Senect Oxygen Sensor O2S Manuale utente
Oxygen Sensor O2S
Manual
Product type
2
Product type
Name of product:
SENECT®Oxygen Sensor O2S
Type:
O2S-20-SC
Art.-No.:
2100
Producer:
SENECT GmbH & Co. KG
An 44 –No. 11
76829 Landau / Germany
Important note:
Please read this manual carefully and store it so that you can use
it later. Read the warning and safety notes attentive.
Further information and latest software releases or documents
can be downloaded from:
www.senect.de
© SENECT GmbH & Co. KG - FW 01.10
Table of contents
3
Table of contents
Product type.................................................................................. 2
Table of contents........................................................................... 3
General Security Notes.................................................................. 5
Intended use.................................................................................. 7
Getting started .............................................................................. 8
Getting started –Short version................................................... 11
Maintenance and cleaning .......................................................... 12
Cleaning................................................................................... 12
Sensor disinfection .................................................................. 12
Recalibration ........................................................................... 13
Oxygen signal: 1-Point-calibration .......................................... 15
Short-version: Oxygen signal: 1-Point-calibration................... 17
Oxygen signal: 2-Point-Calibration.......................................... 17
Temperature: 2-Point-Calibration........................................... 18
Sensor Error............................................................................. 19
Salinity / Conductivity correction............................................ 20
Technical data ............................................................................. 22
Information about the correct disposal ...................................... 23
Guarantee.................................................................................... 24
Table of contents
4
Used symbols and wording
DANGER!
Warning of life threatening
dangers.
WARNING!
Warning of possible life
threatening and / or severe
irreversible injuries.
ATTENTION!
Warning of possible medium
or slight injury.
ATTENTION!
Follow the notes to avoid
damage of equipment.
NOTE!
Further information for the
use of the device.
NOTE!
Further information for the
use of the device.
General Security Notes
5
General Security Notes
The oxygen sensor O2S is an electronic unit for the
measurement of the concentration of dissolved oxygen in
water and must be used in combination with SENECT control
units.
Since it is an electronic product the common prerequisites
for a safe instrument usage must be fulfilled. The
corresponding control unit must be operatated
with 230 V AC (~50 Hz). Ensure that all cables are
installed safely so that no obstacles for persons are
built and all. Mount all cables and electric devices
protected against direct environmental impacts
like overheating by direct sunlight and water.
Even if the products are protected against spray
water, the product´s lifetime will be elongated, if it is
mounted on a protected place. The oxygen sensor O2S uses
24 V DC supply voltage which is therefore not of danger for
persons.
For many applications a ground fault circuit interruper
(interrupting current <= 30 mA) is required by law. Inform
yourself about the valid legislation.
General Security Notes
6
The operating temperature of the device must be between
0°C and +40°C. It is not allowed to modify the sensor, to open
the housing or to insert anything into the housing.
The oxygen sensor O2S is designed to be operated by
professional users. However, it can be operated by children
of the age of at least 8 years and persons with limited
physical, sensorial or cognitive ability, if they are supervised
and trained in the usage of the instrument, so that no
dangers or threats can result of the operation.
Please store this manual. We suggest the storage a copy of
the manual in the vicinity of the device.
Technical and optical changes of this manual are subject to
alterations.
Warning: Before starting any maintenance work,
unplug all electrical devices in the water.
Intended use
7
Intended use
The oxygens sensor O2S can be used to measure the
concentration and saturation of dissolved oxygen (O2) in
water in aquaculture applications. It has a measurement
range from 0 to 200% air saturation (a. s.) or 0 to 20 mg O2/
l at temperatures between 0°C and +40°C.
The sensor measures the saturation concentration based on
the principle of luminescence quenching with a resolution of
1% a.s. or 0.1 mg / l and the temperature with a resolution
of 0.1°C. Based on these two measurements, the absolute
concentration of dissolved oxygen in mg O2/ l is calculated.
The sensor is intended to be used in industrial aquaculture
farms in freshwater.
Getting started
8
Getting started
Scope of delivery
o1 x Oxygen sensor O2S
o1 x Manual
Note
Please check directly after delivery, that the
package is not destroyed or damaged or was
opened before. Please check also, that all parts as
listed above are included. If anything is missing or broken,
please contact us as soon as possible within 14 days.
Unfortunately, we cannot accept later information of
damage, which happened during the transport.
Installation and start-up
Choose a place for the electronic interface of the
O2S which is clean, dry and protected from direct
sunlight. Ensure that all cables are placed safely
and all regulations are fulfilled.
Remove the blue protection cap from the sensor and mount
the sensor so that the sensor is submerged.
It is also possible to mount the sensor so that only the lower
sensing part is submerged. Please ensure that the sensor is
Getting started
9
at least to 80% submerged, since the temperature is
measured on the sensor housing.
When the sensor will be installed at a location with a
changing water level, it can be mounted free swimming on a
float or completely submerged.
Fig. 1: Mounting possibilities of the sensor.
Please consider when selecting the mounting location that in
surface waters like fish ponds the solar radiation can lead to
a thermal stratification of the water body, associated with
strong gradients in dissolved oxygen.
Ensure to install the sensor at a location, where no rising gas
bubbles can be caught under the sensor.
Getting started
10
Fig. 2: Stainless steel holder Art. No. 2102.
Protect your sensor from fish biting on the sensor
membrane! SENECT offers protection cages.
Connect the blue marked plug of the sensor with a sensor
input port (also blue marked) of your control unit.
The SENECT control units recognize the sensor itself and start
automatically the measurements.
Take into account that the measurement interval is set to
30 s to elongate the lifetime of the sensing cap.
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