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35
Guidance and manufacturer’s declaration – electromagnetic immunity
The SFT75 Multi-function Thermometer is intended for use in the electromagnetic environment specified below. The customer or the user of
the SFT75 Multi-function Thermometer should assure that it is used in such an environment.
IMMUNITY test IEC 60601 test level Compliance level Electromagnetic environment – guidance
Electrostatic discharge (ESD)
IEC 61000-4-2
± 6 kV contact
± 8 kV air
± 6 kV contact
± 8 kV air
Floor should be wood, concrete or ceramic tile. If floors are
covered with shythetic material, the relative humidity should
be at least 30%.
Electrical fast transient/burst
IEC 61000-4-4
±2 kV for power
supply lines
±1 kV air for input/out
-
put lines
Not applicable
Mains power quality should be that of a typical commercial or
hospital environment.
Surge
IEC 61000-4-5
±1kV differential mode
±2kV common mode
Not applicable
Mains power quality should be that of a typical commercial or
hospital environment.
Voltage dips, short interrup
-
tions and voltage variations
on power supply input lines
IEC 61000-4-11
<5% U
T
(>95% dip in
U
T
for 0.5 cycle
40% U
T
(60% dip in
U
T
for 5 cycles
70% U
T
(30% dip in
U
T
for 25 cycles
5% U
T
(>95% dip in
U
T
for 5 sec
Not applicable
Mains power quality should be that of a typical commercial
or hospital environment. If the use of the SFT75 Multi-func
-
tion Thermometer requires continued operation during power
mains interruptions, it is recommended that the SFT75 Multi-
function Thermometer be powered from an uninterruptible
power supply or a battery.
Power frequency (50/60 Hz)
magnetic field IEC 61000-4-8
3 A/m 3 A/m
Power frequency magnetic fields should be at levels characte
-
ristic of a typical location in a typical commercial or hospital
environment.
NOTE: U
T
is the a.c. mains voltage prior to application of the test level.
Table 2
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