---
title: "Sensor Module"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SENSOR_MODULE"
  data_integrity_hash: "6b3fe43e7df126dde3132671f8c05ea1"
  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:SENSOR_MODULE"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/sensor-module.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/sensor-module"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "400-5000 ppm CO2 concentration, -10°C to +60°C ambient temperature, 0-95% relative humidity non-condensing"
    unit: "ppm"
engineering_limits:
  max_safe_operating_point:
    value: 2
    unit: "concentration"
    consequence: "Non-dispersive infrared (NDIR) absorption spectroscopy failure due to: 1) Photodetector thermal runaway at 85°C, 2) Water vapor condensation altering infrared absorption path length at dew point, 3) CO2 molecular adsorption saturation on sensor surface at 10000 ppm"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Infrared source LED degradation below 50% initial intensity due to 10,000-hour operational lifetime"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement dual-wavelength reference channel with 760 nm reference LED and automatic intensity compensation algorithm"
  - node_2:
      trigger: "Thermal expansion mismatch between aluminum housing (α=23.1×10⁻⁶/K) and silicon photodetector (α=2.6×10⁻⁶/K) at ΔT&gt;40°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Use Kovar alloy (α=5.2×10⁻⁶/K) interposer with silver-filled epoxy adhesive (CTE=28×10⁻⁶/K)"
bom_nodes:
  infrared-source:
    type: "part"
    urn: "URN:CNFX:ME:INFRARED_SOURCE"
    interface_type: "physical-logic-coupled"
  optical-chamber:
    type: "part"
    urn: "URN:CNFX:ME:OPTICAL_CHAMBER"
    interface_type: "physical-logic-coupled"
  photodetector:
    type: "part"
    urn: "URN:CNFX:ME:PHOTODETECTOR"
    interface_type: "physical-logic-coupled"
  signal-processing-circuit:
    type: "part"
    urn: "URN:CNFX:ME:SIGNAL_PROCESSING_CIRCUIT"
    interface_type: "physical-logic-coupled"
  communication-interface:
    type: "part"
    urn: "URN:CNFX:ME:COMMUNICATION_INTERFACE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/sensor-module.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "d6324ef0ce5d82358947c063c7c34c89fd0682f0b7e0ba788027cf4b1e998d4f"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Sensor Module

## 1. Technical Definition
A modular electronic component designed to detect and measure CO2 concentration levels as part of a larger sensor array system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **400-5000 ppm CO2 concentration, -10°C to +60°C ambient temperature, 0-95% relative humidity non-condensing**. Failure boundary: **CO2 concentration &gt;10000 ppm causes sensor saturation and permanent calibration drift, temperature &gt;85°C damages NDIR optical components, humidity &gt;98% causes condensation on optical surfaces**, Mechanism: **Non-dispersive infrared (NDIR) absorption spectroscopy failure due to: 1) Photodetector thermal runaway at 85°C, 2) Water vapor condensation altering infrared absorption path length at dew point, 3) CO2 molecular adsorption saturation on sensor surface at 10000 ppm**.

### 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 |
| :--- | :--- | :--- | :--- |
| Infrared source LED degradation below 50% initial intensity due to 10,000-hour operational lifetime | 8 | Signal-to-noise ratio drops below 3:1, causing measurement error &gt;±75 ppm | Implement dual-wavelength reference channel with 760 nm reference LED and automatic intensity compensation algorithm |
| Thermal expansion mismatch between aluminum housing (α=23.1×10⁻⁶/K) and silicon photodetector (α=2.6×10⁻⁶/K) at ΔT&gt;40°C | 8 | Mechanical stress &gt;15 MPa causes photodetector delamination and 100% signal loss | Use Kovar alloy (α=5.2×10⁻⁶/K) interposer with silver-filled epoxy adhesive (CTE=28×10⁻⁶/K) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Infrared Source](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/infrared-source.md) `(Standalone System)`
- [Optical Chamber](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/optical-chamber.md) `(Standalone System)`
- [Photodetector](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/photodetector.md) `(Standalone System)`
- [Signal Processing Circuit](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/signal-processing-circuit.md) `(Standalone System)`
- [Communication Interface](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/communication-interface.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Environmental Test Chamber**, **Automated Optical Inspection System**, **Gas Calibration Station**  
**Downstream Applications**: Indoor Air Quality Monitors, HVAC Control Systems, Portable CO2 Detectors  

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

### Q: What is the typical detection range for this CO2 sensor module?
**A**: This modular CO2 sensor typically detects concentrations from 0-5000 ppm with ±50 ppm accuracy, suitable for industrial environmental monitoring applications.

### Q: How does the infrared detection technology work in this module?
**A**: The module uses non-dispersive infrared (NDIR) technology where an infrared light source passes through an optical chamber containing the gas sample, and a photodetector measures absorption to calculate CO2 concentration.

### Q: What communication interfaces are supported for integration into larger systems?
**A**: The module typically supports I2C, SPI, UART, or analog voltage output interfaces for seamless integration into sensor arrays and industrial monitoring systems.

## 6. Manufacturing Compliance
- ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Sensor Module](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/sensor-module)**

### 🌐 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**: SENSOR_MODULE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 618a6f4d
