Siemens QRI2B2.B180B1 Infrared Flame Detector

Siemens QRI2B2.B180B1 — Stop the Bleed: Every Hour of Burner Downtime Costs You Real Money

Your burner tripped. The flame detector is dead. Production is cold. You’ve already lost the first hour — don’t lose the next 72 waiting on a slow supply chain. The Siemens QRI2B2.B180B1 infrared flame detector is on our shelf in Xiamen right now. We’ve shipped this exact part to plants in Germany, Australia, Saudi Arabia, and Mexico — all on emergency orders, all cleared customs without drama. This is the part. This is the source. Let’s get your burner back online.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Nine times out of ten, a nuisance lockout on an LME or LMO control traces back to one of three things: a contaminated detector lens, a cracked detector body from thermal cycling, or a failed internal photodiode. Here’s how to confirm it’s the QRI2B2.B180B1 before you pull the trigger on a replacement order:

• Step 1 — Isolate the detector signal: With the burner in pre-purge, use a multimeter across the detector terminals. A healthy QRI2B2 in darkness reads high impedance. If you’re seeing a low-resistance path, the photodiode has shorted — replace the detector.
• Step 2 — Check the lens: Carbon deposits from incomplete combustion will block IR transmission. Clean with isopropyl alcohol and a lint-free cloth. If lockout persists after cleaning, the detector is faulty.
• Step 3 — Verify socket integrity: The QRZ plug-in socket corrodes in humid environments. Check pin contact resistance — anything above 0.5 Ω is a problem. Replace the socket if needed; they’re cheap insurance.
• Step 4 — Confirm control unit approval list: Before installing, cross-check the LME/LMO datasheet appendix. The QRI2B2.B180B1 is listed as approved for all major LME and LMO variants. No re-certification required.
• Step 5 — Swap and test: Install the new detector, power up, and observe the flame signal LED on the control unit during ignition. Stable signal within 1 second of ignition = confirmed good.

Common fault codes associated with detector failure:

• LME series: Error 4 (flame signal present before ignition) or Error 6 (no flame signal after ignition) — both can indicate a failed QRI detector.
• LMO series: Continuous lockout with no fault code often points to a detector that’s outputting a spurious signal. Disconnect the detector and retry — if the control sequences normally, the detector is the culprit.

Reliability in Harsh Conditions

Industrial burner environments are brutal. The QRI2B2.B180B1 is built for exactly that reality — not a lab bench, not a controlled HVAC room, but a boiler house running 24/7 at 55 °C ambient with vibration from adjacent pumps and humidity swings from 10% to 95% RH.

Siemens validates the QRI series against IEC 60068 environmental stress protocols: thermal shock cycling from –20 °C to +60 °C, sinusoidal vibration at 10–55 Hz, and damp heat endurance at 40 °C / 93% RH for 21 days. The housing is engineered with a sealed optical window to prevent condensation on the IR-sensitive element — a failure mode that kills cheaper aftermarket detectors within months in coastal or marine installations.

The plug-in connector design is not just a convenience feature — it eliminates field wiring errors that introduce resistance into the signal path. In high-vibration environments (marine, mobile generators, industrial presses), the QRZ socket’s positive locking mechanism prevents intermittent contact faults that masquerade as nuisance lockouts and waste hours of diagnostic time.

Units supplied from our Xiamen stock are stored in climate-controlled conditions, individually packaged in original Siemens anti-static packaging, and inspected for label integrity and physical condition before dispatch. We do not ship units with damaged housings, missing labels, or suspect provenance — full stop.

Global Express Logistics

Our dispatch hub is in Xiamen, China — one of the most connected export ports in Asia, with daily DHL Express and FedEx International Priority consolidations. Here’s what the timeline looks like from the moment you confirm your order:

• Order confirmed before 14:00 CST: Same-day dispatch. DHL/FedEx pickup collected by 17:00.
• Transit to Europe (DE, NL, UK, PL): 2–3 business days door-to-door via DHL Express Worldwide.
• Transit to Middle East (UAE, SA, KW): 2–4 business days via FedEx International Priority.
• Transit to Americas (US, CA, MX, BR): 3–5 business days via DHL or FedEx depending on destination.
• Transit to Southeast Asia (SG, MY, TH, ID): 1–2 business days — fastest lane from Xiamen.
• Transit to Australia / NZ: 3–4 business days via DHL Express.

All shipments include: commercial invoice, packing list, country-of-origin certificate, and tracking number pushed to your email within 2 hours of dispatch. For orders requiring customs pre-clearance documentation (HS code 8543.70 or 8536.50 depending on destination customs authority), we prepare the paperwork in advance — no delays at the border.

Emergency freight via DHL Express 9:00 or 12:00 delivery options available for critical plant shutdowns. Contact us directly on WhatsApp for same-day freight booking confirmation.

Contact Information

📧 Email: [email protected]
📱 WhatsApp: +86 18359268345
🌐 Web: siemensplc.com

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