Landis & Staefa Division
CC1N7714E
June 14, 1999
1/4
7
714
Photoresistive Detectors
QRB...
QRB1...A
with large flange
QRB1...A
with small flange
QRB1...B
QRB3...
and clamp
and clamp
with plug
with flange and clamp
Photoresistive flame detectors for use with Landis & Staefa burner controls,
for the supervision of oil flames in the visible light spectrum.
The flame detectors are used primarily in connection with burner controls for
small burners.
The QRB... and this data sheet are intended for use by OEMs which integrate
the flame detectors in their products.
The QRB... are designed for the supervision of yellow-burning oil flames.
Photoresistive detector
For use with burner controls type
QRB...
LAL..., LOA...
For QRC... blue-flame detectors, refer to data sheet 7716.
Compact photoresistive detector with infused two-wire thermoplastic cable.
The flame detector is available with normal or high sensitivity and with or without
flange / clamp or soft plastic plug (refer to «Type summary»).
Flame detector without soft plastic plug.
This type of detector is fitted with the help of a securing flange.
A guide groove in the securing flange and a cam on the detector clamp ensure
vibration-free mounting and make certain that the detector is always correctly sited
towards the flame.
•
Securing flange with 22 mm spacing for use with
the
QRB1...1
•
Securing flange with 36 mm spacing for use with
the
QRB1...2
•
Clamp
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 guarantees correct alignment of the photoresistive element with the flame.
The detector is supplied with a protective tube of 17 mm diameter.
This type of detector is always secured with a flange and a clamp (refer to
«Accessories»).
ISO 9001
Use
Mechanical design
QRB1...A
Accessories
QRB1...B
QRB3...
