10
9
Troubleshooting
EMC Information
Diagnosis
Guidance and manufacturer's declaration - electromagnetic emissions
Guidance and manufacturer's declaration - electromagnetic immunity
The screen shows 'Erl'
Buttons have no
response
Emissions test
Immunity test
Compliance level
Electromagnetic environment -guidance
IEC60601
test level
Compliance
Electromagnetic environment – guidance
No display or
abnormal display
Power off when open
The screen shows
'Lo' or 'Hi'
Solution
1. Check the object you are attempting to measure. The device is unable to effectively penetrate hair,
water and cosmetics.
2. Check the environment as any fluctuating temperatures will influence the reading.
3. Have you just used the device to read very high or low temperature? Then leave the device for 10 minutes.
4. The temperature you are attempting to read is greater than 42.9°C or lower than 32°C.
This device is intended for using in the electromagnetic environment specified below. You should ensure it is
used in such an environment.
RF emissions CISPR 11
This device is intended for using in the electromagnetic environment specified below. You
should ensure it is used in such an environment.
Electrostatic discharge
(ESD) IEC 61000-4-2
±2,±4,±6kV for
contact
discharge
±2,±4,±8kV air
discharge
±2,±4,±6kV for contact
discharge ±2,±4,±8kV
air discharge
Floors should be wood, concrete or ceramic
tile. If floors are covered with synthetic
material, the relative humidity should be at
least 30%.
Mains power quality should be that of a
typical commercial or hospital environment.
Mains power quality should be that of a
typical commercial or hospital environment.
Mains power quality should be that of a
typical commercial or hospital environment.
If the user of this device requires continued
power without interruption we recommend
this device is powered from an
uninterruptible power supply or a battery.
Power frequency magnetic fields should be
at levels characteristic of a typical location
in a typical commercial or hospital
environment.
N/A
N/A
N/A
3 A/m
±2kV for AC
power lines
±1kV for DC
power lines
±1kV line(s) to
line(s)
±2kV line(s) to
earth
<5% Ur (>95%
dip in Ur) for 0.5
cycle
<40% Ur (>60%
dip in Ur) for 5
cycles
<70% Ur (30%
dip in Ur) for 25
cycles
<5% Ur (>95%
dip in Ur) for 5s
3 A/m
Electrical fast
transient/burst IEC
61000-4-4
Voltage dips, short
interruptions and voltage
variations in power supply
input lines IEC 61000-4-11
Power frequency (50/60Hz)
magnetic field IEC
61000-4-8
Note: Ur is the AC mains voltage prior to application of the test level.
Surge IEC 61000-4-5
RF emissions CISPR 11
Class B
N/A
N/A
Harmonic emissions IEC 61000-3-2
Voltage fluctuations/flicker
emissions IEC 61000-3-3
Group 1
This device uses RF energy only for its internal function.
Therefore, its RF emissions are very low and are not likely to
cause any interference in nearby electronic equipment.
This device is suitable for use in all establishments other than
those directly connected to the public low-voltage power supply
network that supplies buildings used for domestic purposes.
The environment temperature exceeds the normal working range of 16°C – 35°C (60.8°F - 95°F)
1. Load and unload the battery
2. Check if the setting is in progress
Unload the batteries and load again
Check the batteries, load and unload the batteries again
