Beurer FT 78 - Manual (Page 69)

69
Table 2
Guidance and manufacturer’s declaration – electromagnetic immunity
The FT78 Ear thermometer is intended for use in the electromagnetic environment specified below. The customer or the user of the FT78
Ear 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 FT78 Ear thermometer
requires continued operation during power mains interruptions,
it is recommended that the FT78 Ear 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.