Siemens Photo Resistive Flame Detectors QRB1 Series
Siemens QRB1 Series Photo Resistive Flame Detectors are designed to monitor yellow-burning oil flames in the visible light spectrum. Compatible with Siemens LAL, LME7, LMO, LMV, and LOA burner controls, they are suitable for intermittent-operation oil burners in industrial boilers and heating systems. Multiple sensitivity levels and mounting configurations are available.
Product Details
Siemens Photo Resistive Flame Detectors QRB1 Series
Siemens QRB1 Series Photo Resistive Flame Detectors
Siemens QRB1 Series Photo Resistive Flame Detectors are designed for monitoring yellow-burning oil flames within the visible light spectrum. They use a photoresistive sensing element to detect flame radiation and provide a flame signal to the associated burner control.
The QRB1 Series is primarily intended for oil burners operating intermittently. These detectors support frontal or lateral illumination at 90 degrees, making them suitable for industrial boilers, oil-fired burners, and heating equipment.
Key Features
- Designed for yellow-burning oil flame supervision
- Photoresistive sensing technology
- Maximum spectral sensitivity of approximately 600 nm
- Supports frontal and 90-degree lateral illumination
- Available in different sensitivity levels
- Flange-and-clamp or soft plastic plug mounting options
- Compact design with an integrated two-core cable
- IP40 degree of protection
Compatible Siemens Burner Controls
The QRB1 Series is designed for use with the following Siemens burner control families:
- Siemens LAL Series
- Siemens LME7 Series
- Siemens LMO Series
- Siemens LMV Series
- Siemens LOA Series
Applications
- Oil Burner Systems
- Industrial Boiler Systems
- Industrial Heating Equipment
- Intermittent-Operation Oil Combustion Systems
Selection and Installation
When selecting a Siemens QRB1 flame detector, verify the complete model number, sensitivity, cable length, termination type, mounting accessories, and compatibility with the installed burner control.
Important: External light sources, including sunlight and boiler room lighting, may affect flame detection. Proper installation and commissioning checks must be performed by qualified personnel according to the applicable burner control documentation.
Technical Specifications
Siemens QRB1 Series Technical Specifications
| Brand | Siemens |
|---|---|
| Series | QRB1 Series |
| Product Type | Photo Resistive Flame Detector |
| Sensing Principle | Photo Resistor |
| Flame Type | Yellow-Burning Oil Flames |
| Detection Spectrum | Visible Light Spectrum |
| Maximum Spectral Sensitivity | Approximately 600 nm |
| Operating Application | Intermittent Operation |
| Detection Orientation | Frontal or Lateral (90°) |
| Sensitivity Options | Normal / High / Selected High |
| Housing Colors |
Normal: Black High: Red Selected High: Blue |
| Degree of Protection | IP40 |
| Safety Class | Class II |
| Detector Cable |
Stranded Copper Wire, 2 x 0.75 mm² PVC Jacket, 5.2 mm Diameter |
| Cable Length | Depending on Model |
| Operating Temperature | -20 to +60°C |
| Relative Humidity | Below 95% RH |
| Installation Altitude | Maximum 2,000 m Above Sea Level |
| Mounting Position | Optional |
| Weight | Approx. 20–35 g, Depending on Model |
| Mounting Configuration |
QRB1...A: Flange and Clamp QRB1...B: Soft Plastic Plug |
| Compatible Burner Controls | LAL, LME7, LMO, LMV, LOA |
Note: Sensitivity, cable length, termination, and mounting accessories vary by model. Please verify the exact specifications before ordering.
Dimensions
Documents & Downloads
Frequently Asked Questions
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