SIEMENS QRI2B2.B180B1 Infrared Flame Detector | Replacement, Equivalent & Selection Guide
The SIEMENS QRI2B2.B180B1 is a high-reliability infrared flame detector designed for use with SIEMENS burner control units. It detects the infrared radiation emitted by oil and gas flames, providing a fast and accurate flame signal to the burner management system. This page covers full technical specifications, compatible replacement models, cross-reference equivalents, and a structured selection guide to help engineers and procurement teams make the right sourcing decision.
Technical Specifications
- Manufacturer: SIEMENS (Building Technologies / Combustion Controls)
- Part Number: QRI2B2.B180B1
- Type: Infrared (IR) Flame Detector / Flame Sensor
- Detection Principle: Infrared radiation sensing
- Applicable Fuels: Oil, Gas, Dual-fuel burners
- Spectral Range: Infrared (approx. 0.85 – 1.05 µm)
- Supply Voltage: Compatible with SIEMENS LME/LMO/LMG/LAL burner control series
- Operating Temperature: –20 °C to +60 °C
- Protection Class: IP40 (check installation environment)
- Connection: Plug-in connector, compatible with QRZ series sockets
- Response Time: < 1 second (flame on); < 1 second (flame off)
- Weight: Approx. 500 g (with housing)
- Standards: EN 230, EN 298 (applicable burner control standards)
Compatible Replacement & Equivalent Models
The following models are commonly used as direct or functional replacements for the QRI2B2.B180B1. Always verify electrical and mechanical compatibility before substitution.
- SIEMENS QRI2A2.B180B1 – Same series, slightly different sensitivity range; verify with burner OEM
- SIEMENS QRI2B2.B180 – Earlier revision; functionally equivalent in most LME/LMO applications
- SIEMENS QRI3B2.B180B1 – Upgraded version with extended spectral range; drop-in replacement in most cases
- SIEMENS QRB1B.990B270A1 – Phototransistor type; suitable for gas-only applications as alternative
- Honeywell C7027A1049 – Cross-brand IR equivalent; verify control unit compatibility
- Brahma IR-type detectors – OEM-equivalent for certain European burner brands
Note: Cross-brand replacements require verification of signal output type (AC/DC), connector pinout, and burner control unit approval list.
Why Choose the Original Model
- OEM Certification: QRI2B2.B180B1 is factory-approved for SIEMENS LME, LMO, LMG, and LAL burner control families — no re-certification required.
- Proven Reliability: Designed and tested to SIEMENS combustion safety standards with documented MTBF data.
- Regulatory Compliance: Meets EN 230 / EN 298 requirements out of the box — critical for CE-marked installations.
- Plug-and-Play: Direct connector compatibility with QRZ sockets eliminates field wiring risk.
- Warranty & Traceability: Genuine SIEMENS parts carry full manufacturer warranty and batch traceability for audits.
Typical Applications
- Industrial oil and gas burners (boilers, furnaces, kilns)
- Commercial heating systems with SIEMENS burner controls
- District heating plants and CHP (combined heat and power) units
- Marine and offshore heating systems
- Process heating in chemical, pharmaceutical, and food industries
- OEM burner assemblies requiring SIEMENS-approved flame detection
System Compatibility
The QRI2B2.B180B1 is designed for use with the following SIEMENS burner control families:
- LME Series: LME11, LME21, LME22, LME39, LME41, LME71, LME73
- LMO Series: LMO14, LMO24, LMO44, LMO54, LMO64
- LMG Series: LMG21, LMG22
- LAL Series: LAL1, LAL2, LAL3
- LFL Series: LFL1 (verify revision compatibility)
Always consult the burner control unit’s technical datasheet to confirm approved detector list before installation.
Selection Guide
Use the following criteria to determine whether QRI2B2.B180B1 is the right detector for your application:
- Fuel type: Oil or gas? → QRI2B2 series is suitable for both. For gas-only, QRB phototransistor types may also apply.
- Burner control unit: Confirm the control unit’s approved detector list (found in the LME/LMO datasheet appendix).
- Ambient temperature: Standard range –20 to +60 °C covers most industrial environments. High-temperature variants available on request.
- Flame intensity: B180B1 suffix indicates standard sensitivity. For low-flame or pilot-flame detection, consult SIEMENS for sensitivity-adjusted variants.
- Connector type: Verify QRZ socket availability on-site. Adapter kits available for legacy installations.
- Regulatory requirement: EN 298 compliance mandatory? → Use original SIEMENS part for guaranteed certification path.
Quality Assurance & Sourcing
- All units supplied by Konmask.com are sourced from authorized SIEMENS distributors or verified surplus channels with full traceability documentation.
- Each unit undergoes incoming inspection: visual check, label verification, and packaging integrity assessment.
- Batch certificates and country-of-origin documentation available upon request.
- Anti-counterfeit verification available for critical procurement — contact our team for details.
- Lead time: In-stock units ship within 1–3 business days. Special orders: 5–15 business days depending on region.
How to Order
- Part Number: QRI2B2.B180B1
- Manufacturer: SIEMENS
- Quantity: Single unit or bulk order (MOQ 1)
- Payment: T/T, PayPal, credit card, and trade finance options available
- Shipping: DHL / FedEx / UPS express; sea freight for bulk orders
- Documentation: Commercial invoice, packing list, COO, and test report available
- 📧 Email: support@konmask.com
- 📞 Phone/WhatsApp: +0086 19859288691
- 🌐 Website: https://Konmask.com
Replacement & Compatibility FAQ
Q: Can I use QRI2B2.B180B1 to replace QRI2A2.B180B1?
A: In most cases yes, but verify the burner control unit’s approved detector list. The B2 suffix indicates a different sensitivity class than A2.
Q: Is QRI2B2.B180B1 compatible with non-SIEMENS burner controls?
A: Possibly, if the control unit accepts a standard IR detector signal. Consult the third-party control unit datasheet and confirm signal output compatibility.
Q: What is the difference between QRI and QRB detectors?
A: QRI uses infrared sensing (suitable for oil and gas flames); QRB uses phototransistor/UV sensing (typically gas-only). Choose based on fuel type and burner control approval.
Q: How do I verify authenticity of the part?
A: Genuine SIEMENS parts have a holographic label, SIEMENS part number engraving, and traceable batch codes. Contact us for anti-counterfeit verification documentation.
Q: What is the typical service life?
A: SIEMENS recommends replacement every 5–10 years or per the burner manufacturer’s maintenance schedule, whichever comes first.
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