Siemens QRC1 Series UV Blue-Flame Detectors
Product Description
Siemens QRC1 Series UV Blue-Flame Detectors
Siemens QRC1 Series comprises compact ultraviolet-sensitive flame detectors for supervising blue- and yellow-burning gas or oil flames. They transmit flame detection signals to compatible burner control units for safe combustion monitoring.
With an integrated signal preamplifier and model-dependent frontal or 90° lateral viewing, QRC1 detectors are intended primarily for small-capacity burners operating intermittently.
Key Features
- Detection of blue- and yellow-burning gas and oil flames
- Ultraviolet-sensitive diode sensing technology
- Built-in flame signal preamplifier
- Frontal or 90° lateral flame viewing configurations
- Normal, middle and high sensitivity options, depending on model
- Tolerates short flame signal interruptions of approximately 300 ms
- Compact black plastic housing with a protective viewing window
- Adjustable mounting plug for installation flexibility
Operating Principle
The QRC1 uses a specially designed UV-sensitive diode with a quartz-glass lens that focuses radiation from the flame onto the sensing element.
Peak spectral sensitivity is approximately 300 nm, making the detector suitable for ultraviolet radiation produced by blue-burning gas or oil flames.
An optical filter attenuates longer-wavelength radiation, while the integrated preamplifier raises the flame signal to the level required by the compatible burner control. The detector tolerates brief flame signal interruptions, helping maintain stable flame monitoring when the flame flickers.
Applications
- Oil burner flame supervision
- Gas burner flame supervision
- Small-capacity burners with intermittent operation
- Flame supervision with compatible burner controllers
Compatible Siemens Burner Controls
According to the specified Siemens technical information, QRC1 detectors may be used with compatible models in these burner control families:
- Siemens LAL1
- Siemens LGB3
- Siemens LME23 and LME73
- Siemens LMO14, LMO24, LMO44, LMO54 and LMO64
- Siemens LMV26, LMV27, LMV36 and LMV37
- Siemens LOA2 (excluding LOA25) and LOA3
Important: Confirm the exact QRC1 model, sensitivity, viewing direction, power requirements and burner control compatibility before installation. Installation, commissioning and maintenance must be carried out by qualified personnel.
Specifications
Siemens QRC1 Series UV Blue-Flame Detector Technical Specifications
| Manufacturer | Siemens |
|---|---|
| Product Series | QRC1 Series |
| Detector Type | Blue-Flame Detector |
| Sensing Technology | UV-Sensitive Diode |
| Applicable Flames | Blue / Yellow Oil & Gas Flames |
| Peak Spectral Sensitivity | Approximately 300 nm |
| Supply Voltage | AC 230 V (-15% / +10%) |
| Mains Frequency | 50 / 60 Hz ±6% |
| Power Consumption | 0.35 VA |
| Tolerated Flame Signal Interruption | Approximately 300 ms |
| Flame Viewing Direction | Frontal / 90° Lateral (model-dependent) |
| Sensitivity Grades | Normal / Middle / High (model-dependent) |
| Maximum Connecting Cable Length | 1 m |
| Maximum Auxiliary Cable Length | 20 m (with separate cable routing) |
| Detector Cable | 3 x 0.5 mm² Copper / PVC |
| Ingress Protection | IP40 |
| Electrical Safety Class | Class II |
| Operating Temperature | -20 to +60°C |
| Short-Duration Temperature Limit | Up to +75°C for a maximum of 1 minute |
| Storage Temperature | -20 to +60°C |
| Transport Temperature | -25 to +80°C |
| Relative Humidity | Less than 95% RH |
| Maximum Installation Elevation | 2,000 m above sea level |
| Mounting Orientation | Optional |
| Approximate Weight | 0.029 kg (including 350 mm cable) |
Available Siemens QRC1 Models
| Model | Sensitivity | Viewing Direction | Cable Length |
|---|---|---|---|
| QRC1A1.101C27 | Normal | Frontal | 350 mm |
| QRC1A1.103C27 | Normal | Frontal | 500 mm |
| QRC1A2.103C27 | Middle | Frontal | 500 mm |
| QRC1A2.104C27 | Middle | Frontal | 700 mm |
| QRC1A3.101C27 | High | Frontal | 350 mm |
| QRC1A3.103C27 | High | Frontal | 500 mm |
| QRC1C0.182C27 | Normal | Lateral | 270 mm |
| QRC1C2.103C27 | Middle | Lateral | 500 mm |
Note: These models represent selected QRC1 variants. Viewing window materials, cable arrangements, mounting accessories and electrical connections may vary. Check Siemens Datasheet CC1N7716en for the exact configuration.
Product Specifications
Siemens QRC1 Series UV Blue-Flame Detector Technical Specifications
| Manufacturer | Siemens |
|---|---|
| Product Series | QRC1 Series |
| Detector Type | Blue-Flame Detector |
| Sensing Technology | UV-Sensitive Diode |
| Applicable Flames | Blue / Yellow Oil & Gas Flames |
| Peak Spectral Sensitivity | Approximately 300 nm |
| Supply Voltage | AC 230 V (-15% / +10%) |
| Mains Frequency | 50 / 60 Hz ±6% |
| Power Consumption | 0.35 VA |
| Tolerated Flame Signal Interruption | Approximately 300 ms |
| Flame Viewing Direction | Frontal / 90° Lateral (model-dependent) |
| Sensitivity Grades | Normal / Middle / High (model-dependent) |
| Maximum Connecting Cable Length | 1 m |
| Maximum Auxiliary Cable Length | 20 m (with separate cable routing) |
| Detector Cable | 3 x 0.5 mm² Copper / PVC |
| Ingress Protection | IP40 |
| Electrical Safety Class | Class II |
| Operating Temperature | -20 to +60°C |
| Short-Duration Temperature Limit | Up to +75°C for a maximum of 1 minute |
| Storage Temperature | -20 to +60°C |
| Transport Temperature | -25 to +80°C |
| Relative Humidity | Less than 95% RH |
| Maximum Installation Elevation | 2,000 m above sea level |
| Mounting Orientation | Optional |
| Approximate Weight | 0.029 kg (including 350 mm cable) |
Available Siemens QRC1 Models
| Model | Sensitivity | Viewing Direction | Cable Length |
|---|---|---|---|
| QRC1A1.101C27 | Normal | Frontal | 350 mm |
| QRC1A1.103C27 | Normal | Frontal | 500 mm |
| QRC1A2.103C27 | Middle | Frontal | 500 mm |
| QRC1A2.104C27 | Middle | Frontal | 700 mm |
| QRC1A3.101C27 | High | Frontal | 350 mm |
| QRC1A3.103C27 | High | Frontal | 500 mm |
| QRC1C0.182C27 | Normal | Lateral | 270 mm |
| QRC1C2.103C27 | Middle | Lateral | 500 mm |
Note: These models represent selected QRC1 variants. Viewing window materials, cable arrangements, mounting accessories and electrical connections may vary. Check Siemens Datasheet CC1N7716en for the exact configuration.
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