Dostmann Electronic OXY 7, OXY 70 User Manual
OXY 7 _ Ver. 1.0 _ 02/2017
OXY 7
Portable oximeter OXY 7
Polarographic sensor
%O2 / mg/l / Temp. / mbar
SUMMARY
Content Index
1. Description of the instrument.......................................................................................................1
1.1 Display LCD ................................................................................................................................1
1.2 Connections for the probe ..........................................................................................................1
1.3 Keypad ........................................................................................................................................2
1.3.1 Keypad operations ...............................................................................................................2
1.3.2 Switching on the instrument .................................................................................................2
1.3.3 Switching off the instrument .................................................................................................2
1.3.4 Auto power off ......................................................................................................................2
1.4 Function of the keys ...................................................................................................................3
2. Information about oxygen probe DO7/3mt .................................................................................3
2.1 Sensing element .........................................................................................................................4
2.2 Membrane ...................................................................................................................................4
2.3 Electrolyte ...................................................................................................................................4
2.4 Polarization time .........................................................................................................................4
2.5 New sensor with new instrument ................................................................................................4
2.6 Probe storage .............................................................................................................................4
2.7 Not using the sensor for a long period of time: over one month ................................................4
3. Calibration of the oxygen sensor .................................................................................................5
3.1 Calibration in air at 100% ...........................................................................................................5
3.2 Calibration with zero oxygen standard .......................................................................................5
3.3 Calibration interval ......................................................................................................................6
4. Dissolved oxygen measurement ..................................................................................................6
4.1 Before starting ............................................................................................................................6
4.2 Methods of measurement ...........................................................................................................6
4.3 Making the measurement ...........................................................................................................7
4.4 Compensation of the barometric pressure .................................................................................7
4.5 Salinity compensation (manual) .................................................................................................7
4.6 Automatic temperature Compensation ( ATC) ...........................................................................7
4.7 Manual Temperature Compensation (MTC) ...............................................................................7
5. Maintenance of the probe DO7/3mt .............................................................................................8
5.1 Replacing the electrolyte ............................................................................................................8
5.2 Maintenance of the anode and the cathode ...............................................................................8
5.3 Replacing the membrane cap ....................................................................................................8
6. Error messages ..............................................................................................................................9
7. Restore to factory default setting ................................................................................................9
8. Replacing the batteries .................................................................................................................9
9. Parameter settings.......................................................................................................................10
9.1 Setup Menu ..............................................................................................................................10
9.2 Parameters of the setup menu and factory default settings .................................................... 11
10. Calibration of temperature sensor ............................................................................................. 11
10.1 Useful information ..................................................................................................................... 11
10.2 Calibration procedure ............................................................................................................... 11
11. Technical specifications .............................................................................................................12
12. Accessories and spare parts ......................................................................................................13
13. Disposal of electronic devices ...................................................................................................13
1
OXY 7
1. Description of the instrument
1.1 Display LCD
1.2 Connections for the probe
In the table below, are the connections for the probe:
Model
Description
OXY 7
BNC – Connection for polarographic oxygen sensor DO7/3mt
RCA (Temp) – Connection for the temperature sensor
Type of parameter
Actual value
Stability indicator
Points of calibration
Temperature probe
connected (ATC)
Temperature value
2
OXY 7
1.3 Keypad
OXY 7
1.3.1 Keypad operations
Momentary press <1,5 seconds , Long press >1,5 seconds.
1.3.2 Switching on the instrument
Press to power on the instrument: The display shows all the segments → the firmware version and
the internal settings → measurement in the last selected mode.
1.3.3 Switching off the instrument
In the measurement mode, press and hold for 3 seconds to turn off the instrument.
1.3.4 Auto power off
This meter powers off automatically after 20 minutes of inactivity. To deactivate auto power-off go to the
parameter P6.8 of setup menu and select Off.
On Auto power off enabled
Off Auto power off disabled
During calibration and setup, press to exit and return to measurement mode, press again for 3 sec. to switch off.
Note:
3
OXY 7
1.4 Function of the keys
Key
Press
Description
Momentary
press
With the meter turned off, press this button to turn it on
During calibration or setup: press to exit and turn to measurement mode
Long press
During measurement: press for 3 seconds to turn off the instruments
Momentary
press
During measurement: press to enter in calibration
Momentary
press
Press to change measurement mode between: %O2 mg/l mbar
Momentary
press
During measurement: press to enter setup
During calibration: press to confirm when stable
During setup: press to select/confirm the program
Long press
When working with manual temperature compensation (MTC), to change the
temperature value, keep pressing this button until the temperature value starts
flashing, adjust the value with these keys and press to confirm
Momentary
press
During setup: press to scroll in setup menu
In setup parameter: press to change the value
2. Information about oxygen probe DO7/3mt
The probe DO7/3mt is a polarographic type with integrated temperature sensor. The oxygen sensor uses
a BNC connector while the temperature sensor uses an RCA (Chinch) connector.
Se nsor DO 7/3mt
Membrane cap
Integrated temperature sensor
Loading...