Industry-Verified Manufacturing Data (2026)

Flame Sensor

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Flame Sensor used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Flame Sensor is characterized by the integration of Sensor Element and Housing. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A safety device that detects the presence or absence of a flame in a burner system.

Product Specifications

Technical details and manufacturing context for Flame Sensor

Definition
A critical safety component within a Burner Assembly that continuously monitors flame presence to ensure safe operation. It detects the flame's optical, thermal, or electrical properties and sends a signal to the control system to maintain fuel flow when flame is present or to initiate safety shutdown if flame failure occurs.
Working Principle
Typically operates by detecting ultraviolet (UV) radiation, infrared (IR) radiation, or flame rectification (ionization current) generated by the flame. The sensor converts this detected signal into an electrical output that is interpreted by the burner control system.
Common Materials
Stainless Steel, Ceramic, Quartz Glass
Technical Parameters
  • Mounting thread size or flange dimensions for installation into the burner assembly (mm) Customizable
Components / BOM
  • Sensor Element
    Detects flame radiation or ionization current
    Material: Quartz/UV Tube or Metal Rod
  • Housing
    Protects internal components from heat and environmental conditions
    Material: Stainless Steel
  • Electrical Connector
    Provides interface for signal transmission to control system
    Material: Brass/Stainless Steel
Engineering Reasoning
0.5-5.0 μA (flame current), 0.1-10.0 lux (UV detection), -40°C to 85°C (ambient temperature)
Flame current <0.3 μA (loss of detection), UV sensor saturation >15 lux (false positive), electrode contamination >50 μg/cm² (insulation breakdown)
Design Rationale: Ionization quenching at flame currents below 0.3 μA due to insufficient combustion ions, UV photocathode fatigue from cumulative exposure >10⁹ photons/cm², dielectric breakdown at electrode contamination exceeding 50 μg/cm² creating leakage paths
Risk Mitigation (FMEA)
Trigger Electrode contamination accumulation at 3.2 μg/cm²/hour from combustion byproducts
Mode: Flame rectification failure with leakage current exceeding 0.1 μA
Strategy: Self-cleaning electrode design with 50 Hz AC superimposed on DC bias
Trigger UV sensor window quartz devitrification at temperatures >300°C for >1000 hours
Mode: UV transmittance reduction below 60% at 185-260 nm wavelengths
Strategy: Synthetic sapphire window with anti-reflective coating and active thermoelectric cooling

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Flame Sensor.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 1 bar (atmospheric to slight positive pressure)
other spec: UV/IR detection range: 185-260 nm (UV), 700-1100 nm (IR); Response time: <3 seconds; Power: 24V DC ±10%
temperature: -40°C to 85°C (operating), up to 120°C (short-term exposure)
Media Compatibility
✓ Natural gas combustion systems ✓ Propane burner applications ✓ Oil-fired heating systems
Unsuitable: High particulate environments (e.g., coal dust, heavy soot)
Sizing Data Required
  • Burner flame size and shape
  • Required detection distance (sensor-to-flame)
  • Ambient light interference level

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Lens contamination
Cause: Accumulation of soot, dust, or oil deposits on the optical surface, blocking or scattering the flame signal, often due to poor combustion, inadequate air filtration, or proximity to dirty environments.
Sensor drift or calibration loss
Cause: Degradation of internal components (e.g., photocells, UV tubes) over time from thermal cycling, prolonged exposure to high temperatures, or aging electronics, leading to inaccurate flame detection thresholds.
Maintenance Indicators
  • Intermittent or false flame detection (e.g., burner cycling on/off unexpectedly, alarms without flame loss)
  • Visible buildup or discoloration on the sensor lens or housing, indicating contamination or overheating
Engineering Tips
  • Implement regular lens cleaning with appropriate solvents (e.g., isopropyl alcohol) and soft materials to prevent scratching, combined with inspection during routine maintenance shutdowns.
  • Ensure proper sensor alignment and mounting to avoid direct exposure to excessive heat or vibration, and verify calibration annually using manufacturer-recommended test procedures.

Compliance & Manufacturing Standards

Reference Standards
ISO 23550:2011 (Safety and control devices for gas burners and gas-burning appliances) ANSI Z21.20 (Automatic gas ignition systems and components) EN 298:2012 (Automatic burner control systems for burners and appliances burning gaseous or liquid fuels)
Manufacturing Precision
  • Optical alignment: +/- 0.5° angular deviation
  • Response time: +/- 10% of specified value (typically 2-4 seconds)
Quality Inspection
  • UV/IR spectral response verification test
  • Environmental durability test (temperature cycling, vibration, humidity)

Factories Producing Flame Sensor

Verified manufacturers with capability to produce this product in China

✓ 98% Supplier Capability Match Found

P Procurement Specialist from Singapore Jan 27, 2026
★★★★★
"The Flame Sensor we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
T Technical Director from Germany Jan 24, 2026
★★★★★
"Found 43+ suppliers for Flame Sensor on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
P Project Engineer from Brazil Jan 21, 2026
★★★★★
"The technical documentation for this Flame Sensor is very thorough, especially regarding technical reliability."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

12 sourcing managers are analyzing this specification now. Last inquiry for Flame Sensor from UAE (38m ago).

Supply Chain Compatible Machinery & Devices

Hydraulic Press

Industrial machine using hydraulic pressure to compress, form, or assemble materials

Explore Specs →
Heavy-Duty CNC Plasma Cutting Machine

Industrial machine for precision metal cutting using plasma arc technology

Explore Specs →
Automated Assembly Line System

Integrated production system for sequential component assembly operations

Explore Specs →
Automated Powder Coating System

Integrated industrial system for applying dry powder coatings to metal substrates.

Explore Specs →

Frequently Asked Questions

What materials are used in this flame sensor for durability?

This flame sensor is constructed with stainless steel for corrosion resistance, ceramic for high-temperature stability, and quartz glass for optical clarity and thermal shock resistance, ensuring reliable performance in harsh industrial environments.

How does this flame sensor enhance safety in machinery and equipment manufacturing?

The flame sensor continuously monitors burner systems to detect the presence or absence of a flame, automatically triggering safety shutdowns if a flame failure occurs. This prevents unburned fuel accumulation, reducing fire and explosion risks in industrial equipment.

What are the key components in the flame sensor's bill of materials (BOM)?

The primary BOM components include an electrical connector for secure wiring, a durable housing that protects internal parts, and a sensitive sensor element that accurately detects flame characteristics, ensuring consistent operation and easy maintenance.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Get Quote for Flame Sensor

Request technical pricing, lead times, or customized specifications for Flame Sensor directly from verified manufacturing units.

Your business information is encrypted and only shared with verified Flame Sensor suppliers.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Thank you! Your message has been sent. We'll respond within 1–3 business days.

Need to Manufacture Flame Sensor?

Connect with verified factories specializing in this product category

Add Your Factory Contact Us
Previous Product
Flame Scanner / Detector
Next Product
Flame Sensor/Scanner