11B UTI
February 13, 2025RFN 100 / ETS 107 UTI METERS SENSOR HONEYWELL/ENRAF TANKSYSTEM
February 13, 2025The RAR9 SIEMENS (Model: RAR9, BPZ:RAR9) is a high-sensitivity selenium photocell flame detector manufactured by Siemens Building Technologies. Specially designed for supervising yellow-burning oil flames, the RAR9 SIEMENS detects optical radiation in the visible spectrum emitted by combustion, converting light energy directly into a microampere current signal for burner control evaluation.
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RAR9 SIEMENS Selenium Photocell Flame Detector
The RAR9 SIEMENS (Model: RAR9, BPZ:RAR9) is a high-sensitivity selenium photocell flame detector manufactured by Siemens Building Technologies. Specially designed for supervising yellow-burning oil flames, the RAR9 SIEMENS detects optical radiation in the visible spectrum emitted by combustion, converting light energy directly into a microampere current signal for burner control evaluation.
Interfacing directly with Siemens oil burner controllers (such as the LAL…, LME…, and LAE… series), the RAR9 SIEMENS provides reliable flame monitoring for commercial boilers, air heaters, and industrial burner skids. Encapsulated in a protective housing with a plug-in terminal base, it offers long-term resistance to ambient dust, soot deposits, and boiler room heat.
Key Features of the RAR9 SIEMENS
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High Visible Spectrum Sensitivity: Optimally tuned for detecting yellow oil flames in atomizing oil burners and oil-fired heating plants.
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Direct Microampere Signal Output: Converts light radiation into a direct photocurrent output evaluated by Siemens burner control units.
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Plug-In Base Housing: Features a compact protective enclosure designed for quick mounting into burner tube flanges or sight glass ports.
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Broad Siemens Controller Support: Compatible with Siemens LAL…, LME…, LOK…, and LAE… series burner sequence controllers.
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Dust & Heat Resistant Enclosure: Sealed construction protects delicate selenium photocell elements from soot accumulation and vibration.
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Easy Maintenance Access: Allows simple removal and lens cleaning during routine boiler service intervals without disconnecting main wiring terminals.
Primary Applications
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Commercial Oil Burners: Supervising yellow oil flames in light and heavy oil pressure-atomizing burners
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Industrial Heating Plants: Flame monitoring on hot water boilers, steam generators, and warm air heaters
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Marine Auxiliary Boilers: Reliable flame detection on shipboard oil-fired auxiliary boilers and incinerators
Technical Specifications
| Parameter Category | Specification Details |
| Manufacturer / Brand | Siemens Building Technologies |
| Part Number / Keyword | RAR9 SIEMENS (RAR9 / BPZ:RAR9) |
| Device Type | Selenium Photocell Flame Detector |
| Sensing Technology | Selenium Photoelectric Cell (Visible Spectrum) |
| Spectral Range | Approx. 300 nm to 800 nm (Peak sensitivity in yellow spectrum) |
| Compatible Controller Series | Siemens LAL…, LME…, LOK…, LAE… |
| Detector Cable Length | Standard integrated lead or screw terminal socket |
| Enclosure Protection | IP40 / Heat-resistant polymer housing |
| Mounting Type | Flange or clamp mounting on burner tube |
| Operating Temperature | -20°C to +60°C (-4°F to 140°F) |
| Dimensions (Diameter x Length) | 22 x 80 mm |
| Weight | Approx. 0.09 kg |
Package Contents
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1 × RAR9 SIEMENS Selenium Photocell Flame Detector Assembly
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Mounting Flange & Installation Datasheet

