---
title: "Float Switch"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FLOAT_SWITCH"
  data_integrity_hash: "6f21d5c8296aad79763ae7413aa9c04c"
  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:FLOAT_SWITCH"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/float-switch.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/float-switch"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-10 bar differential pressure, -40°C to 125°C ambient temperature, 0-100% relative humidity non-condensing"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.98
    unit: "N"
    consequence: "Archimedes' principle failure at fluid density &lt; 800 kg/m³, switch contact welding at current &gt; 10 A DC/5 A AC, float mechanical binding at particulate concentration &gt; 100 ppm"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Fluid density variation beyond ±5% of calibrated 1000 kg/m³"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Density-compensated float design with integrated temperature sensor and correction algorithm"
  - node_2:
      trigger: "Switch contact arcing at inductive load disconnection exceeding 0.5 J energy"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Snubber circuit with 100 Ω resistor and 0.1 μF capacitor in parallel with switch contacts"
bom_nodes:
  float:
    type: "component"
    urn: "URN:CNFX:ME:FLOAT"
    interface_type: "physical-logic-coupled"
  stemrod:
    type: "component"
    urn: "URN:CNFX:ME:STEMROD"
    interface_type: "physical-logic-coupled"
  internal-switch:
    type: "component"
    urn: "URN:CNFX:ME:INTERNAL_SWITCH"
    interface_type: "physical-logic-coupled"
  sealing-gland:
    type: "component"
    urn: "URN:CNFX:ME:SEALING_GLAND"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/float-switch.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "cce18c97eb3d1d81edc3db6125d6ac28673f6adf9696ab40bcc8e4b0a833a522"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Float Switch

## 1. Technical Definition
A liquid level sensor that uses a buoyant float to actuate an electrical switch.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-10 bar differential pressure, -40°C to 125°C ambient temperature, 0-100% relative humidity non-condensing**. Failure boundary: **Float buoyancy force &lt; 0.98 N (switch actuation threshold), switch contact resistance &gt; 50 mΩ, float displacement &gt; ±2 mm from calibrated position**, Mechanism: **Archimedes' principle failure at fluid density &lt; 800 kg/m³, switch contact welding at current &gt; 10 A DC/5 A AC, float mechanical binding at particulate concentration &gt; 100 ppm**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Fluid density variation beyond ±5% of calibrated 1000 kg/m³ | 8 | False level indication due to incorrect buoyancy force calculation | Density-compensated float design with integrated temperature sensor and correction algorithm |
| Switch contact arcing at inductive load disconnection exceeding 0.5 J energy | 8 | Contact welding causing permanent circuit closure | Snubber circuit with 100 Ω resistor and 0.1 μF capacitor in parallel with switch contacts |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Liquid Level Controller**, **Process Tank or Vessel**, **Electrical Control Panel**  
**Downstream Applications**: Industrial Pumps, Water Treatment Systems, Chemical Processing Equipment  

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

### Q: What materials make this float switch suitable for industrial machinery applications?
**A**: This float switch uses polypropylene for corrosion-resistant buoyancy, stainless steel for durable stem construction, and epoxy resin for reliable sealing against harsh industrial environments.

### Q: How does the float switch detect liquid levels in equipment manufacturing?
**A**: The buoyant polypropylene float rises or falls with liquid levels, mechanically actuating an internal electrical switch via the stainless steel stem to signal level changes for process control.

### Q: What are the key components in the float switch BOM for maintenance?
**A**: The bill of materials includes the polypropylene float, stainless steel stem/rod, internal electrical switch mechanism, and sealing gland with epoxy resin for easy maintenance and replacement.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Float Switch](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/float-switch)**

### 🌐 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**: FLOAT_SWITCH | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: fa68e761
