16
4 Design and Functions
4.2 Flame Sensors
The evaluation device has three flame sensor inputs:
• Ionisation input (ION)
• UV input
• LDR input
The sensor inputs can be used individually or in combination. If one of the flame sensors de-
tects a flame, the flame relay output is switched on and flame signalled.
Depending on the spectral sensitivity of the flame sensors, these are differently suited for spe-
cific fuels. The following table lists all approved flame sensors for the device and their appli-
cation areas.
The suitability of the device types may differ from that indicated in the table depending on par-
ticular circumstances.
NOTICE
Observe the respective national approvals of the flame sensors, e.g. exists for * no UL ap-
proval.
NOTICE
LAMTEC guarantees that the flame monitor is in perfect working order but cannot offer any
guarantees if it is used improperly.
Continuous operation capability is provided only for sole use of ionisation electrode. When
connecting a UV/LDR sensor the F130I should be used for intermittent operation.
Please observe the specific requirements of your plant when selecting the flame monitor.
We will be pleased to answer any questions you may have about LAMTEC products.
Sensor
type
Manufac-
turer
Sensor
type
F130I input For fuel Con-
tinu-
ous
opera-
tion
Wavelengths
range
Comment
QRA2 /2M Siemens UV tubes UV Gas / oil No 190...270 nm normal
Sensitivity m ...
high
Sensitivity
QRA4.U QRA2 housing
version
QRA10/
10M
QRA2 housing
versionm … high
sensitivity
QRB1A Siemens LDR,
visible
LDR Öl No
450…800nm
normal Design
QRB1B
sensitive design
QRB1C*
high-sensitivity
design
QRB3 / 3S
S ...high
sensitivity
MZ770S* Satronic/
Honeywell
LDR,
visible
LDR Öl No 400 … 800nm
-
Ionisation
electrode
-
Ionisation ION Gas Yes
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