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Technical data
Function
Dimensions
4/4
Environmental conditions
Transport
Climatic conditions
Temperature range
Humidity
Mechanical conditions
Operation
Climatic conditions
Temperature range
Humidity
Condensation, formation of ice and
ingress of water are not permitted!
With this type of flame supervision, the radiation of oil flames in the visible light
spectrum is used for generating the flame signal.
The light-sensitive element is a photoresistor.
When there is no light, the detector's resistance is in the MΩ range.
Its resistance drops as the intensity of illumination increases (kΩ range).
In contrast to the selenium photocell of the RAR... detectors, glowing firebrick in the
combustion chamber can be detected.
Dimensions in mm
4 241 1462 0
4 241 1600 0
26
2
4 286 1490 0
9
1999 Landis & Staefa Produktion Deutschland
CC1N7714E
IEC 721-3-2
class 2K2
-20...+60 °C
< 95 % r.h.
class 2M2
IEC 721-3-3
class 3K5
-20...+60 °C
< 95 % r.h.
QRB1...A
g
A
QRB1...B
g
9
A
A
June 14, 1999
Degree of protection
Mounting orientation
Cable length for detectors used
in connection with LOA... / LAL...
Detector cable
2 x 0.75 mm²; 5.1 mm dia.
Weight
- QRB1... (depending on type)
- QRB3... (without cable)
m
l
7714m04/0499
7
20
m
l
QRB3...
79
Landis & Staefa Division
IP 40
optional
max. 1.5 m
20...35 g
approx. 35 g
4 186 1096 0
8
4 186 8806 0
10
QRB3...
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