---
title: "Threshold Checker"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:THRESHOLD_CHECKER"
  data_integrity_hash: "e02674449d415737031b723b71114cb0"
  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:THRESHOLD_CHECKER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/threshold-checker.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/threshold-checker"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-100% of full-scale measurement input (e.g., 0-10 VDC, 4-20 mA, 0-1000 psi)"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: "N/A"
    unit: "N/A"
    consequence: "Hysteresis in comparator circuit due to thermal drift exceeding 50 μV/°C, causing threshold drift beyond acceptable error margin"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electromagnetic interference from adjacent 480V AC motor starters inducing 200 mV noise on signal lines"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Shielded twisted-pair cabling with 360° grounding at both ends and ferrite chokes on all I/O lines"
  - node_2:
      trigger: "Dielectric breakdown in 5V reference voltage regulator due to 125°C junction temperature exceeding 85°C rating"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Active thermal management with heatsink achieving 15°C/W thermal resistance and temperature-compensated reference IC"
bom_nodes:
  comparator-circuit:
    type: "part"
    urn: "URN:CNFX:ME:COMPARATOR_CIRCUIT"
    interface_type: "physical-logic-coupled"
  threshold-memory-module:
    type: "part"
    urn: "URN:CNFX:ME:THRESHOLD_MEMORY_MODULE"
    interface_type: "physical-logic-coupled"
  output-interface:
    type: "part"
    urn: "URN:CNFX:ME:OUTPUT_INTERFACE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME Y14.5-2018 DIMENSIONING AND TOLERANCING"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING (EU MACHINERY DIRECTIVE 2006/42/EC)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/threshold-checker.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "9640d845fe518d2282dc1237c5edbb22b6384e4e1a3f0cfdfd06335dbfbf3ad6"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Threshold Checker

## 1. Technical Definition
A component within the Match Evaluator system that verifies whether measured values meet predefined threshold criteria.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-100% of full-scale measurement input (e.g., 0-10 VDC, 4-20 mA, 0-1000 psi)**. Failure boundary: **±0.5% of full-scale accuracy degradation beyond 0.1% specified tolerance**, Mechanism: **Hysteresis in comparator circuit due to thermal drift exceeding 50 μV/°C, causing threshold drift beyond acceptable error margin**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Electromagnetic interference from adjacent 480V AC motor starters inducing 200 mV noise on signal lines | 8 | False threshold triggering at 87% of actual measured value | Shielded twisted-pair cabling with 360° grounding at both ends and ferrite chokes on all I/O lines |
| Dielectric breakdown in 5V reference voltage regulator due to 125°C junction temperature exceeding 85°C rating | 8 | Threshold reference voltage drift from 5.000V to 4.850V over 500 operating hours | Active thermal management with heatsink achieving 15°C/W thermal resistance and temperature-compensated reference IC |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Comparator Circuit](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/comparator-circuit.md) `(Standalone System)`
- [Threshold Memory Module](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/threshold-memory-module.md) `(Standalone System)`
- [Output Interface](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/output-interface.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Data Acquisition System**, **Signal Conditioning Unit**, **Industrial Computer**  
**Downstream Applications**: Quality-Certified Engine Components, Precision Calibrated Measurement Devices, Validated Industrial Control Systems  

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

### Q: What is the primary function of the Threshold Checker in machinery manufacturing?
**A**: The Threshold Checker continuously monitors measured values from sensors and compares them against predefined threshold criteria to ensure manufacturing equipment operates within specified quality parameters.

### Q: How does the Threshold Checker integrate with the Match Evaluator system?
**A**: As a core component of the Match Evaluator system, the Threshold Checker receives measurement data, performs threshold verification using its comparator circuit and memory module, then outputs pass/fail signals to the system's control interface.

### Q: What maintenance is required for the Threshold Checker in industrial environments?
**A**: The Threshold Checker requires minimal maintenance due to its sealed protective casing. Periodic calibration verification and inspection of electrical connections are recommended to ensure continued accuracy in harsh manufacturing environments.

## 6. Manufacturing Compliance
- ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS
- ANSI/ASME Y14.5-2018 DIMENSIONING AND TOLERANCING
- CE MARKING (EU MACHINERY DIRECTIVE 2006/42/EC)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Threshold Checker](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/threshold-checker)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: THRESHOLD_CHECKER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 66272b59
