SIEMENS Detectors and Sensors
Highly specialized flame detectors for any type of processTo ensure perfect process control, we have focussed for many years on the development of highly sensitive flame detectors.
For the supervision of yellow-burning oil flames, RAR silicon photocell detec- tors and QRB photo diode sensors are available.
For small- and medium-capacity blue- flame oil and gas burners, the QRC detector with UV diode is used.
The range of flame detectors also includes QRA detectors with UV cell, highly sensitive QRI infrared detectors, plus the ionization current principle for intermittent or continuous operation.
Sensor for combustion optimization
The range of detectors and sensors is rounded off by the QGO, an O2 sensor used for determining the residual oxygen content in flue gases.
SIEMENS QRC1 Flame Detector (UV Diode)
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Product Details:| Minimum Order Quantity | 1 Unit |
| Color | Black |
| Model Name/Number | QRC1 |
| Type | Automatic |
| Brand | Siemens |
| Power | 0.35 VA |
| Sensor Type | UV Diode |
| Voltage | AC 230 V -15/+10% |
| Degree Of Protection | IP40 |
| IP Rating | 40 |
| Length | Max. 1 m |
| I Deal In | New Only |
Blue-flame detectors for the supervision of blue- or yellow-burning oil or gas flames. Blue-flame detectors are used primarily in connection with burner controls for small-capacity burners in intermittent operation.
The QRC1... is a compact UV-sensitive blue-flame detector with an integrated preamplifier. It is designed for frontal and lateral (90°) illumination.
QRC1... is suited for use with following burner controls and with photoresistive detectors QRB1... - in terms of plug-in facility:
- LAL1... .................................................... see Data Sheet N7153
- LGB3... ................................................... see Data Sheet N7435
- LME23... ................................................. see Data Sheet N7101
- LMO14..., LMO24..., LMO44... ............... see Data Sheet N7130
- LMO54.................................................... see Data Sheet N7137
- LMV26... ................................................ see Data Sheet N7547
- LMV27... ................................................ see Data Sheet N7541
- LMV36... ................................................. see Data Sheet N7544
- LMV37... ................................................. see Data Sheet N7546
- LOA2... (except LOA25...), LOA3........... see Data Sheet N7118
The spectral sensitivity of the QRC1... is a maximum of approximately 300 nm so that it optimally covers the range of UV radiation of blue-burning oil or gas flames.
Since the QRC1... also detects UV fractions of the radiation spectrum of other luminous sources (from boiler house illumination or sunlight etc.), the standard regulations for extraneous light still apply.
The QRC1... must not detect UV radiation from ignition sparks, as otherwise lockout occurs during the prepurge time, due to extraneous light
SIEMENS QRA2 UV Cell (Flame Detector)
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Product Details:| Minimum Order Quantity | 1 Unit |
| Color | Golden |
| Model Name/Number | QRA2 |
| Type | Automatic |
| Brand | Siemens |
| Material | Plastic |
| Sensor Type | UV Cell |
| IP Rating | 40 |
| Protection | IP40 |
| I Deal In | New Only |
The flame detectors are designed for use with our burner controls, for the super- vision of gas and oil flames.
The flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving.
Type reference | For use with burner control type | Operating mode |
QRA2..., QRA10... | LGB2... / LGB4... with AGQ1... LFL... LMG... with AGQ2... | Intermittent |
Plastic housing, metalized to prevent static charging caused by the air flow from the fan. For direct mounting on the burner. The detectors can be supplied with or without securing flange and clamp
SIEMENS RAR Photocell (Flame Detector)
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Product Details:| Minimum Order Quantity | 1 Unit |
| Color | Black |
| Model Name/Number | RAR7/9 |
| Type | Photocell |
| Brand | SIEMENS |
| Material | Plastic |
| Usage/Application | Flame Detector |
| Sensor Type | Photocell |
| Degree Of Protection | IP40 |
| IP Rating | 40 |
| I Deal In | New Only |
The photocell detectors are designed for use with burner controls, for the super- vision of yellow-flame oil flames.
They are used especially in connection with burner controls for the control and supervision of large-capacity burners.
The RAR... flame detectors are used for the supervision of yellow-burning oil flames.
They are designed for use with the following types of burner controls: LAL..., LAE1..., LOK16... and LAE10...
Type reference | Length of detector cable | Flange and clamp | Photocell made of |
RAR7 | Upto 20m | Without | Selenium |
RAR7(1) | Up to 20 m | With | Selenium |
RAR8 | Up to 100 m | Without | Selenium |
RAR8(1) | Up to 100 m | With | Selenium |
RAR9 | Up to max. 100 m | Without | Silicon |
RAR9(1) | Up to max. 100 m | With | Silicon |
SIEMENS QRA10 UV sensor (Flame Detector)
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Product Details:| Minimum Order Quantity | 1 Unit |
| Color | Silver |
| Model Name/Number | QRA10C |
| Type | Automatic |
| Brand | Siemens |
| Sensor Type | UV Cell |
| Degree Of Protection | IP54 |
| IP Rating | 54 |
| Mounting | Optional |
| I Deal In | New Only |
The flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving.
Die-cast aluminium housing with a 1 in. mounting coupling (D) and a connection facility for cooling air. The housing of this detector has a bayonet fitting which allows it to be secured either directly to the mounting coupling or to the glass holder AGG06. The mounting coupling can be screwed to a viewing tube or to the ball head AGG07. The Pg cable gland can be removed and replaced, if some other detector cable shall be used.Type reference | For use with burner control type | Operating mode |
QRA2..., QRA10... | LGB2... / LGB4... with AGQ1... LFL... LMG... with AGQ2... | Intermittent |
SIEMENS QRA4 UV Cell (Flame Detector)
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Product Details:| Minimum Order Quantity | 1 Unit |
| Model Name/Number | QRA4 |
| Type | Automatic |
| Brand | Siemens |
| Material | Metal |
| Sensor Type | UV Cell |
| Degree Of Protection | IP54 |
| IP Rating | 54 |
| I Deal In | New Only |
UV flame detector for use with burner controls from Siemens for the supervision of gas or oil flames.
The flame detector is used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving in intermittent operation.
SIEMENS QRI Infrared Flame detector (Flame Detector)
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Product Details:| Minimum Order Quantity | 1 Unit |
| Voltage | 220V |
| Model Name/Number | QRI |
| Brand | SIEMENS |
| Type | Infrared Flame detector |
| Usage/Application | Industrial |
| Degree Of Protection | IP54 |
| IP Rating | IP54 |
| Sensor Type | IR Flicker |
| Color | Black |
| Material | Plastic |
| I Deal In | New Only |
Infrared flame detectors for use with Siemens burner controls, for the supervi- sion of gas, oil and other flames that emit infrared light.
The QRI... are suited for burners of any capacity, either in continuous or intermit- tent operation.
- Detector with infrared-sensitive flame detecting element
- Integrated flame signal amplifier
- Designed for frontal and lateral (90°) illumination
- Suited for use with burner controls type LMV5...
- Secured to the burner with flange and clamp
The spectral sensitivity of the QRI... is a maximum of about 2 μm covering infrared radiation emitted by gas, oil, and coal flames as well as other sources of infrared light. Owing to electronic self-supervision of the flame signal, the QRI... can be used in con- nection with suitable burner controls designed for burners in continuous or intermittent operation.
The sensitivity of the QRI... is such that it must be fitted behind the burner’s baffle plate.
SIEMENS QRB1 Photocell (Flame Detectors)
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Product Details:| Minimum Order Quantity | 1 Unit |
| Model Name/Number | QRB1/3 |
| Brand | Siemens |
| Sensor Type | Photo resistor |
| Sensing Method | senses only yellow flame |
| I Deal In | New Only |
Photo resistive detectors for use with Siemens burner controls, for the supervision of oil flames in the visible light spectrum.
The QRB... are used primarily in connection with oil burner controls in intermittent operation.
Photo resistive detectors for use with Siemens burner controls, for the supervision of oil flames in the visible light spectrum.
The QRB... are used primarily in connection with oil burner controls in intermittent operation.
General - Compact photo resistive flame detector with infused 2-wire thermoplastic cable. The detector is available with normal sensitivity, high sensitivity, or selected higher sensitivity, with or without flange and clamp or soft plastic plug (refer to «Type summary»).
QRB1...A - Flame detector without soft plastic plug.
This type of detector is fitted with the help of a flange.A guide groove in the securing flange and a cam on the detector clamp ensure vibration-free mounting and make certain that the photo resistive flame detector is always correctly sited towards the flame.
QRB1...B - Flame detector with soft plastic plug.
For mounting this type of detector on the burner, all that is required is a hole with a lateral groove (refer to «Dimensions»).The sealing and securing ribs of the soft plastic plug hold the detector firmly in the hole. The guide spring guarantees correct alignment of the photo resistive flame detector with the flame.
QRB3... - The detector is supplied with a metal protective tube having an external diameter of 17 mm.This type of detector is always secured with a flange and a clamp
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