SIEMENS QRA and QRI flame detectors cover ultraviolet and infrared sensing choices for burner safeguard systems. The range keeps compact QRA2 and QRA4.U UV detectors, QRA10.C heavy-duty UV detectors, and QRI infrared detectors together so model, sensitivity, cable position, accessories, and article numbers can be compared in one place.
| Product family | Model | Article No. | Sensitivity | Flange and clamp | Terminal cover | Accessories | Weight (g) |
|---|---|---|---|---|---|---|---|
| SIEMENS-QRA2 Series | QRA2 | 241 20 060 | Normal | Without | Black | 46 | |
| QRA2M | 241 20 061 | High | Green | ||||
| SIEMENS QRA4.U Series | QRA4.U | 241 20 066 | Normal | Without | 180 | ||
| QRA4M.U | 241 20 097 | High | |||||
| SIEMENS-QRA10.C Series | QRA10.C | 241 20 062 | Normal | / | / | 750 | |
| QRA10M.C | 241 20 093 | High | / | / |
| Product family | Model | Article No. | Illumination | Cable length (L) | Cable end | Weight (g) |
|---|---|---|---|---|---|---|
| SIEMENS QRI Series | QRI2A2.B180B | 241 20 092 | Frontal | 180 cm | Stripped | 175 |
| QRI2B2.B180B | 241 20 096 | Lateral |
For the QRA2 family, flange and clamp items are optional features. For QRA4.U and QRI models, accessories are optional features and should be selected according to the installation layout.
SIEMENS-QRA2 Series
SIEMENS QRA4.U Series
SIEMENS QRI Series
SIEMENS-QRA10.C Series
