3. This instrument is not suitable for safety applications, Emergency Stop equipment or ap-
plications in which a malfunction could cause injuries and / or material damage. If this
notice is not observed, severe health hazards and property damage may occur.
4. This instrument may not be used in a potentially explosive environment. Operation in a
potentially explosive environment causes an increased risk of detonation, fire or explo-
sion as a result of spark formation.
3. Product description
3.1 Delivery contents
• SD 400 Oxi L in carrying case
• 4 (AA) batteries
• Oxygen sensor with transparent storage flask
• Metal sleeve for protection of the electrode (also sinking weight)
• Micro SD card with calibration data and operating manual in various languages
• Operating manual
4. Set-Up
4.1 Inserting the batteries
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4.2 External power supply
A set comprising a Micro USB cable and wall mount is available (optional) for the external
power supply. The Micro USB cable can be connected to a PC or to the wall mount adapter
for electrical supply. If an external energy source is used, the battery symbol in the display is
replaced with "USB".
SD_400 Oxi L_4 07/2020
The battery compartment is located on the back
of the SD 400 Oxi L device. To remove the bat-
teries, the battery compartment lid is opened and
removed. The 4 AA batteries are inserted accord-
ing to the polarity. Then the battery compartment
lid is replaced and closed securely.
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ATTENTION: If the battery indicator in the display
blinks, the batteries must be replaced. If the instru-
ment is being used for an extended period of time
for measurements or the reading of measurement
values, we recommend operating the instrument
via an external power source.
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