Liemke KEILER-35 PRO 2020 Mode D'emploi page 25

Malfunction
Thermal imager does
not power up.
Does not operate from
external power
source.
Image is unclear, with
vertical lines and une­
ven background
The image is too dark.
Colored lines
appear on display or
the image has
disappeared.
Poor image quality /
reduced detection
distance
Smartphone or tablet
cannot be connected
to the device
Wi­Fi signal non existent
or
interrupted
When used in lowtem­
perature conditions, the
image quality of the
surroundings is worse
than in positive tempe­
rature conditions.
KEILER PRO 2020 · Operating Manual 11 / 2020
Possible reason
Battery completely
discharged
USB cable
damaged
External power source
discharged
Calibration required
Low brightness level set.
The device was expo-
sed to static electricity
during
operation.
These problems may occur during observation in
difficult weather condi tions (high humidity, snow,
rain, fog, etc.).
The device password
has been changed.
The device is in an area
wit a large number of
Wi-Fi networks that may
cause interference.
The device is outside
the area of Wi-Fi
coverage. There are
obstacles between
the device and the
receiver (e.g. concrete
walls.)
In positive temperature conditions, objects being
observed (surroundings and background) heat
up differently because of thermal conductivity,
thereby generating a high-temperature contrast.
Accordingly, the image quality produced by
the device will be higher. In low-temperature
conditions, objects being observed (background)
do, as a rule, cool down to roughly the same tem-
perature because of which temperature contrast
is substantially
reduced and the image quality (detail) is poorer.
This is a feature of thermal imaging devices.
Correction
Charge the battery
Replace USB cable
Charge external power
source (if necessary).
Perform image
calibration according
to Section 10 „Sensor
Calibration Mode" of
the Manual.
Adjust display bright-
ness.
After exposure to static
electricity, the device
may either reboot
automatically or require
turning off and on
again.
Delete the network and
reconnect using the
device password
To ensure stable Wi-Fi
operation, relocate the
device to an area with
fewer Wi-Fi networks, or
into an area with none.
Relocate the device
into direct line of sight
of the Wi-Fi signal.
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