---
title: "Photometric Sensor"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PHOTOMETRIC_SENSOR"
  data_integrity_hash: "d443c66f75d9e1fd9e0c8ec852c12be7"
  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:PHOTOMETRIC_SENSOR"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/photometric-sensor.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/photometric-sensor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100,000 lux"
    unit: "nm"
engineering_limits:
  max_safe_operating_point:
    value: 000
    unit: "lux"
    consequence: "Photodiode quantum efficiency degradation due to prolonged exposure &gt;100,000 lux causing lattice displacement in silicon PN junction"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Ambient temperature exceeding 85°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Peltier cooling element maintaining sensor temperature at 25±2°C"
  - node_2:
      trigger: "Moisture ingress exceeding 85% RH for &gt;24 hours"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic sealing with IP68 rating and desiccant chamber"
bom_nodes:
  photosensitive-element:
    type: "component"
    urn: "URN:CNFX:ME:PHOTOSENSITIVE_ELEMENT"
    interface_type: "physical-logic-coupled"
  optical-windowlens:
    type: "component"
    urn: "URN:CNFX:ME:OPTICAL_WINDOWLENS"
    interface_type: "physical-logic-coupled"
  signal-conditioning-circuit:
    type: "device"
    urn: "URN:CNFX:ME:SIGNAL_CONDITIONING_CIRCUIT"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 15004-2:2007 (OPHTHALMIC INSTRUMENTS - FUNDAMENTAL REQUIREMENTS AND TEST METHODS FOR OPTICAL RADIATION SAFETY)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 5032-7:2017 (PHOTOMETRY - PART 7: CLASSIFICATION OF PHOTOMETRIC SENSORS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/photometric-sensor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "3b53ee86db9c3f16b5f9e030e21dfd28bdeae844f75e3227f83e185a85b930be"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Photometric Sensor

## 1. Technical Definition
A sensor that measures light intensity or optical properties for testing purposes

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100,000 lux**. Failure boundary: **Photodiode saturation at 120,000 lux causing non-linear response &gt;5% deviation**, Mechanism: **Photodiode quantum efficiency degradation due to prolonged exposure &gt;100,000 lux causing lattice displacement in silicon PN junction**.

### 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 |
| :--- | :--- | :--- | :--- |
| Ambient temperature exceeding 85°C | 8 | Thermal noise increase to 50μV RMS, signal-to-noise ratio degradation below 20dB | Peltier cooling element maintaining sensor temperature at 25±2°C |
| Moisture ingress exceeding 85% RH for &gt;24 hours | 8 | Optical window condensation causing 40% light transmission loss | Hermetic sealing with IP68 rating and desiccant chamber |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Signal Conditioning Circuit](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/signal-conditioning-circuit.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Calibration Light Source**, **Optical Test Bench**, **Data Acquisition System**  
**Downstream Applications**: Display Screens, Optical Lenses, Photovoltaic Cells  

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

### Q: What applications is this photometric sensor suitable for in electronics manufacturing?
**A**: This sensor is ideal for quality control testing of displays, LEDs, optical components, and photometric calibration in computer, electronic, and optical product manufacturing environments.

### Q: How does the silicon photodiode and optical glass lens combination improve measurement accuracy?
**A**: The silicon photodiode provides high sensitivity across visible light spectra, while the optical glass lens ensures minimal distortion and maximum light transmission, resulting in precise, repeatable measurements.

### Q: What are the key durability features of the aluminum housing?
**A**: The aluminum housing offers EMI/RFI shielding, thermal stability for consistent performance, and industrial-grade protection against environmental factors in manufacturing settings.

## 6. Manufacturing Compliance
- ISO 15004-2:2007 (OPHTHALMIC INSTRUMENTS - FUNDAMENTAL REQUIREMENTS AND TEST METHODS FOR OPTICAL RADIATION SAFETY)
- DIN 5032-7:2017 (PHOTOMETRY - PART 7: CLASSIFICATION OF PHOTOMETRIC SENSORS)

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

### 🌐 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**: PHOTOMETRIC_SENSOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: df900378
