---
title: "Load Moment Indicator (LMI)"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LOAD_MOMENT_INDICATOR_LMI"
  data_integrity_hash: "35521738d761ba2519605ae63bfb4b72"
  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:LOAD_MOMENT_INDICATOR_LMI"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/load-moment-indicator-lmi.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/load-moment-indicator-lmi"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-100% of rated load moment (e.g., 0-500 kN·m for a 50-ton crane at 10m radius)"
    unit: "kN·m or t·m"
engineering_limits:
  max_safe_operating_point:
    value: 2
    unit: "seconds"
    consequence: "Sensor strain gauge deformation beyond 0.2% yield point causing permanent calibration loss"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Moisture ingress exceeding 85% relative humidity"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic sealing with IP67 rating and desiccant packets"
  - node_2:
      trigger: "Electromagnetic interference from 10-100 MHz radio transmitters"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Shielded twisted-pair cabling with ferrite chokes at 50 mm intervals"
bom_nodes:
  load-sensor-load-cell:
    type: "part"
    urn: "URN:CNFX:ME:LOAD_SENSOR_LOAD_CELL"
    interface_type: "physical-logic-coupled"
  angle-sensor:
    type: "part"
    urn: "URN:CNFX:ME:ANGLE_SENSOR"
    interface_type: "physical-logic-coupled"
  processor-unit-cpu:
    type: "part"
    urn: "URN:CNFX:ME:PROCESSOR_UNIT_CPU"
    interface_type: "physical-logic-coupled"
  operator-display:
    type: "part"
    urn: "URN:CNFX:ME:OPERATOR_DISPLAY"
    interface_type: "physical-logic-coupled"
  audible-alarm:
    type: "part"
    urn: "URN:CNFX:ME:AUDIBLE_ALARM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 12100:2010 - SAFETY OF MACHINERY"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B30.5-2021 - MOBILE AND LOCOMOTIVE CRANES"
    scope: "Verified Engineering Specification"
  - standard: "DIN 15018-1:1984 - CRANES; PRINCIPLES FOR STEEL STRUCTURES; CALCULATION"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/load-moment-indicator-lmi.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "60035fa1050b36499ebcefc201c52a959a530cdda06e86ac5624eeab79af347a"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Load Moment Indicator (LMI)

## 1. Technical Definition
A safety device that monitors and displays the load moment (load × radius) of a crane to prevent overload conditions.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-100% of rated load moment (e.g., 0-500 kN·m for a 50-ton crane at 10m radius)**. Failure boundary: **Load moment exceeding 110% of rated capacity for &gt;2 seconds**, Mechanism: **Sensor strain gauge deformation beyond 0.2% yield point causing permanent calibration loss**.

### 2.1 Analytical Physics Model
Governed by the **L10 Bearing Life & Fatigue Model**:

> **Primary Equation**: $L_{10} = (\frac{C}{P})^p$  
> **Engineering Impact**: Predicts mechanical lifecycle before component fatigue.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| C | Dynamic Load Rating | Engineering Constant |
| P | Equivalent Dynamic Load | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Moisture ingress exceeding 85% relative humidity | 8 | Corrosion-induced electrical short circuit in load cell Wheatstone bridge | Hermetic sealing with IP67 rating and desiccant packets |
| Electromagnetic interference from 10-100 MHz radio transmitters | 8 | Signal noise exceeding 5 mV RMS causing false overload readings | Shielded twisted-pair cabling with ferrite chokes at 50 mm intervals |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | kN·m or t·m | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Load Sensor (Load Cell)](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/load-sensor-load-cell.md) `(Standalone System)`
- [Angle Sensor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/angle-sensor.md) `(Standalone System)`
- [Processor Unit (CPU)](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/processor-unit-cpu.md) `(Standalone System)`
- [Operator Display](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/operator-display.md) `(Standalone System)`
- [Audible Alarm](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/audible-alarm.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Crane Control System**, **Load Cell Sensor**, **Operator Display Interface**  
**Downstream Applications**: Construction Cranes, Marine Cranes, Mining Equipment  

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

### Q: How does a Load Moment Indicator prevent crane overloads?
**A**: The LMI continuously calculates load moment (load × radius) using load cells and angle sensors, triggering audible alarms and visual warnings when approaching dangerous thresholds to prevent structural failures.

### Q: What materials ensure durability in industrial LMI systems?
**A**: Our LMI features stainless steel sensor housings for corrosion resistance, aluminum alloy structural casing for strength, and polycarbonate display screens for impact resistance in harsh environments.

### Q: What components are included in the LMI BOM?
**A**: The complete system includes: Load Sensor (Load Cell) for weight measurement, Angle Sensor for boom position, Processor Unit (CPU) for calculations, Operator Display for real-time monitoring, and Audible Alarm for immediate warnings.

## 6. Manufacturing Compliance
- ISO 12100:2010 - SAFETY OF MACHINERY
- ANSI/ASME B30.5-2021 - MOBILE AND LOCOMOTIVE CRANES
- DIN 15018-1:1984 - CRANES; PRINCIPLES FOR STEEL STRUCTURES; CALCULATION

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Load Moment Indicator (LMI)](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/load-moment-indicator-lmi)**

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

> **Reference ID**: LOAD_MOMENT_INDICATOR_LMI | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8d8328ee
