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Designed for supervision of yellow-burning oil flames with Siemens burner controls.
Instructions to avoid injury, property damage, and environmental harm. Handle with care.
Ensuring compliance with safety regulations and proper cable routing for signal integrity.
Checking detector current, safety checks, and cleaning procedures for optimal performance.
Compact photoresistive flame detector with infused 2-wire thermoplastic cable.
Flame detector without soft plastic plug, fitted with a flange for vibration-free mounting.
Flame detector with soft plastic plug for mounting in a hole with a lateral groove.
Detector supplied with a metal protective tube, secured with flange and clamp.
Available accessories for QRB1... include small/large flanges and clamps.
Accessories for QRB3... include metal flange and clamp.
Details on degree of protection, mounting position, cable specifications, and weight.
Specifies storage, transport, and operation conditions including climatic and mechanical requirements.
Designed for supervision of yellow-burning oil flames with Siemens burner controls.
Instructions to avoid injury, property damage, and environmental harm. Handle with care.
Ensuring compliance with safety regulations and proper cable routing for signal integrity.
Checking detector current, safety checks, and cleaning procedures for optimal performance.
Compact photoresistive flame detector with infused 2-wire thermoplastic cable.
Flame detector without soft plastic plug, fitted with a flange for vibration-free mounting.
Flame detector with soft plastic plug for mounting in a hole with a lateral groove.
Detector supplied with a metal protective tube, secured with flange and clamp.
Available accessories for QRB1... include small/large flanges and clamps.
Accessories for QRB3... include metal flange and clamp.
Details on degree of protection, mounting position, cable specifications, and weight.
Specifies storage, transport, and operation conditions including climatic and mechanical requirements.
The Siemens QRB1... and QRB3... are photoresistive flame detectors designed for the supervision of oil flames in the visible light spectrum. They are primarily used in conjunction with Siemens burner controls such as LAL..., LOA..., LMO..., and LMV... in intermittent operation. These detectors are intended for OEMs who integrate them into their products.
The core function of these detectors is to monitor the light radiation emitted by yellow-burning oil flames within the visible light spectrum. The light-sensitive element within the detector is a photoresistor. In its dark state, this photoresistor exhibits a high electrical resistance, typically in the MΩ range. As the intensity of light striking the photoresistor increases, its electrical resistance decreases significantly, falling into the kΩ range. This change in resistance is then evaluated by the connected burner control to generate a flame signal, indicating the presence of a flame.
A key characteristic of the QRB... detectors is their maximum spectral sensitivity, which is approximately 600 nm. This sensitivity is specifically chosen to fully account for the maximum level of visible light radiation produced by yellow-burning oil flames. However, it's important to note that the QRB... detectors can also pick up parts of the radiation spectrum from other light sources, such as boiler room lighting or solar radiation. Therefore, standard safety regulations concerning extraneous light must always be observed to prevent false flame signals. Unlike RAR selenium photocell detectors, the QRB... can detect glowing firebrick in the combustion chamber, which is an important consideration for their application.
General| Brand | Siemens |
|---|---|
| Model | QRB1 Series |
| Category | Gas Detectors |
| Language | English |
