Siemens Photo Resistive Flame Detectors QRB1 Series
Product Description
Siemens QRB1 Series Photoresistive Flame Detectors for Oil Burners
Siemens QRB1 Series photoresistive flame detectors are designed to supervise yellow-burning oil flames using radiation in the visible-light spectrum. A light-sensitive resistor responds to flame illumination, enabling the connected burner controller to evaluate flame presence.
Primarily intended for oil burners operating intermittently, QRB1 detectors can receive light from the front or at a 90-degree lateral angle. They are used in industrial boiler installations, oil-fired burner assemblies and heating equipment.
Key Features
- Designed for flame supervision of yellow-burning oil
- Photoresistive flame detection principle
- Peak spectral sensitivity of approximately 600 nm
- Frontal and 90-degree lateral flame illumination
- Normal, high and selected-high sensitivity variants
- Flange-and-clamp or flexible plastic plug mounting options
- Compact sensing assembly with an integrated two-core cable
- IP40 ingress protection
Compatible Siemens Burner Controls
The QRB1 family is intended for use with specified models from the following Siemens burner control families:
- Siemens LAL Series
- Siemens LME7 Series
- Siemens LMO Series
- Siemens LMV Series
- Siemens LOA Series
Industrial Applications
- Oil-fired burner systems
- Industrial boiler combustion equipment
- Industrial heating installations
- Intermittently operated oil combustion systems
Selection and Installation Guidelines
Before selecting a Siemens QRB1 detector, confirm its complete model designation, required sensitivity, connection cable length, termination arrangement, mounting hardware and compatibility with the installed burner control.
Important: External illumination, including sunlight and boiler room lighting, may influence flame detection. Correct positioning, installation and commissioning tests must be completed by qualified technicians in accordance with the applicable burner control documentation.
Specifications
Siemens QRB1 Series Photoresistive Flame Detector Technical Specifications
| Manufacturer | Siemens |
|---|---|
| Product Family | QRB1 Series |
| Detector Classification | Photoresistive Flame Detector |
| Sensing Technology | Photo Resistor |
| Applicable Flame | Yellow-Burning Oil Flames |
| Optical Detection Spectrum | Visible Light Spectrum |
| Peak Spectral Sensitivity | Approximately 600 nm |
| Operating Duty | Intermittent Operation |
| Flame Viewing Direction | Frontal or Lateral (90°) |
| Detector Sensitivity Options | Normal / High / Selected High |
| Housing Identification Colors | Normal: Black High: Red Selected High: Blue |
| Ingress Protection | IP40 |
| Electrical Safety Class | Class II |
| Integrated Detector Cable | Stranded Copper Wire, 2 x 0.75 mm² PVC Jacket, 5.2 mm Diameter |
| Connection Cable Length | Depending on Model |
| Ambient Operating Temperature | -20 to +60°C |
| Permissible Relative Humidity | Below 95% RH |
| Maximum Installation Elevation | 2,000 m Above Sea Level |
| Mounting Orientation | Optional |
| Approximate Weight | 20–35 g, Depending on Model |
| Mounting Configurations | QRB1...A: Flange and Clamp QRB1...B: Soft Plastic Plug |
| Compatible Siemens Burner Controls | LAL, LME7, LMO, LMV, LOA |
Technical Note: Sensitivity, cable length, electrical termination and mounting accessories depend on the exact detector version. Confirm the applicable specifications before ordering.
Product Specifications
Siemens QRB1 Series Photoresistive Flame Detector Technical Specifications
| Manufacturer | Siemens |
|---|---|
| Product Family | QRB1 Series |
| Detector Classification | Photoresistive Flame Detector |
| Sensing Technology | Photo Resistor |
| Applicable Flame | Yellow-Burning Oil Flames |
| Optical Detection Spectrum | Visible Light Spectrum |
| Peak Spectral Sensitivity | Approximately 600 nm |
| Operating Duty | Intermittent Operation |
| Flame Viewing Direction | Frontal or Lateral (90°) |
| Detector Sensitivity Options | Normal / High / Selected High |
| Housing Identification Colors | Normal: Black High: Red Selected High: Blue |
| Ingress Protection | IP40 |
| Electrical Safety Class | Class II |
| Integrated Detector Cable | Stranded Copper Wire, 2 x 0.75 mm² PVC Jacket, 5.2 mm Diameter |
| Connection Cable Length | Depending on Model |
| Ambient Operating Temperature | -20 to +60°C |
| Permissible Relative Humidity | Below 95% RH |
| Maximum Installation Elevation | 2,000 m Above Sea Level |
| Mounting Orientation | Optional |
| Approximate Weight | 20–35 g, Depending on Model |
| Mounting Configurations | QRB1...A: Flange and Clamp QRB1...B: Soft Plastic Plug |
| Compatible Siemens Burner Controls | LAL, LME7, LMO, LMV, LOA |
Technical Note: Sensitivity, cable length, electrical termination and mounting accessories depend on the exact detector version. Confirm the applicable specifications before ordering.
Company Information
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