---
title: "Liquid Level Sensor"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LIQUID_LEVEL_SENSOR"
  data_integrity_hash: "e43bdb99fea896d49093289cd81d00d7"
  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:LIQUID_LEVEL_SENSOR"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/liquid-level-sensor.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/liquid-level-sensor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 cm H₂O (0-14.7 kPa differential pressure)"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 200
    unit: "cm"
    consequence: "Diaphragm rupture due to overpressure exceeding yield strength of 316L stainless steel (205 MPa) or chemical corrosion of sensing element"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrolytic corrosion from chloride concentration &gt;1000 ppm in lime slurry"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Installation of PTFE-coated sensing diaphragm with 0.5 mm thickness"
  - node_2:
      trigger: "Thermal shock from &gt;50°C/min temperature gradient during vat cleaning"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implementation of alumina-based substrate with CTE 7.2×10⁻⁶/°C matching 316L housing"
bom_nodes:
  sensing-probe:
    type: "part"
    urn: "URN:CNFX:ME:SENSING_PROBE"
    interface_type: "physical-logic-coupled"
  transmitter-housing:
    type: "component"
    urn: "URN:CNFX:ME:TRANSMITTER_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 POTENTIALLY EXPLOSIVE ATMOSPHERES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/liquid-level-sensor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "ae18cc9051cbeb59d2000bb229e996e5f0c4eda30964773aeef818465ca0bca1"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Liquid Level Sensor

## 1. Technical Definition
A sensor that detects and measures the liquid level within the liming vat.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 cm H₂O (0-14.7 kPa differential pressure)**. Failure boundary: **Exceeding 200 cm H₂O (19.6 kPa) differential pressure or exposure to pH &lt;2 or &gt;12**, Mechanism: **Diaphragm rupture due to overpressure exceeding yield strength of 316L stainless steel (205 MPa) or chemical corrosion of sensing element**.

### 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 |
| :--- | :--- | :--- | :--- |
| Electrolytic corrosion from chloride concentration &gt;1000 ppm in lime slurry | 8 | Sensor membrane perforation causing false zero-level readings | Installation of PTFE-coated sensing diaphragm with 0.5 mm thickness |
| Thermal shock from &gt;50°C/min temperature gradient during vat cleaning | 8 | Ceramic substrate cracking at thermal expansion mismatch with metal housing | Implementation of alumina-based substrate with CTE 7.2×10⁻⁶/°C matching 316L housing |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Sensing Probe](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/sensing-probe.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Signal Conditioner**, **Programmable Logic Controller**, **Liquid Storage Tank**  
**Downstream Applications**: Processed Liming Vat, Automated Liming System, Industrial Control Panel  

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

### Q: What materials make this liquid level sensor suitable for liming vats?
**A**: Constructed with corrosion-resistant stainless steel, durable polymers, and ceramic sensing probes to withstand harsh chemical environments in liming vats.

### Q: How does this sensor measure liquid levels in industrial machinery?
**A**: The sensing probe detects liquid presence and transmits data through the electrical connector to monitoring systems, housed in a protective transmitter housing for accurate level measurement.

### Q: What are the key components in this sensor's bill of materials?
**A**: The BOM includes an electrical connector for power/data transmission, a sensing probe for level detection, and a transmitter housing that protects internal components in industrial settings.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Liquid Level Sensor](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/liquid-level-sensor)**

### 🌐 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**: LIQUID_LEVEL_SENSOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 0fc4b89a
