1. General information
Read this document carefully and familiarize yourself with the operation of the instrument
before using it. Keep this document ready to hand and in the immediate vicinity of the
instrument so that you or technical staff can refer to it at all times in case of doubt.
Assembly, set-up, operation, maintenance and shut-down may only be performed by
technically qualified personnel. The technical personnel must carefully read and understand
the operating manual prior to beginning all work.
The liability and warranty of the manufacturer for damages and consequential damages
are voided in the event of improper use, non-observance of this operating manual, use by
insufficiently qualified personnel as well as unauthorized changes to the instrument.
The manufacturer is not liable for costs or damages arising through the use of this instrument,
especially in the case of improper use or misuse or faults to the connections or the instrument.
The manufacturer assumes no liability from printing errors.
2. Safety
2.1 Intended use
The SD 400 Oxi L is designed for the measurement of dissolved content of oxygen in water.
Suitable oxygen sensors (available in the standard delivery contents) are used for the measure-
ment. The sensor is connected via a 4-pin bayonet connection. The measurement is taken on
the sensor membrane at the end of the oxygen sensor.
Due to the type of sensor used, the instrument must be calibrated regularly to achieve pre-
cise measurement values. The sensor must be regenerated or replaced if necessary before
performing other measurements.
The safety instructions in this operating manual must be observed (see below).
The instrument may only be used under the conditions and for the purposes for which it
was designed.
The instrument must be handled with care (do not throw, drop, etc.) and used in accordance
with the technical data. It must be protected against soiling.
2.2 Safety instructions
This instrument is built and tested in accordance with the safety provisions for elec-
tronic measurement instruments. The fault-free function and operational safety of
the equipment can only be guaranteed if common, general safety precautions as well
as the instrument-specific safety instructions in this operating manual are observed.
1. Functional and operational safety of the device can only be adhered to under the climatic
conditions specified in the chapter "Technical data".
If the instrument is transported from a cold environment to a warm environment, a fault of
the functionality may arise due to the build-up of condensation. In this case, it is necessary to
wait until the instrument's temperature adjusts to the room temperature before use.
2. If it is suspected that the instrument cannot be used without possibly imposing a danger, it
should be turned off immediately and the potential danger be identified before the equipment
is used again. The safety of the user may be diminished if the instrument
- exhibits visible damages.
- no longer works as specified.
- was stored for an extended period in unsuitable conditions.
In case of doubt, send the instrument to the manufacturer for repair or maintenance.
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SD_400 Oxi L_1 01/2016