41
11
Appendix
11.3
List of Abbreviations
Abbreviation
Explanation
SIL
The
safety integrity level
serves for the assessment (according to IEC 61508) of the elec-
tric/electronic/programmable electronic (E/E/PE) systems in relation to the reliability of
safety functions, i.e. the reporting of a flame signal.
ESD
Electrostatic discharge
is a spark or disruptive charge that is created due to large differ-
ences in potential that can cause a short, high electrical voltage pulse on an electrical
device.
FPE
A
functional earth ground
is used for trouble-free function of electrical systems and
devices.
FFTD
The
flame failure detection time
is (according to DIN EN 298) the reaction time of an
independent flame monitor between the flame detection and the flame signal that indicates
the flame failure.
PWR
Power (supply voltage)
ERR
Error
FSB
Flame Scanner System Bus
is a communication interface developed by LAMTEC that
works with a protocol of the same name
LDR
A
light dependent resistor
or a
flame sensor input
for this type of flame sensor.
UV
Is a
flame sensor input
for the connection of UV tubes which utilise the
ultraviolet
wave-
length range of the flame for flame detection.
ION
Is an
ionisation input
which utilises the rectifying properties of the flame in order to detect
it.
HP
The
main processor
is one of two controllers within the double-edged system structure of
the flame monitor. This chiefly takes over the control of the device. Peripherals which are
connected to this are designated with HP.
UP
The
monitoring processor
is one of two controllers within the double-edged system struc-
ture of the flame monitor. This chiefly takes over the monitoring of the main processor.
Peripherals which are connected to this are designated with UP, if necessary.
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