIVE ATMOSPHERES (IF APPLICABLE)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/feedback-sensor-e-g-lvdt.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "cbb7fb68480f50261b2d56b4b6a25ce69bcccb7974b863a3a5b26b2c3041e2c1"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Feedback Sensor (e.g., LVDT)

## 1. Technical Definition
A sensor that provides real-time position feedback for servo control valve spools.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-10 VDC output for ±5 mm displacement**. Failure boundary: **Core displacement exceeding ±5.5 mm causes permanent magnetic saturation**, Mechanism: **Magnetic flux density exceeding 1.6 Tesla saturates ferromagnetic core material, causing irreversible permeability loss**.

### 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 |
| :--- | :--- | :--- | :--- |
| AC ripple voltage exceeding 100 mVpp on DC excitation supply | 8 | Induced eddy currents in core generate 85°C+ localized heating | Implement π-filter with 60 dB attenuation at 120 Hz on excitation input |
| Hydraulic fluid contamination with 15 μm+ ferrous particles | 8 | Particle accumulation between core and bore creates 0.1 mm+ mechanical binding | Install dual 10 μm absolute filters in parallel with differential pressure monitoring |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Servo Control Valve**, **Signal Conditioner/Amplifier**, **Programmable Logic Controller (PLC)**  
**Downstream Applications**: Hydraulic Actuators, Precision Machine Tools, Industrial Robotics  

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

### Q: What is the primary function of this feedback sensor in machinery manufacturing?
**A**: This LVDT sensor provides real-time, high-precision position feedback for servo control valve spools, enabling accurate motion control and automation in industrial machinery systems.

### Q: What materials ensure the durability of this sensor in industrial environments?
**A**: The sensor features a stainless steel housing for corrosion resistance, epoxy potting compound for environmental protection, nickel-iron alloy ferromagnetic core for precise sensing, and copper windings for reliable electrical performance.

### Q: How does this sensor integrate with servo control systems?
**A**: The sensor connects via its electrical connector to provide continuous position data to servo controllers, allowing for closed-loop control that maintains precise valve spool positioning despite load variations or system disturbances.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- ATEX DIRECTIVE 2014/34/EU - EQUIPMENT FOR EXPLOSIVE ATMOSPHERES (IF APPLICABLE)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Feedback Sensor (e.g., LVDT)](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/feedback-sensor-e-g-lvdt)**

### 🌐 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**: FEEDBACK_SENSOR_E_G_LVDT | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: fa53ce03
