Ofs udox User manual

µdox
Operating instructions
Version 1.6.8

3
Table of contents
1. Manufacturer................................................................................................................4
2. Overview......................................................................................................................4
3. Guarantee .....................................................................................................................4
4. Liability........................................................................................................................4
5. License conditions........................................................................................................4
6. General safety instructions...........................................................................................4
7. LAB-Pocket meter case ...............................................................................................6
8. Device description........................................................................................................7
9. Initial set up / operation ...............................................................................................7
10. Operation......................................................................................................................7
10.1 Operating elements and connections............................................................................7
10.1.1. Key pad ........................................................................................................................7
10.1.2. Display.........................................................................................................................8
10.1.3. Status information hand-held meter.............................................................................9
10.1.4. Socket panel.................................................................................................................9
10.2 Switch on the hand-held meter.....................................................................................9
10.3 Switch off the hand-held meter..................................................................................10
10.4 Navigation / Program guides......................................................................................10
11. Calibration..................................................................................................................10
11.1. Temperature pH / O2 .................................................................................................11
11.2. pH value.....................................................................................................................12
11.3. Oxygen value .............................................................................................................13
12. Special functions........................................................................................................14
12.1. Determination acid capacity.......................................................................................14
12.2. Determination total hardness .....................................................................................16
13. Sensor information.....................................................................................................17
14. Measurement sites / measurement data......................................................................17
15. Measurement units.....................................................................................................20
16. Options.......................................................................................................................22
17. About us.....................................................................................................................23
18. Maintenance / Cleaning / Storage..............................................................................23
19. Error messages...........................................................................................................23
20. Explanations in other languages - abbreviated version..............................................24
21. Scope of delivery .......................................................................................................25
22. Technical data ............................................................................................................26

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1. Manufacturer
OFS Online Fluid Sensoric GmbH
Company for analytical and measurement technology systems
Heidelbergweg 9
07580 Ronneburg
Germany
Telephone: [phone]
Fax: [phone]
[email protected]
www.water-monitoring.com
2. Overview
The µdox multi-parameter hand-held meter is used to measure the water values pH, redox, total
hardness, acid capacity, and dissolved oxygen. The tests must correspond to the chemical and
physical directives in the chapter “Technical data”.
3. Guarantee
The manufacturer guarantees the µdox hand-held meter for a period of 6 months.
This excludes the sensors and accessories for the meter case LAB-Pocket.
This guarantee will become void in the event of:
improper or unauthorised intervention in the devices or components
effects of shock or impact
improper analytical, mechanical or electrical effects of any kind or type
4. Liability
The manufacturer accepts no liability for the correctness of measurements.
This exclusion of liability is based on the fact that measured results depend on the user’s manual
calibrations.
5. License conditions
On purchase of this device, the user receives an exclusive, non-transferable right to use the
software installed by the manufacturer. Use is authorised exclusively for operation of the device
purchased. Unlawful use, transfer, copying or re-compilation of the software is nor permitted.
The same conditions apply to software updates purchased.
6. General safety instructions
Safety instructions in the operating instructions
These operating instructions contain important notes and information for safe handling of the
µdox hand-held meter. In the interests of safe handling of the device, these instructions must be
strictly observed. Always keep the operating instructions in the meter case LAB pocket for
reference if necessary.

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Safety instructions
Handling the reactants delivered.
Protective measures for safe handling.
No special measures are required if handled properly.
In use:
Avoid direct contact with the mucous membrane, eyes or the skin.
When not in use:
All solutions and the sodium sulphite should always be tightly closed
General notes:
Wash any clothes contaminated by chemicals with water as normal.
After inhalation:
Supply fresh air; consult a doctor if health issues arise.
After skin contact:
Wash off with water; consult a doctor if health issues arise.
After eye contact:
Rinse the eyes carefully with running water with the eyelids held open.
Consult a doctor if health issues arise.
After ingestion:
Rinse out the mouth and drink a glass of water. Do not induce vomiting.
Consult a doctor if health issues arise.
Notes on combined storage:
Store away from foodstuffs
Recommended storage temperature: 15 - 25 °C
Intended use of the hand-held meter
The exclusive, intended use of the hand-held meter is measuring pH, redox, dissolved oxygen,
total hardness and acid capacity in water solutions, and also measuring oxygen content in gases.
Any other use does not count as intended use.
Conditions for safe operation
The hand-held meter may only be used in accordance with its intended use.
The hand-held meter may only be used in the absence of any unapproved mechanical,
thermal or electrical influences.
The hand-held meter may only be powered by or connected to the energy sources
stated in the operating instructions (See the chapter “Initial setup”)
The hand-held meter may only be used in the environmental conditions stated in the
operating instructions (see chapter “Technical data”).
Unauthorised operation
The hand-held meter may not be used when:
The sensors are stored or used outside the authorised temperature range between 5°C
and 50°C.
The sensors or the hand-held meter are exposed to temperature or pressure fluctua-
tions.

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7. LAB-Pocket meter case
The LAB-Pocket meter case consists of the µdox hand-held meter including sensors, the oper-
ating instructions and accessories.
1
µdox hand-held meter
2
Operating instructions
3
USB sensor cable and communications cable for the µdox hand-held meter
4
Distillate spray bottle for rinsing and cleaning the sensors
5
pH buffer 9.18
6
pH buffer 7.00
7
Sodium sulphite
8
Syringe and tubes
9
Replacement sensor vial.
10
Sensor(s) with sensor vials and 1m cable
11
USB power supply unit for µdox hand-held meter
12
Reagent solution RM A and RM B incl. replacement bottle
13
Pipette
14
Double spatula
2
8
7
5
6
4
3
1
12
11
13
14
10
9

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8. Device description
The µdox multi-parameter hand-held meter gives precise, reliable measurement of the water
values pH, redox, total hardness, acid capacity, and dissolved oxygen, even at trace levels. The
µdox unit is characterised by ease of operation combined with high-quality measurement stand-
ards.
Only OFS sensors can be connected to the µdox hand-held meter.
The LAB-Pocket meter case is part of the equipment, as well as the hand-held meter and sen-
sors.
9. Initial set up / operation
For initial set up, the sensor cables should be inserted into the sensor sockets (2) as per the
diagram in the chapter “Socket panel”, and tightened using the screw connector.
One or two sensors can be connected, whereby the choice of sensors sockets (2) is free.
Switch the hand-held meter on using the key pad [ON/OFF] and check charge status (11) of the
integrated battery in the display (see chapter “Display) top right.
If the charge status of the battery falls below 30%, the USB sensor cable must be connected to
the charging socket (1) in the socket panel. The USB sensor cable must then be connected to a
PC or a USB power supply unit to charge the battery. The remaining battery time is shown
optically in percent (%) via the battery symbol (11).
10. Operation
10.1 Operating elements and connections
10.1.1. Key pad
In the operating instructions, keys are indicated using square brackets [ … ], for example [OK].
Socket panel
Display
Key pad

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[ON/OFF]
Switch the hand-held meter on/off
[MENU]
Open the menu for measurement / system settings
[▲] / [▼]
Menu control.
increase / lower values
[◄]
Leave the menu for measurement / system settings
Cancel measurement/calibration
[OK]
Open the menu for measurement / system settings
Confirm input
10.1.2. Display
Example description of display output:
1
Connected sensor, upper half of display pH.
lower half O2 sensor
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8a
Unit of oxygen value
Transient mode for pH sensor
2
Sensor temperature value
8b
Transient mode for O2 sensor
3
4
pH value recorded
Redox potential recorded
9
Current measurement location and
available data memory capacity
5
Salinity set and air pressure recorded
10
Time and date
6
Unit set for oxygen concentration
11
Battery capacity available in %
▼
▲
2
2
3
4
6
7
9
10
11
13:22:43 12/09/2017
active measuring point: 1
free memory: 96.6%
O2 Sensor
23.8 °C
SA=0.0 P=971.3 mbar
7.06
mg/l
▼
▲
pH redox
22.9 °C
7.67
175.82 mV
1
1
5
8b
▼
▲
8a
81 %

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10.1.3. Status information hand-held meter
Charging status
When the charging status is flashing, the battery is fully-
charged. In this picture, there is still 100% battery capacity
available
▼
__
▲
Transient mode - measurement value unstable
The distance between the arrows shows that the measurement
value is not stable yet. The value measured should not be used
yet.
▼
▲
Transient mode - measurement value stabilising
Once the arrows meet in the middle, the measured value is as
stable as possible.
CAUTION: Drift may still arise over time !!!
Number values on the display should be noted.
Calibrate the sensor
Reminder
3 x flashes after switching on the device remind you that the
last calibration took place over 30 days ago.
This display only acts as a note and reminder.
It has no influence on other measurements.
10.1.4. Socket panel
1Socket for USB sensor cable for charging the battery and for data transfer
2Sockets for connecting the sensors.
There is no fixed assignment of the two sockets for the sensors.
Connection for the sensors supplied can be chosen freely.
10.2 Switch on the hand-held meter
Switch on the device using [ON/OFF]. Then the OFS logo and the software version number
are shown briefly on the display. Then comes the measurement view in the main menu.
1
2
2
100%

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10.3 Switch off the hand-held meter
Display illumination
If a key is not pressed for two minutes, the hand-held meter reduces display brightness to protect
battery life. The illumination switches back on the next time any key is pressed.
If a key is not pressed for five minutes, the hand-held meter switches off automatically.
The device can be switched on or off manually at any time using [ON/OFF].
10.4 Navigation / Program guides
In the measurement view, use [MENU] to open the sub-menus for sensor-dependent and sen-
sor-independent settings.
Use [▲] or [▼] to toggle between calibration analysis and measurement setting. Use [OK] to
open the sub-menu and go to more functions.
Use [◄] to leave the current setting and go back to the sub-menu. Current calibrations or meas-
urements can be aborted at any time.
11. Calibration
Why is calibration necessary?
Because sensors age and change their behaviour. This leads to imprecise measurements. Cali-
bration continuously updates the internal behaviour parameters. Precise calibration as per the
directives is important. Aged or mixed calibration solution or unstable measured values cali-
brate a sensor wrongly, which makes subsequent measurements faulty.
When should calibration be done?
When analysing water with very large, different ionic strengths
The calibration interval of 30 days has expired.
As the need to calibrate a sensor depends on a number of conditions, the user is reminded to re-
calibrate by the text “Calibrate sensor” flashing 3 x in the main menu after switching on 30
days after the last calibration of the µdox hand-held meter.
This display is only intended as a note and reminder.
Main menu
calibration
special functions
sensor information
measurement sites/data
measurement units
options
about us
[OK]
[OK]
[▲]
or
[▼]