---
title: "Fluid Level Sensor"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FLUID_LEVEL_SENSOR"
  data_integrity_hash: "32c495c6992b8cb3fde06ca761d9a247"
  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:FLUID_LEVEL_SENSOR"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/fluid-level-sensor.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/fluid-level-sensor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-100 kPa differential pressure, -40°C to 125°C ambient temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 150
    unit: "kPa"
    consequence: "Diaphragm plastic deformation at 150 kPa exceeding 0.2% yield strain, dielectric breakdown at 140°C exceeding 150°C glass transition temperature of polyimide insulation"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Capacitance plate contamination by conductive fluid particles exceeding 5μm diameter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic sealing with 0.1μm PTFE membrane and redundant optical backup sensor"
  - node_2:
      trigger: "Thermal cycling between -40°C and 125°C at 10°C/minute rate"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Conformal coating with 0.5mm silicone gel and strain-relief mounting"
bom_nodes:
  probesensing-element:
    type: "component"
    urn: "URN:CNFX:ME:PROBESENSING_ELEMENT"
    interface_type: "physical-logic-coupled"
  signal-transmitter:
    type: "part"
    urn: "URN:CNFX:ME:SIGNAL_TRANSMITTER"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 4406:2021 - FLUID CLEANLINESS CLASSIFICATION"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/fluid-level-sensor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a2ed3193e2f325c1f50b3f5b172ec3502d042866113e98cf4d0bc71f8db131bd"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Fluid Level Sensor

## 1. Technical Definition
A device that detects and measures the level of fluid within a reservoir.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-100 kPa differential pressure, -40°C to 125°C ambient temperature**. Failure boundary: **150 kPa overpressure, 140°C internal temperature, 95% relative humidity continuous exposure**, Mechanism: **Diaphragm plastic deformation at 150 kPa exceeding 0.2% yield strain, dielectric breakdown at 140°C exceeding 150°C glass transition temperature of polyimide insulation**.

### 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 |
| :--- | :--- | :--- | :--- |
| Capacitance plate contamination by conductive fluid particles exceeding 5μm diameter | 8 | Capacitance measurement drift beyond ±0.5% FS accuracy | Hermetic sealing with 0.1μm PTFE membrane and redundant optical backup sensor |
| Thermal cycling between -40°C and 125°C at 10°C/minute rate | 8 | Solder joint fatigue cracking after 5000 cycles | Conformal coating with 0.5mm silicone gel and strain-relief mounting |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Signal Conditioner**, **Programmable Logic Controller**, **Power Supply Unit**  
**Downstream Applications**: Industrial Boilers, Chemical Processing Tanks, Hydraulic Systems  

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

### Q: What materials are used in this fluid level sensor?
**A**: This sensor is constructed with a stainless steel probe for durability, plastic housing for corrosion resistance, and electronic components for accurate signal transmission.

### Q: How does this sensor measure fluid levels in machinery reservoirs?
**A**: The probe/sensing element detects fluid presence and level, then the signal transmitter converts this data into an electronic signal for monitoring systems.

### Q: What industries is this fluid level sensor suitable for?
**A**: Specifically designed for machinery and equipment manufacturing, it's ideal for monitoring hydraulic fluids, coolants, lubricants, and other industrial fluids in reservoirs.

## 6. Manufacturing Compliance
- ISO 4406:2021 - FLUID CLEANLINESS CLASSIFICATION

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Fluid Level Sensor](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/fluid-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**: FLUID_LEVEL_SENSOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 7f7a9c53
