ECB E10.12000.37 L-EUF, Operating Manual

Page: 31 / 42

31
Type Overview Flame Monitor:
Typ sensitivity flange with shackle clamped cover spare UV cell
QRA2 without
QRA2(1) with
QRA 2.9 without
QRA 2.9(1) with
QRA2M without
QRA2M(1) with
QRA10.C normal 4 502 1131 0
QRA10M.C hight 4 502 4065 7
Typ sensitivity clamped cover clamped cover spare UV cell
QRA53.C27 AC 220…240 V
QRA53.C17 AC 100…110 V
QRA53.D27 AC 220…240 V
QRA53.D17 AC 100…110 V
QRA55.C27 AC 220…240 V
QRA55.C17 AC 100…110 V
QRA55.D27 AC 220…240 V
QRA55.D17 AC 100…110 V
normal
125 mm
4 502 4065 7
hight
normal
77 mm
hight
normal 4 502 1131 0
hight
4 502 4065 7
black
green
Note
All QRA5… will be supplied with
shackle. A connecting cable AGM19 is
required for connection (see “Accesso-
ries” for QRA5…).
Technical Data
General Data
Average lifetime of UV cell:
- approx. 10,000h at max. +50°C, hig-
her ambient temperatures will signifi-
cantly decrease the lifetime.
System of protection
- QRA2… IP40
- QRA53…, QRA55 IP 54
Dimensioned drawings
All dimensions in mm
Mounting position: any
Transport: IEC 721-3-2
Climatic conditions: class 2K2
Mechanical conditions: class 2M2
Temperature range: -20 to +60°C
Humidity:
<95% relativ
humanity
Operation: IEC 721-3-3
Climatic conditions: class 3K5
Mechanical conditions: class 3M2
Temperature range: -20 to +60°C
Humidity:
<95% relative
humidity
Dewing, icing and ingress of water
are not permitted!
Function
In this monitoring mode, the UV radia-
tion of gas and oil flames is used for the
formation of the flame signal. The radia-
tion detector is a UV sensitive cell with
two electrodes which is ignited by radia
tion in the wave length range between
190 and 270nm, thus generating a cur-
rent in the flame detector circuit.
The UV cell does not respond to the
after-glowing firebricks of the furnace or
the daylight.
Overview
Flame monitor
incidence of radiation
shackle fo
r
direct mounting