6/7
Building Technologies
CC1N7714en
HVAC Products
17.07.2006
Ordering
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
•
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
QRB1A-A035B40A1
As above, but with:
•
Accessories: Small flange / clamp included
Technical data
Degree of protection
IP40
Mounting position
optional
Detector cable (only QRB1…)
stranded copper wire 2 x 0.75 mm²
jacket 5.1 mm dia., PVC
cable length according to «Type summary»
Weight
-
QRB1... (depending on type)
-
QRB3... (without cable)
approx. 20...35 g
approx. 35 g
Storage
DIN EN 60721-3-1
Climatic conditions
class 1K3
Mechanical conditions
class 1M2
Temperature range
-20...+60 °C
Humidity
< 95 % r.h.
Transport
DIN EN 60 721-3-2
Climatic conditions
class 2K2
Temperature range
-20...+60 °C
Humidity
< 95 % r.h.
Operation
DIN EN 60 721-3-3
Climatic conditions
class 3K5
Mechanical conditions
class 2M2
Temperature range
-20...+60 °C
Humidity
< 95 % r.h.
Condensation, formation of ice and ingress of water are not permitted!
Function
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
M
Ω
range.
As the intensity of light increases, the electrical resistance drops to the k
Ω
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.
Example
General detector data
Environmental
conditions