---
title: "Pneumatic Relay / Amplifier"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PNEUMATIC_RELAY_AMPLIFIER"
  data_integrity_hash: "f76042602c01b7c7ffbe300ed5088d30"
  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:PNEUMATIC_RELAY_AMPLIFIER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pneumatic-relay-amplifier.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pneumatic-relay-amplifier"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.02-0.1 bar input to 0.2-1.0 bar output"
    unit: "psi"
engineering_limits:
  max_safe_operating_point:
    value: 0.15
    unit: "bar"
    consequence: "Diaphragm material yield strength (316L stainless steel: 205 MPa) exceeded by Bernoulli force differential across nozzle-flapper gap"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Particulate contamination (ISO 4406 Class 6/4/3) in supply air"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dual-stage filtration (5 μm coalescing + 0.01 μm adsorption) with differential pressure monitoring"
  - node_2:
      trigger: "Ambient temperature cycling (-20°C to +60°C) exceeding elastomer glass transition"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Fluorocarbon (FKM) seals with thermal compensation bellows (CTE: 17.3 μm/m·K)"
bom_nodes:
  input-diaphragmbellows:
    type: "component"
    urn: "URN:CNFX:ME:INPUT_DIAPHRAGMBELLOWS"
    interface_type: "physical-logic-coupled"
  pilot-valve:
    type: "part"
    urn: "URN:CNFX:ME:PILOT_VALVE"
    interface_type: "physical-logic-coupled"
  output-chamber:
    type: "part"
    urn: "URN:CNFX:ME:OUTPUT_CHAMBER"
    interface_type: "physical-logic-coupled"
  adjustment-spring:
    type: "component"
    urn: "URN:CNFX:ME:ADJUSTMENT_SPRING"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 8573-1:2010 (COMPRESSED AIR QUALITY CLASSES)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ISA-7.0.01-1996 (QUALITY STANDARD FOR INSTRUMENT AIR)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pneumatic-relay-amplifier.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "aa606065d68aa585a44ad3ae8f30e55f6f99c36dad2505c42dee35c1f438abc9"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Pneumatic Relay / Amplifier

## 1. Technical Definition
A pneumatic device that amplifies and relays low-pressure control signals to higher-pressure outputs within an I/P converter system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.02-0.1 bar input to 0.2-1.0 bar output**. Failure boundary: **Input pressure exceeding 0.15 bar causes diaphragm rupture at 0.18 bar**, Mechanism: **Diaphragm material yield strength (316L stainless steel: 205 MPa) exceeded by Bernoulli force differential across nozzle-flapper gap**.

### 2.1 Analytical Physics Model
Governed by the **Pneumatic Actuator Theoretical Force**:

> **Primary Equation**: $F = P \cdot A \cdot \eta_{eff}$  
> **Engineering Impact**: Calculates real-world pushing/clamping force for rejectors.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Air Pressure | Engineering Constant |
| A | Cylinder Area | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Particulate contamination (ISO 4406 Class 6/4/3) in supply air | 8 | Nozzle orifice clogging (diameter: 0.5 mm) causing output pressure lock at 0.85 bar | Dual-stage filtration (5 μm coalescing + 0.01 μm adsorption) with differential pressure monitoring |
| Ambient temperature cycling (-20°C to +60°C) exceeding elastomer glass transition | 8 | O-ring seal hardening (NBR material Tg: -40°C) causing 0.005 bar/min leakage | Fluorocarbon (FKM) seals with thermal compensation bellows (CTE: 17.3 μm/m·K) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Pilot Valve](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pilot-valve.md) `(Standalone System)`
- [Output Chamber](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/output-chamber.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Compressed Air Supply System**, **Pressure Regulator**, **Signal Conditioner**  
**Downstream Applications**: Automated Assembly Lines, Packaging Machinery, Process Control Systems  

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

### Q: What is the primary function of a pneumatic relay/amplifier in machinery?
**A**: A pneumatic relay/amplifier boosts low-pressure control signals to higher-pressure outputs, enabling precise control of actuators and valves in industrial automation systems.

### Q: What materials are used in this pneumatic relay/amplifier and why?
**A**: Stainless steel and aluminum alloy provide corrosion resistance and durability, brass ensures reliable connections, and Buna-N rubber seals offer flexibility and chemical resistance in harsh environments.

### Q: How does the adjustment spring affect performance in a pneumatic amplifier?
**A**: The adjustment spring allows calibration of output pressure ranges, ensuring accurate signal amplification and maintaining consistent system response across varying input conditions.

## 6. Manufacturing Compliance
- ISO 8573-1:2010 (COMPRESSED AIR QUALITY CLASSES)
- ANSI/ISA-7.0.01-1996 (QUALITY STANDARD FOR INSTRUMENT AIR)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Pneumatic Relay / Amplifier](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pneumatic-relay-amplifier)**

### 🌐 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**: PNEUMATIC_RELAY_AMPLIFIER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 7dc599a6
