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Technical Data - Siemens QRB1 Series Manual

Photoresistive flame detectors

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Ordering
Example

Technical data

General detector data
Environmental
conditions
Function
6/7
Building Technologies
HVAC Products
When ordering, please give type reference according to «Type summary».
QRB1... with plug is always to be ordered without flange / clamp, and vice versa.
QRB1A-A035B40A
QRB1A-A035B40A1 As above, but with:
Degree of protection
Mounting position
Detector cable (only QRB1...)
Weight
-
QRB1... (depending on type)
-
QRB3... (without cable)
Storage
Climatic conditions
Mechanical conditions
Temperature range
Humidity
Transport
Climatic conditions
Temperature range
Humidity
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
Condensation, formation of ice and ingress of water are not permitted!
Supervision of light radiation of oil flames in the visible range of the light spectrum.
The light-sensitive element is a photoresistor whose electrical dark resistance lies in the
MΩ range.
As the intensity of light increases, the electrical resistance drops to the kΩ range and is
evaluated by the burner control for generating the flame signal.
In contrast to RAR selenium photocell of the detectors, glowing firebrick in the combus-
tion chamber can be detected.
Sensitivity: Normal
Casing length: 50 mm
Visible cable length: 35 cm
Stripped length: 40 mm
End of cable: With ferrule
Without plug
Accessories: Without flange / clamp
Accessories: Small flange / clamp included
IP40
optional
stranded copper wire 2 x 0.75 mm²
jacket 5.1 mm dia., PVC
cable length according to «Type summary»
approx. 20...35 g
approx. 35 g
DIN EN 60721-3-1
class 1K3
class 1M2
-20...+60 °C
< 95 % r.h.
DIN EN 60 721-3-2
class 2K2
-20...+60 °C
< 95 % r.h.
DIN EN 60 721-3-3
class 3K5
class 2M2
-20...+60 °C
< 95 % r.h.
CC1N7714en
17.07.2006

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Qrb3 seriesQrb1a-a020b40aQrb1a-a020b40a2Qrb1a-a033b40bQrb1a-a035b40aQrb1a-a035b40a1 ... Show all