VWR® MD 8000 H
8000 H
MD
Multi Parameter Meter
OPERATING MANUAL
European Catalogue Number(s):
PH SET: 665-0494
COND SET: 665-0495
DI.OX SET: 665-0496
Version: 1
Issued: November 28, 2018 7:51 am
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MD 8000 H
Legal Address of Manufacturer:
VWR International bvba
Researchpark Haasrode 2020
Geldenaaksebaan 464
B-3001 Leuven
+32 16 385011
http://be.vwr.com
Country of origin: Germany.
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MD 8000 H Contents
Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.1 Safety information in the operating manual . . . . . . . . . . 7
1.1.2 Safety signs on the meter . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.3 Further documents providing safety information . . . . . . 7
1.2 Safe operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.2 Requirements for safe operation . . . . . . . . . . . . . . . . . . 8
1.2.3 Unauthorized use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 MD 8000 H meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 IDP sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.2 Automatic sensor recognition. . . . . . . . . . . . . . . . . . . . 10
3 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . . . . . . 11
3.2 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Initial commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3.1 Inserting the batteries . . . . . . . . . . . . . . . . . . . . . 14
5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 General operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1.1 Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.3 Status information (meter) . . . . . . . . . . . . . . . . . . . . . . 16
5.1.4 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.5 Sensor info. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3 Switching off the meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4.2 Measured value display . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4.3 Menus and dialogs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4.4 Navigation example 1:Setting the language . . . . . . . . 21
5.4.5 Example 2 on navigation: Setting the date and time . . 23
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MD 8000 H
6 pH value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1.1 Measuring the pH value . . . . . . . . . . . . . . . . . . . . . . . 25
6.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . . . . . 26
6.2 pH calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.2.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.2.2 When do you have to calibrate? . . . . . . . . . . . . . . . . . 27
6.2.3 Carrying out automatic calibration (AutoCal) . . 27
6.2.4 Carrying out a manual calibration (AnyCal) . . . . . . . . 30
6.2.5 Calibration points . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2.6 Calibration data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7 ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1.1 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . . . . . 38
7.2 ORP calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8 Dissolved oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.1.1 Measuring D.O.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . . . . . 42
8.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.2.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.2.2 When to calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.2.3 Calibration procedures . . . . . . . . . . . . . . . . . . . . . . . . 43
8.2.4 Calibration in water vapor-saturated air . . . . . . . . . . . 43
8.2.5 Calibrating with Comparison meas. (e.g. Winkler
titration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.2.6 Zero point calibration . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2.7 Calibration data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.1.1 Measuring the conductivity . . . . . . . . . . . . . . . . . . . . . 48
9.1.2 Measuring the temperature. . . . . . . . . . . . . . . . . . . . . 50
9.2 Temperature compensation. . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.3.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.3.2 When to calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
9.3.3 Determining the cell constant (calibration in control
standard). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
9.3.4 Calibration data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
10 Turbidity measurement (VisoTurb®900-P) . . . . . . . . . . . . . 54
10.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
10.1.1 Measuring the turbidity . . . . . . . . . . . . . . . . . . . . . . . . 54
10.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
10.2.1 Why calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
10.2.2 When to calibrate? . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
10.2.3 Calibration standards . . . . . . . . . . . . . . . . . . . . . . . . . 56
10.2.4 Carry out calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 57
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MD 8000 H
10.2.5 Calibration data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
11 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
11.1 pH measurement settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
11.1.1 Settings for pH measurements . . . . . . . . . . . . . . . . . . 61
11.1.2 Buffer sets for calibration . . . . . . . . . . . . . . . . . . . . . . 62
11.1.3 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11.2 ORP measurement settings. . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11.2.1 Settings for ORP measurements . . . . . . . . . . . . . . . . 63
11.3 D.O. measurement settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11.3.1 Settings for D.O. sensors
(menu for measurement and calibration settings) . . . 63
11.3.2 Enter cap coefficients . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.3.3 Saturation, local . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.4 Cond measurement settings . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.4.1 Settings for IDP conductivity sensors. . . . . . . . . . . . . 65
11.5 Turb measurement settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
11.5.1 Settings for turbidity sensors . . . . . . . . . . . . . . . . . . . 67
11.6 Sensor-independent settings . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.6.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.6.2 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.6.3 Automatic Stability control . . . . . . . . . . . . . . . . . . . . . 69
11.6.4 Automatic switch-off function . . . . . . . . . . . . . . . . . . . 70
11.6.5 Display illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11.7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11.7.1 Resetting the measurement settings . . . . . . . . . . . . . 70
11.7.2 Resetting the system settings. . . . . . . . . . . . . . . . . . . 72
12 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12.1 Manual data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12.2 Automatic data storage at intervals . . . . . . . . . . . . . . . . . . 74
12.3 Measurement data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
12.3.1 Editing the measured value data storage . . . . . . . . . . 76
12.3.2 Erasing the measurement data storage . . . . . . . . . . . 77
12.3.3 Measurement dataset . . . . . . . . . . . . . . . . . . . . . . . . . 77
12.3.4 Storage locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
13 Transmitting data (USB interface). . . . . . . . . . . . . . . . . . . . . 79
13.1 Outputting current measurement data . . . . . . . . . . . . . . . . . . . 79
13.2 Transmitting data (to a PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
13.3 Connecting the PC / USB-B interface (USB Device) . . . . . 79
13.4 Options for data transmission to a PC . . . . . . . . . . . . . . . . . . . 80
13.5 MultiLab Importer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
14 Maintenance, cleaning, disposal. . . . . . . . . . . . . . . . . . . . . . 81
14.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
14.1.1 General maintenance activities. . . . . . . . . . . . . . . . . . 81
14.1.2 Replacing the batteries . . . . . . . . . . . . . . . . . . . . . . . . 81
14.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
14.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
14.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
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MD 8000 H
15 What to do if.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
15.1 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
15.2 Dissolved oxygen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
15.3 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
15.4 General topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
16 Firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
16.1 Firmware update for the meter MD 8000 H . . . . . . . . . . . . . . . 87
16.2 Firmware update for IDP sensors . . . . . . . . . . . . . . . . . . . . . . 88
17 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
18 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
19 Technical service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
20 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
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MD 8000 H Safety
1 Safety
1.1 Safety information
1.1.1 Safety information in the operating manual
This operating manual provides important information on the safe operation of
the meter. Read this operating manual thoroughly and make yourself familiar
with the meter before putting it into operation or working with it. The operating
manual must be kept in the vicinity of the meter so you can always find the information you need.
Important safety instructions are highlighted in this operating manual. They are
indicated by the warning symbol (triangle) in the left column. The signal word
(e.g. "Caution") indicates the level of danger:
WARNING
indicates a possibly dangerous situation that can lead to serious (irreversible) injury or death if the safety instruction is not
followed.
CAUTION
indicates a possibly dangerous situation that can lead to
slight (reversible) injury if the safety instruction is not followed.
NOTE
indicates a possibly dangerous situation where goods might be damaged
if the actions mentioned are not taken.
1.1.2 Safety signs on the meter
Note all labels, information signs and safety symbols on the meter and in the
battery compartment. A warning symbol (triangle) without text refers to safety
information in this operating manual.
1.1.3 Further documents providing safety information
The following documents provide additional information, which you should
observe for your safety when working with the measuring system:
• Operating manuals of sensors and other accessories
• Safety datasheets of calibration or maintenance accessories (such as buffer
solutions, electrolyte solutions, etc.)
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Safety MD 8000 H
1.2 Safe operation
1.2.1 Authorized use
The authorized use of the meter consists exclusively of the measurement of the
pH, ORP, conductivity and dissolved oxygen in a laboratory environment.
Only the operation and running of
the meter according to the instructions and technical specifications given
in this operating manual is authorized (see section 3 T
Any other use is considered unauthorized.
1.2.2 Requirements for safe operation
Note the following points for safe operation:
• The meter may only be operated according to the authorized use specified
above.
• The meter may only be supplied with power by the energy sources
mentioned in this operating manual.
• The meter may only be operated under the environmental conditions
mentioned in this operating manual.
• The meter may only be opened if this is explicitly described in this operating
manual (example: Inserting the batteries).
ECHNICAL DATA, page 11).
1.2.3 Unauthorized use
The meter must not be put into operation if:
• it is visibly damaged (e.g. after being transported)
• it was stored under adverse conditions for a lengthy period of time (storing
conditions, see section 3 T
ECHNICAL DATA, page 11).
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MD 8000 H Overview
3
8000 H
MD
2
1
2 Overview
2.1 MD 8000 H meter
The MD 8000 H meter enables you to perform measurements (pH, U, conductivity, dissolved oxygen) ) quickly and reliably.
The MD 8000 H provides the maximum degree of operating comfort, reliability
and measuring certainty for all applications.
The MD 8000 H supports you in your work with the following functions:
Automatic sensor recognition
Data transmission via the USB interface (USB-B).
1 Keypad
2 Display
3 Connectors
2.2 Sensors
A measuring system ready to measure consists of the MD 8000 H meter and a
suitable sensor.
Suitable sensors are IDP pH sensors, IDP ORP sensors, IDP conductivity
sensors and IDP D.O. sensors.
2.2.1 IDP sensors
IDP sensors
support the automatic sensor recognition
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show only the settings relevant to the specific sensor in the setting menu
Overview MD 8000 H
process signals in the sensor digitally so that precise and interference-free
measurements are enabled even with long cables
facilitate to assign a sensor to a measured parameter with differently colored
couplings
have quick-lock couplings with which to fix the sensors to the meter.
Sensor data from
IDP sensors
IDP sensors transmit the following sensor data to the meter:
SENSOR ID
– Sensor name
– Sensor series number
Calibration data
Measurement settings
The calibration data are updated in the IDP sensor after each calibration procedure. A message is displayed while the data are being updated in the sensor.
In the measured value display, you can display the sensor name
and series number of the selected sensor with the [
i
] softkey. You
can then display further sensor data stored in the sensor with the
[More] softkey (see section 5.1.5 S
ENSOR INFO, page 17).
2.2.2 Automatic sensor recognition
The automatic sensor recognition for IDP sensors allows
to operate an IDP sensor with different meters without recalibrating
to assign measurement data to an IDP sensor
– Measurement datasets are always stored and output with the sensor
name and sensor series number.
to assign calibration data to an IDS sensor
– Calibration data and calibration history are always stored and output with
the sensor name and sensor series number.
to hide menus automatically that do not concern this sensor
To be able to use the automatic sensor recognition, a meter that supports the
automatic sensor recognition (e.g. MD 8000 H) and a digital IDP sensor are
required.
In digital IDP sensors, sensor data are stored that clearly identify the sensor.
The sensor data are automatically taken over by the meter.
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MD 8000 H Technical data
3 Technical data
3.1 Measuring ranges, resolution, accuracy
Measuring ranges,
accuracy
* Available only if a D.O. sensor is connected
Variable Measuring range Accuracy
Air pressure (absolute)*
Further data are given in the documentation of your sensor.
300 ... 1100 mbar ± 4 mbar
3.2 General data
Dimensions Approx. 180 x 80 x 55 mm
(7.09 x 3.15 x 2.17 inches)
Weight Approx. 0.4 kg (0.88 pounds)
Mechanical structure Type of protection IP 67
Electrical safety Protective class III
Test certificates CE
Ambient conditions Storage -25 °C ... +65 °C
Operation -10 °C ... +55 °C
Admissible relative
humidity
Power supply Batteries 4 x 1.5 V alkali-manganese batteries, type
Operational life Approx. 150 h*
* The operational life is shorter is the display illumination is switched on permanently
Yearly mean: < 75 %
30 days/year: 95 %
Other days: 85 %
AA
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Technical data MD 8000 H
USB interface (device) Type USB 1.1
USB-B (Device), PC
Baud rate Adjustable:
1200, 2400, 4800, 9600, 19200 Baud
Data bits 8
Stop bits 2
Parity None
Handshake RTS/CTS
Cable length max. 3 m (9.843 feet)
Guidelines
and norms used
EMC EC directive 2004/108/EC
EN 61326-1
EN 61000-3-2
EN 61000-3-3
FCC Class A
Meter safety EC directive 2006/95/EC
EN 61010-1
IP protection class EN 60529
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MD 8000 H Commissioning
4 Commissioning
4.1 Scope of delivery
Meter MD 8000 H
USB cable (A plug on mini B plug)
Short instructions
CD-ROM with
– USB drivers
– Comprehensive operating manual (6 languages)
– Software MultiLab Importer
4.2 Power supply
The MD 8000 H is supplied with power in the following ways:
Battery operation (4 batteries, 1.5 V Mignon type AA)
USB operation via a connected USB-B cable
4.3 Initial commissioning
Perform the following activities:
Insert the supplied batteries
Switch on the meter (see section 5.2 S
Set the date and time (see
section 5.4.5 E
23)
XAMPLE 2 ON NAVIGATION: SETTING THE DATE AND TIME, page
WITCHING ON THE METER, page 18)
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Commissioning MD 8000 H
2
1
4.3.1 Inserting the batteries
You can operate the meter either with normal batteries or with
rechargeable batteries (Ni-MH). In order to charge the batteries, an
external charging device is required.
1Screws
2 Battery compartment
1. Unscrew the screws (1) on the underside of the meter.
2. Open the battery compartment (2) on the underside of the meter.
CAUTION
Make sure that the poles of the batteries are positioned correctly.
± signs on the batteries must correspond to the ± signs in
The
the battery compartment.
3. Place four batteries (type Mignon AA) in the battery compartment.
4. Close the battery compartment.
5. Set the date and time
(see section 5.4.5 E
page 23).
XAMPLE 2 ON NAVIGATION: SETTING THE DATE AND TIME,
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MD 8000 H Operation
5Operation
5.1 General operating principles
5.1.1 Keypad
In this operating manual, keys are indicated by brackets <..> .
The key symbol (e.g.
release) in this operating manual.
A long keystroke (press and keep depressed for approx. 2 sec) is indicated by
the underscore behind the key symbol (e.g.
<OK>) generally indicates a short keystroke (press and
<OK_ >).
<F1>:
<F1__>:
Softkeys providing situation dependent functions, e.g.:
<F1>/[
i
]: View information on a sensor
<F2>:
<F2__>:
<On/Off>: Switches the meter on or off
<MODE>: Selects the measured parameter / Quits the settings
<CAL>:
<CAL__>:
<STR>:
<STR_ >:
<RCL>:
<RCL__ >:
<><>:
<__>< __>:
<OK>:
<OK_ >:
Calls up the calibration procedure
Displays the calibration data
Saves a measured value manually
Opens the menu for the automatic save function
Displays the manually stored measured values
Displays the automatically stored measured values
Menu control, navigation
Increments, decrements values
Increments, decrements values continuously
Opens the menu for measurement settings / confirms entries
Opens the menu for system settings
<HOLD> Freezes the measured value (HOLD function)
Switches the AutoRead measurement on or off
ba77219e01 11/2018 15
Operation MD 8000 H
3
2
1
4
5
7
HOLD AR
6
AutoCal TEC
i
01.11.2018
08:00
USB output
TEC
5.1.2 Display
Example (pH):
1 Status information (sensor)
2 Measured value
3 Measured parameter
4 Sensor symbol (calibration evaluation, calibration interval)
5 Measured temperature (with unit)
6 Status information (meter)
7 Softkeys and date + time
5.1.3 Status information (meter)
AR Stability control (AutoRead) is active
HOLD Measured value is frozen (
<HOLD> key)
Batteries are almost empty
Data are automatically output to the USB-B interface at
intervals
16 ba77219e01 11/2018
MD 8000 H Operation
3
1
2
25.0
7.007
pH
°C
01.11.2018
08:00
i
USB output
5.1.4 Socket field
1 IDP sensors: (pH, ORP, conductivity, D.O.)
2 USB B (device) interface
3 Service interface
CAUTION
Only connect sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current
circuit with current limiting).
VWR-IDP sensors meet these requirements.
5.1.5 Sensor info
You can display the current sensor data and sensor settings of a connected
sensor at any time. The sensor data are available in the measured value
display with the
1. In the measured value display:
Display the sensor data (sensor name, series number) with [
<F1>/[
i
] softkey.
<F1>
i
].
ba77219e01 11/2018 17
Operation MD 8000 H
25.0
7.007
pH
°C
More
01.11.2018
08:00
IDP 711
B09250001
pH resolution 0.001
mV resolution 0.1
Buffer TEC
Calibration interval 7d
Unit for slope mV/pH
Software version V1.00
IDP 711
B092500013
01.11.2018
08:00
Back
25.0
7.007
pH
°C
01.11.2018
08:00
i
USB output
2. Display further sensor data (settings) with <F1>/[More].
5.2 Switching on the meter
1. Switch the meter on with
The meter performs a self-test.
2. Connect the sensor.
The meter is ready to measure.
<On/Off>.
18 ba77219e01 11/2018
MD 8000 H Operation
5.3 Switching off the meter
1. Switch the meter off with
<On/Off>.
5.4 Navigation
5.4.1 Operating modes
Operating
mode
Measuring The measurement data of the connected sensor are shown
Calibration The course of a calibration with calibration information, func-
Storing in
memory
Transmitting data
Setting The system menu or a sensor menu with submenus, set-
Explanation
in the measured value display
tions and settings is displayed
The meter stores measuring data automatically or manually
The meter transmits measuring data and calibration records
to a USB-B interface automatically or manually.
tings and functions is displayed
5.4.2 Measured value display
In the measured value display, you can
open the menu for calibration and measurement settings with
keystroke)
open the system menu with the sensor-independent settings by pressing
<OK> (short
<OK>Storage & config for a <OK_ >long keystroke, approx. 2 s).
change the display in the selected measuring screen (e. g. pH ><− mV) by
pressing
5.4.3 Menus and dialogs
The menus for settings and dialogs in procedures contain further subelements.
The selection is done with the
played with a frame.
Submenus
The name of the submenu is displayed at the upper edge of the frame. Submenus are opened by confirming with
<MODE>.
<><> keys. The current selection is dis-
<OK>. Example:
ba77219e01 11/2018 19
Operation MD 8000 H
General
Interface
Clock function
Service information
Reset
System
01.11.2018
08:00
Back
Language: Deutsch
Audio signal: off
Illumination: on
Contrast: 12
Shutoff time: 1 h
Temperature unit: °C
Stability control
: on
General
01.11.2018
08:00
Back
Calibration record
Calibration data storage
Buffer: TEC
Single-point calibration: yes
Calibration interval: 7 d
Unit for slope: mV/pH
[
i
] 2.00 4.01 7.00 10.01 (25 °C) 4.00
7.00 10.00 (25 °C)
pH
01.11.2018
08:00
Back
Settings
Settings are indicated by a colon. The current setting is displayed on the
right-hand side. The setting mode is opened with
setting can be changed with
<><> and <OK>. Example:
<OK>. Subsequently, the
20 ba77219e01 11/2018
Functions
Functions are designated by the name of the function. They are immediately
carried out by confirming with
<OK>. Example: Display the Calibration
record function.
MD 8000 H Operation
Calibration record
Calibration data storage
Buffer: TEC
Single-point calibration: yes
Calibration interval: 7 d
Unit for slope: mV/pH
[
i
] 2.00 4.00 7.00 10.00 (25 °C)
pH
01.11.2018
08:00
Back
25.0
7.007
pH
°C
01.11.2018
08:00
i
USB output
Messages
Information is marked by the [
5.4.4 Navigation example 1:Setting the language
i
] symbol. It cannot be selected. Example:
1. Press the
The measured value display appears.
The instrument is in the measuring mode.
2. Using
The instrument is in the setting mode.
<On/Off> key.
<OK_ >, open the Storage & config menu.
ba77219e01 11/2018 21
Operation MD 8000 H
System
Data storage
Storage & config
01.11.2018
08:00
Back
General
Interface
Clock function
Service information
Reset
System
01.11.2018
08:00
Back
Language: Deutsch
Audio signal: off
Illumination: on
Contrast: 50 %
Shutoff time: 1 h
Temperature unit: °C
Stability control
: on
General
01.11.2018
08:00
Back
3. Select the System submenu with <><>.
The current selection is displayed with a frame.
4. Open the System submenu with
5. Select the General submenu with
<OK>.
<><>.
The current selection is displayed with a frame.
6. Open the General
submenu with <OK>.
22 ba77219e01 11/2018
7. Open the setting mode for the Language with
<OK>.
MD 8000 H Operation
Language: Deutsch
Audio signal: off
Illumination: on
Contrast: 50 %
Shutoff time: 1 h
Temperature unit: °C
General
01.11.2018
08:00
Back
8. Select the required language with
9. Confirm the setting with
<OK>.
<><>.
The meter switches to the measuring mode.
The selected language is active.
5.4.5 Example 2 on navigation: Setting the date and time
The meter has a clock with a date function. The date and time are indicated in
the status line of the measured value display.
When storing measured values and calibrating, the current date and time are
automatically stored as well.
The correct setting of the date and time and date format is important for the following functions and displays:
Current date and time
Calibration date
Identification of stored measured values.
Therefore, check the time at regular intervals.
Setting the date,
time and date format
ba77219e01 11/2018 23
The date and time are reset to default after a fall of the supply voltage (empty batteries).
The date format can be switched from the display of day, month, year
(dd.mm.yy) to the display of month, day, year (mm/dd/yy or mm.dd.yy).
1. In the measured value display:
Using
<OK_ >, open the Storage & config menu.
The instrument is in the setting mode.
2. Select and confirm the System / Clock function menu with
<><> and
<OK>.
The setting menu for the date and time opens up.
Operation MD 8000 H
Date format: dd.mm.yy
Date: 01.11.2018
Time: 14:53:40
Clock function
01.11.2018
08:00
Back
3. Select and confirm the Time menu with <><> and <OK>.
The hours are highlighted.
4. Change and confirm the setting with
<><> and <OK>.
The minutes are highlighted.
5. Change and confirm the setting with
<><> and <OK>.
The seconds are highlighted.
6. Change and confirm the setting with
<><> and <OK>.
The time is set.
7. If necessary, set the Date and Date format. The setting is made similarly
to that of the time.
8. To make further settings, switch to the next higher menu level with
<F1>.
or
Switch to the measured value display with
<MODE>.
The instrument is in the measuring mode.
24 ba77219e01 11/2018
MD 8000 H pH value
25.0
7.007
pH
°C
01.11.2018
08:00
i
USB output
6 pH value
6.1 Measuring
6.1.1 Measuring the pH value
NOTE
When connecting a grounded PC/printer, measurements cannot be
performed in grounded media as the values would be incorrect. The USB
interface is not galvanically isolated.
1. Connect the IDP pH sensor to the meter.
The pH measuring window is displayed.
2. If necessary, select the measured parameter with
3. Adjust the temperature of the solutions and measure the current temperature if the measurement is made without a temperature sensor.
4. If necessary, calibrate or check the IDP pH sensor.
5. Immerse the IDP pH sensor in the test sample.
<MODE>.
Stability control
(AutoRead)
& HOLD function
ba77219e01 11/2018 25
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproducibility of measured values.
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic Stability control is switched off.
You can start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see section 11.6.3 A
CONTROL, page 69) in the System menu.
1. Freeze the measured value with <HOLD>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
UTOMATIC STABILITY
pH value MD 8000 H
You can terminate the Stability control function and the HOLD func-
tion with
<HOLD> or <MODE> at any time.
2. Using
The [AR] status indicator appears while the measured value is
assessed as not stable. A progress bar is displayed and the display of
the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display
of the measured parameter stops flashing.
The current measurement data is output to the interface. Measurement
data meeting the stability control criterion is marked by AR.
3. Using
or
Release the frozen measured value again with
The [AR] status display disappears. The display switches back to the
previous indication.
<OK>, activate the Stability control function manually.
You can prematurely terminate the Stability control function manually with
maturely terminated, the current measurement data are output to
the interface without the AutoRead info.
<OK> at any time. If the Stability control function is pre-
<OK>, start a further measurement with stability control.
<HOLD> or <MODE>.
Criteria for a stable
measured value
The Stability control function checks whether the measured values are stable
within the monitored time interval.
Measured
parameter
pH value 15 seconds
Temperature 15 seconds
The minimum duration until a measured value is assessed as stable is the
monitored time interval. The actual duration is mostly longer.
6.1.2 Measuring the temperature
For reproducible pH measurements, it is essential to measure the temperature
of the test sample.
IDP sensors measure the temperature with a temperature sensor integrated in
the IDP sensor.
The display of the temperature indicates the active temperature measuring
Time interval Stability in the time inter-
val
∆ : better than 0.01 pH
∆ : better than 0.5 °C
26 ba77219e01 11/2018
MD 8000 H pH value
mode:
Temperature
sensor
Resolution of
the temp. dis-
Temp. measurement
play
yes 0.1 °C Automatic with temperature
sensor
- 1 °C Manual
6.2 pH calibration
6.2.1 Why calibrate?
pH electrodes age. This changes the zero point (asymmetry) and slope of the
pH electrode. As a result, an inexact measured value is displayed. Calibration
determines and stores the current values of the zero point and slope of the
electrode.
Thus, you should calibrate at regular intervals.
6.2.2 When do you have to calibrate?
Routinely within the framework of the company quality assurance
When the calibration interval has expired
6.2.3 Carrying out automatic calibration (AutoCal)
Make sure that in the sensor menu, Buffer menu, the buffer set is correctly
selected (see section 11.1.1 S
ETTINGS FOR PH MEASUREMENTS, page 61).
Use one to five buffer solutions of the selected buffer set in any order.
Below, calibration with Technical buffers (TEC) is described. When other buffer
sets are used, other nominal buffer values are displayed. Apart from that, the
procedure is identical.
If single-point calibration was set in the menu, the calibration procedure is automatically finished with the measurement of buffer solution 1 and the calibration record is displayed.
1. Connect the pH sensor to the meter.
The pH measuring window is displayed.
2. Keep the buffer solutions ready.
When measuring without temperature sensor:
Temper the buffer solutions or measure the current temperature.
3. Start the calibration with
<CAL>.
The calibration display for the first buffer appears (voltage display).
ba77219e01 11/2018 27
pH value MD 8000 H
pH 1
-180.0
24.8 °C
AutoCal TEC
01.11.2018
08:00
Buffer
mV
pH
-180.0
24.8 °C
AutoCal TEC
10.00
01.11.2018
08:00
AR
Buffer
mV
4. Thoroughly rinse the sensor with deionized water.
5. Immerse the sensor in the first buffer solution.
6. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
7. Wait for the end of the measurement with stability control or accept the
calibration value with
The calibration display for the next buffer appears (voltage display).
<OK>.
<OK>.
Continuing with two-
28 ba77219e01 11/2018
point calibration
8. If necessary, finish the calibration procedure as a single-point calibration with
The calibration record is displayed.
9. Thoroughly rinse the sensor with deionized water.
<MODE>.
For single-point calibration, the instrument uses the Nernst slope
(-59.2 mV/pH at 25 °C) and determines the zero point of the IDP
pH sensor.
MD 8000 H pH value
pH
0.0
24.8 °C
AutoCal TEC
7.00
01.11.2018
08:00
AR
Buffer
mV
10. Immerse the pH sensor in buffer solution 2.
11. When measuring without temperature sensor:
Enter the temperature of the buffer with
<><>.
12. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
13. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with
<OK>.
<OK>.
The calibration display for the next buffer appears (voltage display).
Continuing with
three- to five-point
calibration
14. If necessary, finish the calibration procedure as a two-point calibration
<MODE>.
with
The calibration record is displayed.
15. Thoroughly rinse the sensor with deionized water.
16. Immerse the sensor in the next buffer solution.
17. When measuring without temperature sensor:
Enter the temperature of the buffer with
18. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
<OK>.
<><>.
ba77219e01 11/2018 29
pH value MD 8000 H
pH
180.0
24.8 °C
AutoCal TEC
4.00
01.11.2018
08:00
AR
Buffer
mV
19. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with
<OK>.
The calibration display for the next buffer appears (voltage display).
20. If necessary, use
The calibration record is displayed.
or
Switch to calibration with the next buffer with
Calibration is automatically completed after the last buffer of a buffer set has been measured. Then the calibration record is displayed.
The calibration line is determined by linear regression.
6.2.4 Carrying out a manual calibration (AnyCal)
Make sure that in the sensor menu, Buffer menu, the AnyCal buffer set is
correctly selected (see section 11.1.1 S
61).
Use one to five buffer solutions in any order.
The pH values of the buffer solutions have to differ by at least one pH unit.
If single-point calibration was set in the menu, the calibration procedure is automatically finished with the measurement of buffer solution 1 and the calibration record is displayed.
<MODE> to finish the calibration.
<OK>.
ETTINGS FOR PH MEASUREMENTS, page
1. Connect the pH sensor to the meter.
The pH measuring window is displayed.
2. Keep the buffer solutions ready.
When measuring without temperature sensor:
Temper the buffer solutions or measure the current temperature.
3. Start the calibration with
The calibration display for the first buffer appears (voltage display).
<CAL>.
30 ba77219e01 11/2018
MD 8000 H pH value
pH
0.0
24.8 °C
AnyCal
1
01.11.2018
08:00
Buffer
mV
pH
0.0
24.8 °C
AnyCal
7.000
01.11.2018
08:00
Buffer
mV
AR
pH
7.000
24.8 °C
AnyCal
1
01.11.2018
08:00
Buffer
4. Thoroughly rinse the sensor with deionized water.
5. Immerse the pH sensor in buffer solution 1.
6. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
7. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with
<OK>.
The pH value of the buffer solution is displayed.
<OK>.
ba77219e01 11/2018 31
pH value MD 8000 H
pH
4.035
24.8 °C
AnyCal
2
01.11.2018
08:00
Buffer
8. Set the nominal buffer value for the measured temperature with
<><>.
Continuing with two-
point calibration
9. Accept the calibration value with
The calibration display for the next buffer appears (voltage display).
10. If necessary, finish the calibration procedure as a single-point calibration
<MODE>.
with
The calibration record is displayed.
For single-point calibration, the instrument uses the Nernst slope (-
59.2 mV/pH at 25 °C) and determines the zero point of the IDP pH
sensor.
11. Thoroughly rinse the sensor with deionized water.
12. Immerse the pH sensor in buffer solution 2.
13. When measuring without temperature sensor:
Enter the temperature of the buffer with
14. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
<OK>.
<><>.
<OK>.
15. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with
<OK>.
The pH value of the buffer solution is displayed.
16. Set the nominal buffer value for the measured temperature with
<><>.
17. Accept the calibration value with
The calibration display for the next buffer appears (voltage display).
<OK>.
32 ba77219e01 11/2018
MD 8000 H pH value
pH
9.958
24.8 °C
AnyCal
3
01.11.2018
08:00
Buffer
18. If necessary, finish the calibration procedure as a two-point calibration
with
<MODE>.
The calibration record is displayed.
Continuing with
three- to five-point
calibration
19. Thoroughly rinse the sensor with deionized water.
20. Immerse the sensor in the next buffer solution.
21. When measuring without temperature sensor:
Enter the temperature of the buffer with
22. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
23. Wait for the measurement with stability control to be completed or terminate the stability control and take over the calibration value with
<OK>.
<><>.
<OK>.
The pH value of the buffer solution is displayed.
24. Set the nominal buffer value for the measured temperature with
<>< >.
<OK>.
<OK>.
25. Accept the calibration value with
The calibration display for the next buffer appears (voltage display).
26. If necessary, use
The calibration record is displayed.
or
Continue calibrating using the next buffer with
After the fifth buffer has been measured the calibration is automatically finished. Then the calibration record is displayed.
The calibration line is determined by linear regression.
<MODE> to finish the calibration.
ba77219e01 11/2018 33
pH value MD 8000 H
6.2.5 Calibration points
Calibration can be performed using one to five buffer solutions in any order
(single-point to five-point calibration). The meter determines the following
values and calculates the calibration line as follows:
Calibration Determined
Displayed calibration data
values
1-point Asy Zero point = Asy
Slope = Nernst slope
(-59.2 mV/pH at 25 °C)
2-point Asy
Slp.
3-point to 5point
Asy
Slp.
Zero point = Asy
Slope = Slp.
Zero point = Asy
Slope = Slp.
The calibration line is calculated by
linear regression.
You can display the slope in the units, mV/pH or % (see section
11.1.1 S
ETTINGS FOR PH MEASUREMENTS, page 61).
6.2.6 Calibration data
Displays the calibra-
tion data
The calibration record is automatically transmitted to the interface
after calibrating.
The calibration protocol of the last calibration is available in the menu Calibra-
tion / Calibration record. To open it in the measured value display, press the
<CAL__> key.
The calibration records of the last 10 calibrations are available in the menu Calibration / Calibration data storage / Display. To open the Calibration menu in the
measured value display, press the
<OK> key.
34 ba77219e01 11/2018
MD 8000 H pH value
Menu item Setting/
function
Calibration /
Calibration data storage / Display
Calibration /
Calibration data storage / Output to
RS232/USB
- Displays the calibration records.
- Outputs the calibration data storage
Explanation
Further options:
Scroll through the calibration
records with
Output the displayed calibration
record to the interface with
[USB output].
Output all calibration records to
the interface with
output].
Quit the display with
[Zurück] or
Switch directly to the measured
value display with
to the interface
<><>.
<F2>/
<F2__>[USB
<F1>/
<OK>.
<MODE>.
Calibration evalua-
tion
After calibrating, the meter automatically evaluates the calibration. The zero
point and slope are evaluated separately. The worse evaluation of both is taken
into account. The evaluation appears on the display and in the calibration
record.
Display Calibration
record
+++
++
+
-
Zero point
[mV]
-15 ... +15 -60,5 ... -58,0
-20 ... <-15
or
>+15 ... +20
-25 ... <-20
or
>+20 ... +25
-30 ... <-25
or
->+25 ... +30
Slope [mV/pH]
>-58.0 ... -57.0
-61.0 ... <-60.5
or
>-57.0 ... -56.0
-62.0 ... <-61.0
or
>-56.0 ... -50.0
Clean the IDP sensor according to the sensor operating manual
ba77219e01 11/2018 35
pH value MD 8000 H
MD 8000 H
Ser. no. 11292113
CALIBRATIONpH
01.11.2018 15:55
Ser. no. 10501234
TEC
Buffer 1 10.00
Buffer 2 7.00
Buffer 3 4.00
Voltage 1 -177.0 mV
Voltage 2 3.0 mV
Voltage 3 184.0 mV
Temperatur 1 24.0 °C
Temperatur 2 24.0 °C
Temperatur 3 24.0 °C
Slope -60.2 mV/pH
Asymmetry 4.0 mV
Sensor +++
etc...
Calibration record
(USB output)
Display Calibration
record
Error Error
Error elimination (see section 15 W
Zero point
Slope [mV/pH]
[mV]
<-30
or
>+30
HAT TO DO IF..., page 83)
<-62.0
or
> -50,0
36 ba77219e01 11/2018
MD 8000 H ORP
U
157.0 mV
24.8 °C
01.11.2018
08:00
i
USB output
7ORP
7.1 Measuring
7.1.1 Measuring the ORP
NOTE
When connecting a grounded PC/printer, measurements cannot be
performed in grounded media as the values would be incorrect. The USB
interface is not galvanically isolated.
IDP ORP sensors are not calibrated. However, you can check IDP
ORP sensors using a test solution.
1. Connect the ORP sensor to the meter.
The ORP measuring window is displayed.
Stability control
(AutoRead)
& HOLD function
2. Adjust the temperature of the solutions and measure the current temperature if the measurement is made without a temperature sensor.
3. Temper the test solution or measure the current temperature.
4. Check the meter with the ORP sensor.
5. Immerse the ORP sensor in the test sample.
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproducibility of measured values.
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic Stability control is switched off.
You can start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see section 11.6.3 A
UTOMATIC STABILITY
ba77219e01 11/2018 37
ORP MD 8000 H
CONTROL, page 69) in the System menu.
1. Freeze the measured value with
The [HOLD] status indicator is displayed.
The HOLD function is active.
You can terminate the Stability control function and the HOLD func-
tion with
2. Using
The [AR] status indicator appears while the measured value is
assessed as not stable. A progress bar is displayed and the display of
the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display
of the measured parameter stops flashing.
The current measurement data is output to the interface. Measurement
data meeting the stability control criterion is marked by AR.
<OK>, activate the Stability control function manually.
You can prematurely terminate the Stability control function manually with
maturely terminated, the current measurement data are output to
the interface without the AutoRead info.
<HOLD> or <MODE> at any time.
<OK> at any time. If the Stability control function is pre-
<HOLD>.
Criteria for a stable
measured value
3. Using
or
Release the frozen measured value again with
The [AR] status display disappears. The display switches back to the
previous indication.
The Stability control function checks whether the measured values are stable
within the monitored time interval.
Measured
parameter
ORP 15 seconds
Temperature 15 seconds
The minimum duration until a measured value is assessed as stable is the
monitored time interval. The actual duration is mostly longer.
7.1.2 Measuring the temperature
For reproducible ORP measurements, it is essential to measure the temperature of the test sample.
<OK>, start a further measurement with stability control.
<HOLD> or <MODE>.
Time interval Stability in the time
interval
∆ : better than 0.3 mV
∆ : better than 0.5 °C
When operating a sensor without integrated temperature sensor, you first have
38 ba77219e01 11/2018
MD 8000 H ORP
to measure and enter the temperature of the sample.
The measuring instrument recognizes whether a suitable sensor is connected
and automatically switches on the temperature measurement.
The display of the temperature indicates the active temperature measuring
mode:
Temperature
sensor
Resolution of the
temp. display
Temp. measurement
yes 0.1 °C Automatic with temperature
sensor
- 1 °C Manual
7.2 ORP calibration
ORP electrodes are not calibrated. You can, however, check ORP
electrodes by measuring the ORP of a test solution and comparing
the value with the nominal value.
ba77219e01 11/2018 39
Dissolved oxygen MD 8000 H
O
2
mg/l
7.92
25.0
°C
01.11.2018
08:00
i
USB output
8 Dissolved oxygen
8.1 Measuring
8.1.1 Measuring D.O.
1. Connect the D.O. sensor to the meter.
The D.O. measuring screen is displayed.
Selecting the
displayed
measured parameter
2. If necessary, select the measured parameter with
3. Check or calibrate the meter with the sensor.
4. Immerse the D.O. sensor in the test sample.
You can switch between the following displays with
D.O. concentration [mg/l]
D.O. saturation [%]
<MODE>:
<MODE>.
40 ba77219e01 11/2018
D.O. partial pressure [mbar].
Salinity correction When measuring the D.O. concentration [mg/l] of solutions with a salt content
of more than 1 g/l , a salinity correction is required. For this, you have to measure and input the salinity of the measured medium first.
When the salinity correction is switched on, the [Sal] indicator is displayed in
the measuring screen.
You can switch the salinity correction on or off and enter the salinity
in the menu for calibration and measurement settings (see section
ETTINGS FOR D.O. SENSORS (MENU FOR MEASUREMENT AND
11.3.1 S
CALIBRATION SETTINGS), page 63).
MD 8000 H Dissolved oxygen
Air pressure
correction
(Saturation, local
function)
Stability control
(AutoRead)
& HOLD function
The integrated air pressure sensor of the MD 8000 H measures the current air
pressure. During calibration, the air pressure correction function is automatically activated. While the parameter oxygen saturation [%] is displayed, the air
pressure correction is applied if the Saturation, local function is active.
The air pressure correction (function Saturation, local) is switched
on or off in the menu for calibration and measurement settings (see
section 11.3.1 S
MENT AND CALIBRATION SETTINGS), page 63).
ETTINGS FOR D.O. SENSORS (MENU FOR MEASURE-
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproducibility of measured values.
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic Stability control is switched off.
Irrespective of the setting for automatic Stability control (see section 11.6.3
A
UTOMATIC STABILITY CONTROL, page 69) in the System menu, you can start a
measurement with Stability control manually at any time.
Hold function
Stability control
To start the Stability control function manually, the HOLD function must be
active.
1. Freeze the measured value with <HOLD>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
You can terminate the HOLD function and the Stability control func-
tion with
<HOLD> or <MODE> at any time.
2. Using <OK>, activate the Stability control function manually.
The [AR] status indicator appears while the measured value is assessed
as not stable. A progress bar is displayed and the display of the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable measured
value is recognized. The progress bar disappears, the display of the measured parameter stops flashing and a beep sounds.
The current measurement data is output to the interface. Measurement
data meeting the stability control criterion is marked by AR.
ba77219e01 11/2018 41
Dissolved oxygen MD 8000 H
You can prematurely terminate the Stability control function manually with
<OK> at any time. If the Stability control function is pre-
maturely terminated, the current measurement data are output to
the interface without the AutoRead info.
Criteria for a stable
measured value
3. Using
You can switch off the beep (see section 11.6 S
DENT SETTINGS, page 68).
<OK>, start a further measurement with stability control.
ENSOR-INDEPEN-
or
Release the frozen measured value again with
<HOLD> or <MODE>.
The [AR] status display disappears. The display switches back to the
previous indication.
The Stability control function checks whether the measured values are stable
within the monitored time interval.
Measured parameter Time interval Stability in the time
interval
D.O. concentration 20 seconds
D.O. saturation 20 seconds
Temperature 15 seconds
∆ : better than 0.03 mg/l
∆ : better than 0.4 %
∆ : better than 0.5 °C
The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.
8.1.2 Measuring the temperature
For reproducible D.O. measurements, it is essential to measure the temperature of the test sample.
D.O. sensors measure the temperature with a temperature sensor integrated
in the sensor.
8.2 Calibration
8.2.1 Why calibrate?
D.O. sensors age. Aging changes the zero point and slope of the D.O. sensor.
As a result, an inexact measured value is displayed. Calibration determines
and stores the current values of the zero point and slope.
8.2.2 When to calibrate?
When the calibration interval has expired
When your accuracy requirements are especially high
Routinely within the framework of the company quality assurance
42 ba77219e01 11/2018
MD 8000 H Dissolved oxygen
O
2
99.8 %
25.1
°C
Cal
01.11.2018
08:00
DO Sat
8.2.3 Calibration procedures
The MD 8000 H provides 2 calibration procedures:
Calibration in water vapor-saturated air.
Calibration via a comparison measurement (e.g. Winkler titration according
to DIN EN 25813 or ISO 5813). At the same time, the relative slope is
adapted to the comparison measurement by a correction factor. When the
correction multiplier is active, the [Factor] indicator appears in the measuring
window.
For both calibration procedures, an additional Zero point calibration
is possible (see section 8.2.6 Z
8.2.4 Calibration in water vapor-saturated air
ERO POINT CALIBRATION, page 45).
For this calibration procedure, the Comparison meas. setting must be set to off
in the Calibration menu.
As the calibration vessel use a BOD bottle that contains a small amount of
clean water (approx. 40 ml). The sensor must not be immersed in the water.
Proceed as follows to calibrate the D.O. sensor:
1. Connect the D.O. sensor to the meter.
2. Put the D.O. sensor into the calibration vessel.
Leave the sensor in the calibration vessel long enough (at least 15
minutes) until the air is saturated with water vapor and the sensor
is adapted to the ambient temperature.
3. Start the calibration with
<CAL>.
ba77219e01 11/2018 43
Dissolved oxygen MD 8000 H
O
2
7.92
mg/l
25.1
°C
Compare
01.11.2018
08:00
DO Adjust
4. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
5. Wait for the measurement with stability control to be finished (beep,
[HOLD][AR] status indicator).
The calibration record is displayed and output to the interface.
6. Switch to the measured value display with
8.2.5 Calibrating with Comparison meas. (e.g. Winkler titration)
With the calibration procedure Comparison meas., the measured value of the
sensor is adjusted to the nominal value of a comparison solution with a correction factor. The current correction factor is documented in the sensor menu (
Factor = x.xxx) and in the calibration record.
For this calibration procedure, the Comparison meas. setting must be set to on
in the Calibration menu.
Proceed as follows to calibrate the D.O. sensor:
<OK>.
<F1>/[continue].
i
1. Connect the D.O. sensor to the meter.
2. Immerse the D.O. sensor in the reference solution.
3. Start the calibration with
4. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
<CAL>.
<OK>.
5. Wait for the measurement with stability control to be finished (beep,
44 ba77219e01 11/2018
[HOLD][AR] status indicator).
MD 8000 H Dissolved oxygen
O
2
7.92
mg/l
20.3°C
Compare
01.11.2018
08:00
DO Adjust
6. Using
sured value to the nominal value (value of the comparison measurement). Then take over the adjustment with
The meter switches to the measured value display.
The status display [Factor] is active.
8.2.6 Zero point calibration
With a Zero point calibration, the zero point of the sensor is redetermined by
calibrating in a zero solution.
For most applications, an additional Zero point calibration is not required and
not recommended. Only with very rare applications can the accuracy of a calibration be improved if a Zero point calibration was carried out before.
The zero point calibration is best done prior to calibrating with a calibration
procedure (e.g. calibration in water vapor-saturated air or calibration via
comparison measurement)..
1. Connect the D.O. sensor to the meter.
<><>, set the correction factor to adjust the displayed mea-
<OK>.
2. Place the D.O. sensor in a solution that does not contain any dissolved
oxygen.
A solution not containing any dissolved oxygen can be prepared by
) in 500 ml tap-
2SO3
<OK> / Calibra-
dissolving approx. 8 to 10 g sodium sulfite (Na
water. Carefully mix the solution. It may take up to 60 minutes until
the solution is free of oxygen.
3. In the menu for measurement and calibration settings (
tion / Zero point calibration), start the Zero point calibration.
The calibration point for the measured value 0 (DO Zero) is displayed.
ba77219e01 11/2018 45
Dissolved oxygen MD 8000 H
O
2
0.9
%
Cal
01.11.2018
08:00
25.1°C
DO Zero
4. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
5. Wait for the measurement with stability control to be finished (beep,
[HOLD][AR] status indicator).
The current value is set to zero.
The calibration record is displayed.
6. Switch to the measured value display with
The zero point is calibrated.
The [ZeroCal] status indicator is displayed.
7. Carry out a calibration (see section 8.2.3 C
page 43).
8.2.7 Calibration data
The calibration record is automatically transmitted to the interface
after calibrating.
<OK>.
<F1>/[continue].
ALIBRATION PROCEDURES,
Displaying the cali-
bration record
The calibration protocol of the last calibration is available in the menu Calibration / Calibration record. To open it in the measured value display, press the
<CAL__> key.
The calibration records of the last calibrations are available in the menu Calibration / Calibration data storage / Display. To open the Calibration menu in the
measured value display, press the
<OK> key.
46 ba77219e01 11/2018
MD 8000 H Dissolved oxygen
CALIBRATION Ox
01.11.2018 07:43:33
OPOX 11-3
Ser. no. 12B100016
OPOX 11 Cap 12B100015
Sensor +++
Menu item Setting/
function
Calibration /
- Displays the calibration records.
Calibration data storage / Display
Calibration /
- Outputs the calibration data stor-
Calibration data storage / Output to
RS232/USB
Explanation
Further options:
Scroll through the calibration
records with
<><>.
Output the displayed calibra-
tion record to the interface with
<F2>/[USB output].
Output all calibration records to
the interface with
<F2__>[USB output].
Quit the display with
[Zurück] or
<OK>.
Switch directly to the mea-
sured value display with
<F1>/
<MODE>.
age to the interface
Calibration evalua-
tion
Calibration
evaluationOPOX 11-
Calibration record
(USB output)
After calibration, the meter automatically evaluates the current status of the calibration. The evaluation appears on the display and in the calibration record.
Display Calibration record
3
+++
Error Error
Error elimination (see section 15 W
HAT TO DO IF..., page 83)
ba77219e01 11/2018 47
Conductivity MD 8000 H
μS/cm
[Tr25][nLF][ 0.475 1/cm]
1417
25.0
°C
01.11.2018
08:00
i
USB output
9 Conductivity
9.1 Measuring
9.1.1 Measuring the conductivity
NOTE
When connecting a grounded PC/printer, measurements cannot be
performed in grounded media as the values would be incorrect. The USB
interface is not galvanically isolated.
1. Connect the conductivity sensor to the meter.
The conductivity measuring window is displayed.
The measuring cell and cell constant for the connected IDP conductivity
sensor are automatically taken over.
Selecting the
displayed
measured parameter
2. If necessary, press
3. Immerse the conductivity sensor in the test sample.
You can switch between the following displays with
Conductivity [μS/cm] / [mS/cm]
Resistivity [Ω·cm] / [kΩ·cm] / [MΩ·cm]
<MODE> to select the measured parameter ϰ.
<M>:
Stability control
& HOLD function
48 ba77219e01 11/2018
(AutoRead)
Salinity Sal [ ] (
Total dissolved solids TDS [mg/l] / [g/l]
The factor to calculate the total dissolved solids is set to 1.00 in the factory. You
can adjust this factor to meet your requirements in the range 0.40 ... 1.00. The
factor is set in the menu for the parameter, TDS.
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproducibility of measured values.
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic Stability control is switched off.
≙ psu)
MD 8000 H Conductivity
You can start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see section 11.6.3 A
CONTROL, page 69) in the System menu.
UTOMATIC STABILITY
1. Freeze the measured value with
<HOLD>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
You can terminate the Stability control function and the HOLD func-
2. Using
tion with
<OK>, activate the Stability control function manually.
<HOLD> or <MODE> at any time.
The [AR] status indicator appears while the measured value is assessed
as not stable. A progress bar is displayed and the display of the measured
parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable measured
value is recognized. The progress bar disappears and the display of the
measured parameter stops flashing.
The current measurement data is output to the interface. Measurement
data meeting the stability control criterion is marked by AR.
You can prematurely terminate the Stability control function manually with
<OK> at any time. If the Stability control function is pre-
maturely terminated, the current measurement data are output to
the interface without the AutoRead info.
Criteria for a stable
measured value
3. Using
<OK>, start a further measurement with stability control.
or
Release the frozen measured value again with
<HOLD> or <MODE>.
The [AR] status display disappears. The display switches back to the previous indication.
The Stability control function checks whether the measured values are stable
within the monitored time interval.
Measured
Time interval Stability in the time interval
parameter
Conductivity ϰ 10 seconds
∆ ϰ: better than 1.0% of measured
value
Temperature 15 seconds
∆ : better than 0.5 °C
The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.
ba77219e01 11/2018 49
Conductivity MD 8000 H
9.1.2 Measuring the temperature
For reproducible conductivity measurements, it is essential to measure the
temperature of the test sample.
IDP sensors measure the temperature with a temperature sensor integrated in
the IDP sensor.
9.2 Temperature compensation
The calculation of the temperature compensation is based on the preset reference temperature, 20 °C or 25 °C. It appears on the display as Tr20 or Tr25.
You can select one of the following temperature compensation methods:
Nonlinear temperature compensation (nLF) according to EN 27 888
Linear temperature compensation (lin) with adjustable coefficients of
0.000 ... 3.000 %
No temperature compensation (off)
/K
The reference temperature and temperature compensation are set
in the menu for the parameter, conductivity (see section 11.4.1
ETTINGS FOR IDP CONDUCTIVITY SENSORS, page 65).
S
Application tips Select the following temperature compensations given in the table according to
the respective test sample:
Test sample Temperature compensation Display
Natural water
(ground water, surface
water, drinking water)
Ultrapure water nLF
Other aqueous solutions
Salinity (seawater) Automatic nLF according to
nLF
according to EN 27 888
according to EN 27 888
Lin Set linear
temperature coefficient
0.000 ... 10.000 %/K
IOT (International Oceanographic Tables)
nLF
nLF
Lin
Sal, nLF
9.3 Calibration
9.3.1 Why calibrate?
Aging slightly changes the cell constant, e. g. due to coatings. As a result, an
inexact measured value is displayed. The original characteristics of the cell can
often be restored by cleaning the cell. Calibration determines the current value
50 ba77219e01 11/2018
MD 8000 H Conductivity
1/cm
0.475
25.0
°C
01.11.2018
08:00
of the cell constant and stores this value in the meter.
Thus, you should calibrate at regular intervals.
9.3.2 When to calibrate?
After connecting a sensor
Routinely within the framework of the company quality assurance
When the cleaning interval has expired
9.3.3 Determining the cell constant (calibration in control standard)
You can determine the actual cell constant of the IDP conductivity sensor by
calibrating with the control standard in the following range:
0.450 cm
The cell constant is determined in the control standard, 0.01 mol/l KCl.
-1
... 0.500 cm-1 (e.g. IDP 761-C, nominal cell constant 0.475 cm-1)
In the default condition, the calibrated cell constant of the IDP sensor is set to
0.475 cm
For this calibration procedure, the Type setting must be set to cal. Proceed as
follows to determine the cell constant:
1. Connect the conductivity sensor to the meter.
2. In the measured value display, select the conductivity parameter with
-1
(IDP conductivity sensor IDP 761-C).
<M>.
3. Start the calibration with
The cell constant that was calibrated last is displayed.
<CAL>.
4. Immerse the conductivity sensor in the control standard solution,
0.01 mol/l KCI.
ba77219e01 11/2018 51
Conductivity MD 8000 H
Displaying the cali-
bration record
5. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter
flashes.
6. Wait for the end of the measurement with stability control ([HOLD][AR])
status indicator or
take over the calibrated value with
The calibration record is displayed and output to the interface.
7. Switch to the measured value display with
9.3.4 Calibration data
The calibration record is automatically transmitted to the interface
after calibrating.
The calibration data can be displayed and then output to the interface.
The calibration protocol of the last calibration is available in the menu Calibra-
tion / Calibration record. To open it in the measured value display, press the
<OK>.
<OK>.
<OK>.
<CAL__> key.
The calibration records of the last 10 calibrations are available in the menu Calibration / Calibration data storage / Display. To open the Calibration menu in the
measured value display, press the
Menu item Setting/
function
Calibration /
Calibration data
storage / Display
- Displays the calibration records.
<OK> key.
Explanation
Further options:
Scroll through the calibration
records with
Output the displayed calibration
record to the interface with
<><>.
<F2>/[USB output].
Output all calibration records to
the interface with
output].
Quit the display with
[Zurück] or
Switch directly to the measured
value display with
<OK>.
<F2__>[USB
<F1>/
<MODE>.
Calibration /
Calibration data
storage / Output to
RS232/USB
52 ba77219e01 11/2018
- Outputs the calibration data storage
to the interface
MD 8000 H Conductivity
CALIBRATION Cond
01.11.2018 07:43:33
IDP 761-C
Ser. no. 09250033
Cell constant 0.476 1/cm 25.0 °C
Sensor +++
Calibration evalua-
tion
Calibration record
(USB output)
After calibration, the meter automatically evaluates the current status of the calibration. The evaluation appears on the display and in the calibration record.
Display Calibration record Cell constant [cm-1]
+++ Within the range
0.450 ... 0.500 cm
-1
Error Error Outside the range
0.450 ... 0.500 cm
-1
Error elimination (see section 15
W
HAT TO DO IF..., page 83)
ba77219e01 11/2018 53
Turbidity measurement (VisoTurb®900-P) MD 8000 H
10 Turbidity measurement (VisoTurb®900-P)
10.1 Measuring
10.1.1 Measuring the turbidity
The sensor connection and the USB-B (device) interface are galvanically insulated. This facilitates interference-free measurements
also in the following cases:
Measurement in grounded test samples
Measurement with several sensors connected to one
MD 8000 H in one test sample
Preparatory activi-
ties
Perform the following preparatory activities when you want to measure:
Avoid gas bubbles (e.g. air bubbles) in the test sample.
Use suitable vessels for measurement and calibration
(see operating manual of the VisoTurb
Heed the minimum depth of immersion for the sensor
1. Connect a turbidity sensor to the measuring instrument.
The turbidity measuring screen is displayed.
The data for the connected IDS turbidity sensor are automatically taken
over.
2. Fill the test sample into a lightproof measuring beaker up to a level of
at least 6 cm.
3. When immersing the sensor in the test sample, hold the sensor at an
angle.
4. For measuring, position the sensor upright.
5. Position the sensor in a way that meets the following requirements.
Distance to the bottom: 6 cm
Distance to the walls of the beaker: 2 cm
®
900-P sensor).
Minimum depth of immersion: 2 cm
To position the sensor optimally and permanently while it is measuring, fix it on a support.
Measuring You can carry out turbidity measurements as follows:
1. Perform the preparatory activities.
2. Immerse the sensor in the test sample at an angle and then position it
in the measuring container.
54 ba77219e01 11/2018
MD 8000 H Turbidity measurement (VisoTurb®900-P)
TRB
FNU
7.92
01.02.2014
08:00
i
USB output
Selecting the
displayed
measured parameter
Freezes the mea-
sured value (HOLD
function)
Stability control
(AutoRead )
You can switch between the following displays with <M>:
Turbidity [FNU]
Turbidity [NTU]
With the HOLD function, you can freeze the current measured value. The displayed measured value stops changing until you switch the HOLD function off.
1. Freeze the measured value with <HOLD>.
The [HOLD] status indicator is displayed.
If the HOLD function is active, you can, e.g. start a manual measurement with stability control.
2. Release the frozen measured value again with
The HOLD function is switched off.
The [HOLD] status display disappears.
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproducibility of measured values. The display of the measured parameter flashes until
a stable measured value is available.
<HOLD>.
You can start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see section 11.6.3 A
CONTROL, page 69) in the System menu.
1. Freeze the measured value with <HOLD>.
The [HOLD] status indicator is displayed.
UTOMATIC STABILITY
ba77219e01 11/2018 55
Turbidity measurement (VisoTurb®900-P) MD 8000 H
2. Using
The [AR] status indicator appears while the measured value is
assessed as not stable. A progress bar is displayed and the display of
the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display of the measured parameter stops flashing.
The current measurement data is output to the interface. Measurement
data meeting the stability control criterion is marked by AR.
You can prematurely terminate the Stability control function
manually with
function is prematurely terminated, the current measurement data are output to the interface without the AutoRead
info.
3. Using
or
Release the frozen measured value again with
The display switches to the measured value display.
The [AR][HOLD] status display disappears.
<OK>, activate the Stability control function manually.
<OK> at any time. If the Stability control
<OK>, start a further measurement with Stability control.
<HOLD>.
Criteria for a stable
measured value
The Stability control function checks whether the measured values are stable
within the monitored time interval.
Measured parameter
Turbidity
(FNU/NTU)
The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.
Time interval Stability in the time inter-
val
15 seconds
∆ : better than
1.0% of measured value
10.2 Calibration
10.2.1 Why calibrate?
The calibration line of the sensor is determined and stored through calibrating.
10.2.2 When to calibrate?
When the calibration interval has expired
At regular intervals
10.2.3 Calibration standards
Calibrate with 1 to 3 turbidity standard solutions. The standard solutions must
56 ba77219e01 11/2018
MD 8000 H Turbidity measurement (VisoTurb®900-P)
be selected in the following order.
Standard solution Range (FNU/NTU)
1 0.0 ... 1.0
2 5.0 ... 200.0
3 200.0 ... 4000.0
The turbidity expected in the measurement dictates the number and selection
of the standards. Calibration has to be carried out for the range with the highest
turbidity to be expected and for all lower ranges. The standard solutions for this
have to be selected in ascending order, starting with standard 1.
Example: If you expect turbidity values in the range 200 ... 4000 FNU/NTU, you have to
carry out a 3-point calibration.
The measurement precision is also dependent on the selected standard solutions. Therefore, the selected standard solutions should cover the value range
expected of the turbidity measurement.
If the measured turbidity is outside the measurement range, OFL is displayed.
As the standard with turbidity value 0.0 FNU you can use clean tap
water or filtered, deionized water in a suitable calibration vessel,
depending on the required quality (see operating manual of the
sensor VisoTurb
®
900-P). This standard should be freshly
prepared prior to every calibration.
Standards with turbidity values for the calibration ranges 2 and 3
are available as accessories (see operating manual of the sensor
VisoTurb
®
900-P). Calibration can be carried out in the bottles the
standards are delivered in. The standards can be used several
times within their shelf life.
Replace the standards solutions if you have any doubts concerning
their quality or after the expiration date.
10.2.4 Carry out calibration
1. Perform the preparatory activities.
2. Connect the turbidity sensor to the measuring instrument.
The turbidity measuring screen is displayed.
3. Keep the standard solutions ready in suitable calibration vessels.
4. In the measured value display, select the TRB measuring window with
<><> and <MODE>.
5. Start the calibration with
The calibration display appears.
ba77219e01 11/2018 57
<CAL>.
Turbidity measurement (VisoTurb®900-P) MD 8000 H
TRB
0.2
01.07.2011
08:00
FNU
000.0 FNU
Cal
Standard
1
TRB
0.0
01.07.2011
08:00
FNU
124.0 FNU
Cal
Standard
2
6. Thoroughly rinse the turbidity sensor with distilled water and dry it with
a lint-free cloth.
7. Immerse the turbidity sensor in the test sample at an angle.
8. Position the turbidity sensor in the measuring vessel.
Continuing with two-
point calibration
9. Use
10. Wait for the end of the AutoRead measurement.
11. Thoroughly rinse the turbidity sensor with distilled water and dry it with
<><> and <> to set the concentration of the standard solu-
tion for each digit and confirm with
The standard solution is measured.
The measured value is checked for stability (AutoRead).
The calibration display for the next standard solution appears.
a lint-free cloth.
<OK>.
12. Immerse the turbidity sensor in the test sample at an angle.
13. Position the turbidity sensor in the measuring vessel.
14. Use
58 ba77219e01 11/2018
15. Wait for the end of the AutoRead measurement.
<><> and <> to set the concentration of the standard solu-
tion for each digit and confirm with
The standard solution is measured.
The measured value is checked for stability (AutoRead).
The calibration display for the next standard solution appears.
<OK>.
MD 8000 H Turbidity measurement (VisoTurb®900-P)
TRB
124.0
01.07.2011
08:00
FNU
1010.0 FNU
Cal
Standard
3
16. If necessary, terminate the calibration as a two-point calibration with
<MODE>.
The new calibration values are displayed.
or
Continue with three-point calibration.
Continuing with
three-point calibra-
tion
Displays the calibra-
tion data
Repeat the steps 11 to 15 with the third standard solution. The new calibration
values are displayed after the last calibration step was completed.
10.2.5 Calibration data
Calibration The calibration protocol of the last calibration is available in the
<OK> / Calibration record. To open it in the measured value display,
menu
press the
The calibration records of the last 10 calibrations are available in the menu Cali-
bration / Calibration data storage / Display. To open the Calibration menu in the
measured value display, press the
<CAL__> key.
<OK> key.
ba77219e01 11/2018 59
Turbidity measurement (VisoTurb®900-P) MD 8000 H
CALIBRATION TRB:
18.09.2014 08:09:10
VisoTurb 900-P
Ser. no. 14E999003
# 1 0.0 FNU
# 2 124.0 FNU
Sensor +++
_____________________________________
Menu item Setting/
function
Calibration /
- Displays the calibration record.
Calibration data
storage / Display
Calibration /
- Outputs the calibration records to
Calibration data
storage / Output to
RS232/USB
Explanation
Further options:
Scroll through the calibration
records with
<><>.
Output the displayed calibration
record to the interface with
<PRT>.
Output all calibration records to
the interface with
Quit the display with
<PRT_>.
<ESC> or
<OK>.
Switch directly to the measured
value display with
the interface.
<MODE>.
Calibration evalua-
tion
Calibration record
(USB output)
After calibrating, the meter automatically evaluates the calibration.
Display Calibration record Explanation
+++ Optimum calibration
Good calibration
60 ba77219e01 11/2018
MD 8000 H Settings
11 Settings
11.1 pH measurement settings
11.1.1 Settings for pH measurements
Settings The settings are made in the menu for calibration and measurement settings of
the pH/ORP measurement. To open the settings, display the required measured parameter in the measured value display and press the
completing the settings, switch to the measured value display with
Default settings are printed in bold.
<OK> key. After
<MODE>.
Menu item Possible
setting
Calibration /
- Displays the calibration record of the last calibration.
Calibration record
Calibration /
- Displays the last calibration records (max. 10)
Calibration data storage / Display
Calibration /
- Outputs the calibration data storage to the interface
Calibration data storage / Output to
RS232/USB
Calibration / Buffer TEC
AnyCal
NIST/DIN
...
Calibration / Singlepoint calibration
Calibration /
yes
no
1 ... 7 ... 999 dCalibration interval for the IDPpH sensor (in days).
Calibration interval
Explanation
Buffer sets to be used for pH calibration.
More buffers and details: see section 11.1.2 B
FOR CALIBRATION, page 62 and section 6.2 PH CALIBRATION,
UFFER SETS
page 27.
Quick calibration with 1 buffer
The meter reminds you to calibrate regularly by the flashing
sensor symbol in the measuring screen.
Calibration / Unit for
slope
mV/pH
%
Unit of the slope.
The % display refers to the Nernst slope of
-59.2 mV/pH (100 x determined slope/Nernst slope).
pH resolution 0.001
Resolution of the pH display
0.01
0.1
mV resolution 0.1
Resolution of the mV display
1
Reset - Resets all sensor settings to the delivery condition (see sec-
tion 11.7.1 R
ESETTING THE MEASUREMENT SETTINGS, page
70).
ba77219e01 11/2018 61
Settings MD 8000 H
11.1.2 Buffer sets for calibration
You can use the buffer sets quoted in the table for an automatic calibration. The
pH values are valid for the specified temperature values. The temperature
dependence of the pH values is taken into consideration during the calibration.
No. Buffer set * pH values at
1
TEC
Technical buffers
2 AnyCal
3
NIST/DIN
DIN buffers according to DIN
19266 and NIST Traceable
Buffers
4
TEC 2
Technical buffers
5
6
Merck 1* 4.000
Merck 2 * 1.000
2.00
20°C
4.00
7.00
10.00
Any Any
1.679
25 °C
4.006
6.865
9.180
12.454
2.000
25 °C
4.010
7.000
10.011
20°C
7.000
9.000
20°C
6.000
8.000
13.000
7
Merck 3 * 4.660
20°C
6.880
9.220
8
Merck 4 * 2.000
20°C
4.000
7.000
10.000
9
Merck 5 * 4.010
25 °C
7.000
10.000
Brand names or trade names are trademarks of their respective owners protected
by law.
The buffers are selected in the menu, pH /
Buffer (see section 11.1.1 S
ETTINGS FOR PH MEASUREMENTS, page
<OK> / Calibration /
61).
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MD 8000 H Settings
11.1.3 Calibration interval
The calibration evaluation is displayed as a sensor symbol.
To ensure the high measuring accuracy of the measuring system,
calibrate after the calibration interval has expired.
Setting the calibra-
tion interval
The calibration interval is set to 7 days in the factory.
You can change the interval (1 ... 999 days):
1. Open the menu for measurement settings with <OK>.
2. In the Calibration / Calibration interval menu, set the calibration interval
<><>.
with
3. Confirm the setting with
4. Quit the menu with
<OK>.
<MODE>.
11.2 ORP measurement settings
11.2.1 Settings for ORP measurements
The settings are made in the menu for measuring settings of the ORP measurement. To open the settings, display the required measured parameter in the
measured value display and press the
tings, switch to the measured value display with
Default settings are printed in bold.
<OK> key. After completing the set-
<MODE>.
Menu item Possible setting Explanation
mV resolution 0.1
Resolution of the mV display
1
Reset - Resets all sensor settings to the
delivery condition (see section
11.7.1 R
MENT SETTINGS, page 70).
ESETTING THE MEASURE-
11.3 D.O. measurement settings
11.3.1 Settings for D.O. sensors (menu for measurement and calibration settings)
Settings The settings are available in the menu for measurement and calibration set-
tings. To open the settings, display the required measured parameter in the
measured value display and press the <OK> key. After completing the set-
ba77219e01 11/2018 63
Settings MD 8000 H
tings, switch to the measured value display with <MODE>.
Default settings are printed in bold.
Menu item Possible
setting
Calibration /
- Displays the calibration record of
Calibration record
Calibration /
- Displays the last calibration
Calibration data
storage / Display
Calibration /
- Outputs the calibration data stor-
Calibration data
storage / Output to
RS232/USB
Calibration /
Calibration interval
Calibration /
Comparison meas.
1 ... 180 ...
999 d
on
off
Explanation
the last calibration.
records.
age to the interface
Calibration interval for the D.O.
sensor (in days).
The meter reminds you to calibrate
regularly by the flashing sensor
symbol in the measuring screen.
Enables to adjust the measured
value with the aid of a comparison
measurement, e.g. Winkler titration.
For details, see section 8.2 C
BRATION, page 42.
ALI-
Calibration / cap
coefficients
Salinity/Sal correction
K1
...
K5
KC
on
off
Enter the cap coefficients here after
exchanging the sensor cap.
For details, see section 11.3.2
NTER CAP COEFFICIENTS, page 65.
E
Manual salt content correction for
concentration measurements.
Salinity/Salinity 0.0 ... 70.0 Salinity or salinity equivalent for the
salt content correction.
This menu item is only available if
the manual salinity correction is
switched on.
Resolution 0.1
1
Set a high or low resolution.
The setting of the resolution is separately stored for each measured
parameter.
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MD 8000 H Settings
Menu item Possible
Explanation
setting
Saturation, local on
off
Saturation, local is a procedure that
takes the local air pressure into
account for each saturation measurement.
For details, see section 11.3.3 S
URATION, LOCAL, page 65.
Reset - Resets all sensor settings to the
delivery condition (see section
11.7.1 R
MENT SETTINGS, page 70).
ESETTING THE MEASURE-
11.3.2 Enter cap coefficients
The values of the coefficients are provided with the sensor cap.
AT-
1. Change the digit of the highlighted position with
2. Go to the next position with
3. Confirm with
<OK> when a coefficient is completely entered.
<><>.
<><>
.
11.3.3 Saturation, local
Irrespective of the height or air pressure, the calibration value is set to 100 %.
The function Saturation, local fulfills the EU regulations for the parameter
oxygen saturation [%].
When the Saturation, local is enabled the display shows an [L] for the parameter oxygen saturation.
D.O. mg/L readings are unaffected by the selection of the Saturation, local
function.
11.4 Cond measurement settings
11.4.1 Settings for IDP conductivity sensors
Settings The settings are made in the menu for the measured parameter, conductivity.
To open the settings, display the required measured parameter in the measured value display and press the
ba77219e01 11/2018 65
<OK> key. After completing the settings,
Settings MD 8000 H
switch to the measured value display with <M>.
Default settings are printed in bold.
Setting menu
Menu item Possible
Explanation
setting
Calibration /
Calibration record
Calibration /
Calibration data stor-
- Displays the calibration record of
the last calibration.
- Displays the last calibration
records (max. 10)
age / Display
Calibration /
Calibration data stor-
- Outputs the calibration data stor-
age to the interface
age / Output to
RS232/USB
Calibration /
Calibration interval
1 ... 150 ...
999 d
Calibration interval for the IDP
conductivity sensor (in days).
The meter reminds you to calibrate regularly by the flashing
sensor symbol in the measuring
screen.
Type Used measuring cell
Cal Measuring cells whose cell con-
stant is determined by calibration in the KCL control standard
solution.
Calibration range:
0.450 to 0.500 cm
-1
The currently valid cell constant
is displayed in the status line.
man Freely (manually) adjustable cell
constant in the range 0.450 ...
-1.
Cell const. man 0.450 ...
0.475 ...
0.500 cm
0.500 cm
Display and setting options for
the manually adjustable cell con-
-1
stant.
This menu item is only available
when Type man is set.
Temp. comp. (TC) /
Method
nLF
Lin
off
Procedure for temperature compensation (see section 9.2 T
PERATURE COMPENSATION, page
EM-
50).
This setting is only available for
the measured parameters, conductivity (ϰ) and resistivity (ρ).
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MD 8000 H Settings
Menu item Possible
Explanation
setting
Temp. comp. (TC) /
Linear coeff.
0.000 ...
2.000 ...
3.000 %/K
Coefficient of the linear temperature compensation.
This menu item is only available
when the linear temperature
compensation is set.
Temp. comp. (TC) /
Reference temp.
20 °C
25 °C
Reference temperature
This setting is only available for
the measured parameters, conductivity (ϰ) and resistivity (ρ).
Multiplier for TDS 0.40 ... 1.00 Factor for TDS value
Reset - Resets all sensor settings to the
delivery condition (see section
11.7.1 R
MENT SETTINGS, page 70).
ESETTING THE MEASURE-
11.5 Turb measurement settings
Setting menu of the
VisoTurb
®
900-P
11.5.1 Settings for turbidity sensors
The settings are made in the menu for the measured parameter, turbidity. To
open the settings, display the required measured parameter in the measured
value display and press the
the measured value display with
<OK> key. After completing the settings, switch to
<M>.
The possible settings are individually displayed for each sensor. Default settings are printed in bold.
Menu item Possible
Explanation
setting
Calibration /
Calibration record
Calibration /
Calibration data
- Displays the calibration record of the
last calibration.
- Displays the last calibration records
(max. 10)
storage / Display
Calibration /
Calibration data
storage / Copy to
- Outputs the stored calibration data
to a connected USB memory device/
USB printer)
USB flash drive
Calibration /
Calibration data
- Outputs the calibration data storage
to the interface
storage / Output to
RS232/USB
ba77219e01 11/2018 67
Settings MD 8000 H
Menu item Possible
Explanation
setting
Calibration /
Calibration interval
1 ... 30 ...
999 d
Calibration interval for the turbidity
sensor (in days).
The meter reminds you to calibrate
regularly by the flashing sensor symbol in the measuring screen.
Resolution 0.1
Resolution of the FNU/NTU display
1
Reset - Resets all sensor settings to the
delivery condition (see section
11.7.1 R
SETTINGS, page 70).
ESETTING THE MEASUREMENT
11.6 Sensor-independent settings
11.6.1 System
To open the Storage & config menu, press the
value display. After completing the settings, switch to the measured value display with
<MODE>.
<OK_ > key in the measured
Default settings are printed in bold.
Menu item Possible setting Explanation
System / General / Language
Deutsch
English
Selects the menu language
(more)
System / General / Audio
signal
System / General / Illumi-
nation
on
off
Auto
on
Switches on/off the beep on keystroke
Switches the display illumination on/off
off
System / General / Con-
0 ... 50 ... 100 Changes the display contrast
trast
System / General / Shutoff
time
System / General / Temperature unit
10 min ... 1h ...
24 h
°C
°F
Adjusts the switch-off time
Temperature unit,
degrees Celsius or degrees Fahrenheit.
All temperature values are displayed with the
selected unit.
System / General / Stability control
68 ba77219e01 11/2018
on
off
Switches on or off the automatic stability control
during measurement (see section 11.6.3 A
MATIC STABILITY CONTROL, page 69 )
UTO-
MD 8000 H Settings
Menu item Possible setting Explanation
System / Interface / Baud
rate
1200, 2400,
4800, 9600,
Baud rate of the USB Device interface
19200
System / Interface / Output format
ASCII
CSV
Output format for data transmission
For details, see section 13 T
(USB
INTERFACE), page 79
RANSMITTING DATA
Only for: Output format
CSV:
System / Interface /
Decimal separator
System / Interface /
Dot (xx.x)
Comma (xx,x)
Decimal separator
Output of a header for Output format: CSV
Output header
System / Clock function Date format
Datum
Time
System / Service information
Settings of time and date.
For details, see section 5.4.5 E
TION: SETTING THE DATE AND TIME, page 23
XAMPLE 2 ON NAVIGA-
Hardware version and software version of the meter
are displayed.
System / Reset - Resets the system settings to the default values.
For details, see section 11.7.2 R
TEM SETTINGS, page 72
ESETTING THE SYS-
11.6.2 Data storage
This menu contains all functions to display, edit and erase stored measured
values.
Detailed information on the memory functions of the MD 8000 H
are given in section 12 D
ATA STORAGE, page 73.
11.6.3 Automatic Stability control
The automatic Stability control function continuously checks the stability of the
measurement signal. The stability has a considerable impact on the reproducibility of measured values.
You can activate or switch off the automatic Stability control function (see
section 11.6 S
ENSOR-INDEPENDENT SETTINGS, page 68).
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic Stability control is switched off.
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Settings MD 8000 H
11.6.4 Automatic switch-off function
The instrument has an automatic switch-off function in order to save the
batteries (see section 11.6.1 S
YSTEM, page 68). The automatic switchoff func-
tion switches off the meter if no key is pressed for an adjustable period.
The automatic switchoff function is not active
if a USB-B cable is connected
if the Automatic data storage function is active, or with automatic data trans-
mission
11.6.5 Display illumination
The meter automatically switches off the display illumination if no key is
pressed for 20 seconds.
The illumination is switched on with the next keystroke again.
You can also generally switch on the display illumination (see section 11.6.1
S
YSTEM, page 68).
11.7 Reset
You can reset (initialize) all sensor settings and sensor-independent settings
separately from each other.
11.7.1 Resetting the measurement settings
The calibration data are reset to the default settings together with
the measuring parameters. Recalibrate after performing a reset.
pH The following settings for pH measurements are reset to the default settings
with the Reset function:
Setting Default settings
Buffer TEC
Calibration interval 7 d
Unit for slope mV/pH
Measured parameter pH
Unit for slope 0.001
mV resolution 0.1
Asymmetry 0 mV
Slope -59.2 mV
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MD 8000 H Settings
Setting Default settings
Man. temperature 25 °C
Single-point calibration off
The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open the settings, display the required
measured parameter in the measured value display and press the
<OK> key.
ORP The following settings for ORP measurements are reset to the default settings
with the Reset function:
Setting Default settings
mV resolution 0.1
Man. temperature 25 °C
The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open the settings, display the required
measured parameter in the measured value display and press the
<OK> key.
Dissolved oxygen The following settings for D.O. measurements are reset to the default settings
with the Reset function:
Setting Default settings
Calibration interval 180 d
Check interval 60 d
Measured parameter D.O. concentration (mg/l)
Relative slope (S
) 1.00
Rel
Salinity (value) 0.0
Salinity (function) off
Number of calibration points 1
Resolution 0.1
Saturation, local off
The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open the settings, display the required
measured parameter in the measured value display and press the
<OK> key.
Conductivity The following settings for conductivity measurements are reset to the default
settings with the Reset function:
Setting Default settings
Calibration interval 150 d
Measured parameter
ba77219e01 11/2018 71
ϰ
Settings MD 8000 H
Setting Default settings
Cell constant (c) Depending on the connected measur-
ing cell:
0.475 cm
0.475 cm
-1
(calibrated)
-1
(set)
Temperature compensation nLF
Reference temperature 25 °C
Temperature coefficient (TC) of
2.000 %/K
the linear temperature compensation
TDS multiplier 1.00
The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open the settings, display the required
measured parameter in the measured value display and press the
<OK> key.
11.7.2 Resetting the system settings
The following system settings can be reset to the default condition:
Setting Default settings
Language English
Audio signal on
Baud rate 4800 Baud
Output format ASCII
Decimal separator .
Contrast 50
Illumination Auto
Shutoff time 1 h
Temperature unit °C
Stability control on
The resetting of the system settings is done in the menu Storage & config /
System / Reset. To open the menu Storage & config in the measured value
display, press the
<OK_ > key.
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pH 7.000 24.8 °C AR +++
ID number: 1
continue
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12 Data storage
You can transmit measured values (datasets) to the data storage:
Manual data storage (see section 12.1 M
Automatic data storage at intervals (see section 12.2 A
AGE AT INTERVALS, page 74)
ANUAL DATA STORAGE, page 73)
UTOMATIC DATA STOR-
Each data storage process transmits the current dataset to the USB interface.
12.1 Manual data storage
You can transmit a measurement dataset to the data storage as follows. The
dataset is at the same time output to the interface:
1. Press the
The menu for manual data storage appears.
<STR> key shortly.
If the memory is full When all storage locations are occupied, it is not possible to continue storing.
ba77219e01 11/2018 73
2. If necessary, change and confirm the ID number (1 ... 10000) with
<><> and <OK>.
The dataset is stored. The meter switches to the measured value display.
Then you can e.g. transmit the stored data to a PC (see section 12.3.1 E
THE MEASURED VALUE DATA STORAGE, page 76) and subsequently erase the
data storage (see section 12.3.2 E
RASING THE MEASUREMENT DATA STORAGE,
page 77).
DITING
Data storage MD 8000 H
ID number 1
Interval 30 s
Duration 180 min
continue
0d03h00min
0 1d17h33min
Automatic data storage
1
2
3
01.11.2018
08:00
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12.2 Automatic data storage at intervals
The storage interval (Interval) determines the time interval between automatic
data storage processes. Each data storage process transmits the current dataset to the USB interface.
Configuring the
automatic memory
function
1. Press the
<STR_ > key.
The menu for automatic data storage appears.
1 Specified entire storing duration
2 Max. available storage duration
3 Graphical display of the storage usage
Settings You can configure the automatic data storage function with the following set-
tings:
Menu item Possible setting Explanation
ID number 1 ... 10000 ID number for the dataset series.
Interval 1 s, 5 s, 10 s,
30 s, 1 min,
5 min, 10 min,
15 min, 30 min,
60 min
Storage interval.
The lower limit of the storage interval
can be restricted by the number of free
storage locations.
The upper limit is restricted by the storage duration.
Duration 1 min ... x min Storage duration.
Specifies after which time the automatic data storage should be terminated.
The lower limit of the storage duration
is restricted by the storage interval.
The upper limit is restricted by the
number of free storage locations.
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MD 8000 H Data storage
25.0
7.007
pH
°C
0d03h00min
1
2
01.11.2018
08:00
Stop automatic storage?
yes
no
Warning
01.11.2018
08:00
Starting the auto-
matic storing func-
tion
To start the automatic data storage function, select continue with <><>
and confirm with
1 Remaining storing duration
2 Graphical display of the storage duration
The active automatic data storage function can be recognized by the progress
bar in the status line. The progress bar indicates the remaining storage duration.
<OK>. The meter switches to the measured value display.
Terminating the
automatic memory
function prema-
turely
If the automatic data storage function is activated, only the following keys are active:
keys and the automatic switch-off function are deactivated.
Proceed as follows to switch off the automatic data storage function before the
adjusted storage duration has expired:
1. Press the <STR_ > key.
The following window appears.
<MODE><STR_ > and <On/Off>. The other
ba77219e01 11/2018 75
2. Using
The meter switches to the measured value display.
The automatic data storage function is terminated.
<><>, select yes and confirm with <OK>.
Data storage MD 8000 H
12.3 Measurement data storage
12.3.1 Editing the measured value data storage
The contents of the manual or automatic measurement data storage can be
shown on the display.
Each of the measurement data storages has a function to erase the entire
contents.
Editing the data
memory
Settings
The data storage is edited in the menu, Storage & config / Data storage. To
open the Storage & config menu, press the
display.
Open the manual or automatic data storage directly with the
<OK_ > key in the measured value
<RCL> or
<RCL__ > key.
The settings are explained here using the manual data storage as
an example. The same settings and functions are available for the
automatic data storage.
Menu item Setting/
function
Data storage /
Manual data storage
/ Display
- Displays all measurement data-
Explanation
sets page by page.
Further options:
Scroll through the datasets with
<>< >.
Data storage /
Manual data storage
/ Output to RS232/
USB
Data storage /
Manual data storage
/ Erase
Output the displayed dataset to
the interface with
output].
Quit the display with
[Zurück].
- Outputs all stored measurement
data to the interface.
- Erases the entire manual measurement data storage.
Note:
All calibration data remain stored
when this action is performed.
<F2>/[USB
<F1>/
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IDP 711 B092500013
pH 7.000 24.8 °C AR Sensor:
+++
01.11.2018
08:00
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USB output
01.11.2018 07:43:33
MD 8000 H
Ser. no. 09250023
ID number 2
IDP 711
Ser. no. B092500013
pH 6.012 24.8 °C, AR, S: +++
________________________________________
01.11.2018 07:43:53
MD 8000 H
Ser. no. 09250013
ID number 2
IDP 711
Ser. no. B092500013
pH 6.012 24.8 °C, AR, S: +++
________________________________________
Display presentation
of a dataset
Representation of a
dataset
(USB output)
Quitting the display To quit the display of stored measurement datasets, you have the following
options:
Switch directly to the measured value display with
Quit the display and move to the next higher menu level with
12.3.2 Erasing the measurement data storage
ba77219e01 11/2018 77
Erasing the measurement data storage (see section 12.3.1 E
MEASURED VALUE DATA STORAGE, page 76).
12.3.3 Measurement dataset
A complete dataset consists of:
Date/time
Meter name, series number
Sensor name, series number
<MODE>.
<F1>/[Zurück].
DITING THE
Data storage MD 8000 H
ID number
Measured value of the connected sensor
Measured temperature value of the connected sensor
AutoRead info: AR appears with the measured value if the AutoRead crite-
rion was met while storing (stable measured value). Otherwise, the AR display is missing.
Calibration evaluation:
- 4 levels (+++, ++, +, -, or no evaluation)
12.3.4 Storage locations
The MD 8000 H meter has two measurement data storages. The measured
values recorded either manually or automatic are stored separately in individual measurement data storages.
Data memory Maximum number of datasets
Manual data storage 500
Automatic data storage 4500
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MD 8000 H Transmitting data (USB interface)
13 Transmitting data (USB interface)
13.1 Outputting current measurement data
1. Output the current measurement data to the USB-B interface with
<F2>[USB output].
13.2 Transmitting data (to a PC)
The meter has a USB-B interface (USB Device) e.g. to connect a PC.
Via the USB-B interface (USB Device) you can transmit data to a PC or printer
and update the meter software.
13.3 Connecting the PC / USB-B interface (USB Device)
Installation of the
USB driver on the
PC
Connect the MD 8000 H to the PC via the USB-B interface.
System requirements of the PC for installation of the USB driver:
PC with at least one free USB connection and CD-ROM drive
Windows 2000, Windows XP, Windows Vista or Windows 7.
1. Insert the supplied installation CD in the CD drive of your PC.
2. Install the driver from the CD.
Follow the Windows installation instructions as necessary.
3. Connect the MD 8000 H to the PC via the USB-B interface.
The meter is listed as a virtual COM interface among the connections in
the Windows instrument manager.
4. Set the same transmission data at the connected instrument (PC):
Baud rate: to be selected in the range 1200 ... 19200
Handshake: RTS/CTS
Set at the PC only:
– Parity: none
– Data bits: 8
– Stop bits: 2
ba77219e01 11/2018 79
Transmitting data (USB interface) MD 8000 H
13.4 Options for data transmission to a PC
Via the USB-B interface you can transmit data to a PC. The following table
shows which data are transmitted to the interface in which way:
Data Control Operation / description
Current
measured
values of all
connected
sensors
Stored measured values
Calibration
records
Manual With
<F2>/[USB output].
Simultaneously with every manual
data storage process (see section 12.1
M
ANUAL DATA STORAGE, page 73).
automatic, at
intervals
With
<F2__>/[USB output] .
Then you can set the transmission
interval.
Simultaneously with every automatic
data storage process (see section 12.2
A
UTOMATIC DATA STORAGE AT INTER-
VALS, page 74).
Manual Displayed dataset with
put] after calling up from the data storage.
All datasets with the Output to RS232/
USB function.
(see section 12.3.1 E
SURED VALUE DATA STORAGE, page 76).
DITING THE MEA-
Manual Calibration record with
output] (see section 6.2.6 C
DATA, page 34; section 8.2.7 CALIBRA-
TION DATA, page 46; section 9.3.4 CAL-
IBRATION DATA, page 52).
<F2>[USB out-
<F2>/[USB
ALIBRATION
automatic At the end of a calibration procedure.
The following rule applies: With the exception of the menus, shortly
pressing the
<F2>/[USB output] key generally outputs the display
contents to the interface (displayed measured values, measuring
datasets, calibration records).
13.5 MultiLab Importer
With the aid of the MultiLab Importer software, you can record and evaluate
measurement data with a PC.
More detailed information can be found in the MultiLab Importer
operating manual.
80 ba77219e01 11/2018
MD 8000 H Maintenance, cleaning, disposal
1
2
14 Maintenance, cleaning, disposal
14.1 Maintenance
14.1.1 General maintenance activities
The only maintenance activity required is replacing the batteries.
See the relevant operating manuals of the IDP sensors for instructions on maintenance.
14.1.2 Replacing the batteries
You can operate the meter either with normal batteries or with
rechargeable batteries (Ni-MH). In order to charge the batteries, an
external charging device is required.
1Screws
2 Battery compartment
1. Unscrew the screws (1) on the underside of the meter.
2. Open the battery compartment (2) on the underside of the meter.
CAUTION
Make sure that the poles of the batteries are positioned correctly.
The
± signs on the batteries must correspond to the ± signs in
the battery compartment.
3. Place four batteries (type Mignon AA) in the battery compartment.
4. Close the battery compartment.
ba77219e01 11/2018 81
Maintenance, cleaning, disposal MD 8000 H
5. Set the date and time (see section 5.4.5 E
TING THE DATE AND TIME, page 23).
XAMPLE 2 ON NAVIGATION: SET-
Dispose of used batteries according to the local regulations of your
country.
End users within the European Union are obligated to return used
batteries (even ecologically compatible ones) to a collection point
set up for recycling purposes.
Batteries are marked with the crossed-out waste container
symbol. Therefore, they may not be disposed with the domestic
waste.
14.2 Cleaning
Occasionally wipe the outside of the measuring instrument with a damp, lintfree cloth. Disinfect the housing with isopropanol as required.
CAUTION
The housing is made of synthetic material (ABS). Thus, avoid
contact with acetone or similar detergents that contain solvents. Remove any splashes immediately.
14.3 Packing
This meter is sent out in a protective transport packing.
We recommend: Keep the packing material. The original packing protects the
meter against damage during transport.
14.4 Disposal
This equipment is marked with the crossed out wheeled bin symbol.
It means that this equipment must not be disposed of with unsorted waste.
Instead it's your responsibility to correctly dispose of your equipment at the end
of its lifecycle by handing it over to an authorized facility for separate collection
and recycling.It's also your responsibility to decontaminate the equipment in
case of biological, chemical and/or radiological contamination, so as to protect
from health hazards the persons involved in the disposal and recycling of the
equipment. For more information about where you can drop off your waste of
equipment, please contact your local dealer from whom you originally
purchased this equipment.
By doing so, you will help to conserve natural and environmental resources and
you will ensure that your equipment is recycled in a manner that protects
human health.
Thank you!
82 ba77219e01 11/2018
MD 8000 H What to do if...
15 What to do if...
15.1 pH
More information and instructions on cleaning and exchange of
sensors are given in the documentation of your sensor.
Error message
OFL, UFL
Error message,
Error
The measured value is outside the measuring range.
Cause Remedy
IDP pH sensor:
– The measured value is outside
the measuring range of the
meter
– Air bubble in front of the junction – Remove air bubble
– Air in the junction – Extract air or moisten junction
– Cable broken – Replace the sensor
– Gel electrolyte dried out – Replace the sensor
Cause Remedy
IDP pH sensor:
– The values determined for zero
point and slope of the IDP pH
sensor are outside the allowed
limits.
– Use a suitable IDP pH sensor
(e.g. sway or stir the solution)
–Recalibrate
– Junction contaminated – Clean junction
– Sensor soiled – Clean the sensor
– Sensor broken – Replace the sensor
Buffer solutions:
– The used buffer solutions do not
agree with the set buffer set
– Buffer solutions too old – Use only once.
– Buffer solutions depleted – Change solutions
ba77219e01 11/2018 83
– Set different buffer set
or
– Use different buffer solutions
Note the shelf life
What to do if... MD 8000 H
No stable measured
Cause Remedy
value
IDP pH sensor:
– Junction contaminated – Clean junction
– Membrane contaminated – Clean membrane
– pH sensor soiled – Clean the pH sensor
Test sample:
– pH value not stable – Measure with air excluded if neces-
sary
– Temperature not stable – Adjust temperature if necessary
IDP pH sensor + test sample:
Obviously incorrect
measured values
– Conductivity too low – Use a suitable IDP pH sensor
– Temperature too high – Use a suitable IDP pH sensor
– Organic liquids – Use a suitable IDP pH sensor
Cause Remedy
IDP pH sensor:
– Sensor unsuitable – Use a suitable IDP sensor
– Temperature difference
between buffer and test sample
– Adjust temperature of buffer or sam-
ple solutions
too great
– Measurement procedure not
– Follow special procedure
suitable
15.2 Dissolved oxygen
More information and instructions on cleaning and exchange of
sensors are given in the documentation of your sensor.
Error message
The measured value is outside the measuring range.
OFL, UFL
84 ba77219e01 11/2018
MD 8000 H What to do if...
Cause Remedy
Error message,
Error
– Measured value outside the
– Use a suitable IDP D.O. sensor
measuring range
Cause Remedy
– Sensor contaminated – Clean the sensor
– Measured temperature value
outside the operating conditions
– Keep to the temperature range for
the test sample
(display of OFL/UFL instead of a
temperature value)
– Defective sensor – Calibration
– Exchange the sensor cap
– Replace the sensor
15.3 Conductivity
More information and instructions on cleaning and exchange of
sensors are given in the documentation of your sensor.
Error message
OFL, UFL
Error message,
Error
Sensor symbol
flashes
The measured value is outside the measuring range.
Cause Remedy
– Measured value outside the
measuring range
– Use a suitable IDP conductivity sen-
sor
Cause Remedy
– Sensor contaminated – Clean the sensor and replace it if
necessary
– Calibration solution not suitable – Check the calibration solutions
15.4 General topics
Cause Remedy
– Calibration interval expired – Recalibrate the measuring system
ba77219e01 11/2018 85
What to do if... MD 8000 H
Display
Meter does not react
to keystroke
You want to know
which software ver-
sion is in the meter
or IDP sensor
Cause Remedy
– Batteries almost empty – Replace the batteries (see section
14.1 M
AINTENANCE, page 81)
Cause Remedy
– Operating condition undefined
or EMC load unallowed
– Processor reset:
Press the
<OK> and <On/Off> key
simultaneously
Cause Remedy
– E. g., a question by the service
department
– Switch on the meter.
– Open the menu,
<OK_ > / Storage &
config / System / Service information.
The instrument data are displayed.
or
– Connect the sensor.
Press softkey [
<F1>i<F1>] / [More]
The sensor data are displayed (see
section 5.1.5 S
ENSOR INFO, page 17)
86 ba77219e01 11/2018
MD 8000 H Firmware update
16 Firmware update
16.1 Firmware update for the meter MD 8000 H
With the "Firmware Update " program and a PC you can update the firmware
of the MD 8000 H to the newest version.
For firmware updates for the meter, go to www.vwr.com, or contact your VWR
sales center.
For the update you have to connect the meter to a PC.
For the update via the USB-B interface, the following is required:
a free USB interface (virtual COM port) on the PC
the driver for the USB interface (on the enclosed CD-ROM)
the USB cable (included in the scope of delivery of the MD 8000 H).
1. Install the downloaded firmware update on a PC.
An update folder is created in the Windows start menu.
If an update folder already exists for the meter (or meter type), the new
data are displayed there.
2. In the windows start menu, open the update folder and start the firmware update program for the meter
3. Using the USB interface cable, connect the MD 8000 H to a USB interface (virtual COM port) of the PC.
4. Switch on the MD 8000 H.
5. In the firmware update program, start the update process with OK.
6. Follow the instructions of the firmware update program.
During the programming process, a corresponding message and a
progress bar (in %) are displayed.
The programming process takes up to 15 minutes. A terminatory message is displayed after a successful programming process. The firmware update is completed.
7. Disconnect the MD 8000 H from the PC.
The MD 8000 H is ready for operation again.
After switching the meter off and on you can check whether the meter has taken
over the new software version (see Y
VERSION IS IN THE METER OR IDP SENSOR, PAGE 86).
OU WANT TO KNOW WHICH SOFTWARE
ba77219e01 11/2018 87
Firmware update MD 8000 H
16.2 Firmware update for IDP sensors
With the "Firmware Update " program and a PC you can update the firmware
of the IDP sensor to the newest version.
For firmware updates for the IDP sensors, go to www.vwr.com, or contact your
VWR sales center.
For the update connect the IDP sensor with the MD 8000 H, and the
MD 8000 H with a PC.
For the update via the USB-B interface, the following is required:
a free USB interface (virtual COM port) on the PC
the driver for the USB interface (on the enclosed CD-ROM)
the USB cable (included in the scope of delivery of the MD 8000 H).
1. Install the downloaded firmware update on a PC.
An update folder is created in the Windows start menu.
If an update folder already exists for the sensor (or sensor type), the
new data are displayed there.
2. In the windows start menu, open the update folder and start the firmware update program for the IDP sensor.
3. Connect the IDP sensor with the MD 8000 H meter.
4. Using the USB interface cable, connect the MD 8000 H to a USB interface (virtual COM port) of the PC.
5. Switch on the MD 8000 H.
6. In the firmware update program, start the update process with OK.
7. Follow the instructions of the firmware update program.
During the programming process, a corresponding message and a
progress bar (in %) are displayed.
The programming process takes up to 5 minutes. A terminatory message is displayed after a successful programming process. The firmware update is completed.
8. Disconnect the MD 8000 H from the PC.
Meter and sensor are ready for operation again.
After switching the meter off and on you can check whether the sensor has
taken over the new software version (see Y
VERSION IS IN THE METER OR IDP SENSOR, PAGE 86).
OU WANT TO KNOW WHICH SOFTWARE
88 ba77219e01 11/2018
MD 8000 H Glossary
17 Glossary
pH/ORP
Asymmetry see zero point
Electromotive force of
an electrode
Junction The junction is a porous body in the housing wall of reference elec-
ORP
(U)
pH value The pH value is a measure of the acidic or basic effect of an aqueous
Potentiometry Name of a measuring technique. The signal (depending on the mea-
Slope The slope of a linear calibration function.
The electromotive force U of the combination electrode is the measurable electromotive force of an electrode in a solution. It equals the sum
of all the galvanic voltages of the combination electrode. Its dependency on the pH results in the electrode function, which is characterized
by the parameters, slope and zero point.
trodes or electrolyte bridges. It arranges the electrical contact between
two solutions and makes the electrolyte exchange more difficult. The
expression, junction, is also used for ground or junction-less transitions.
The ORP is caused by oxidizing or reducing substances dissolved in
water if these substances become effective on an electrode surface (e.
g. a gold or platinum surface).
solution. It corresponds to the negative decadic logarithm of the molal
hydrogen ions activity divided by the unit of the molality. The practical
pH value is the value of a pH measurement.
sured parameter) of the electrode is the electrical potential. The electrical current remains constant.
Zero point The zero point of a pH combination electrode is the pH value at which
the electromotive force of the pH combination electrode at a specified
temperature is zero. Normally, this is at 25 °C.
Conductivity
Cell constant (c) Characteristic quantity of a conductivity measuring cell, depending on
the geometry.
Conductivity (ϰ) Short form of the expression, specific electrical conductivity.
It corresponds to the reciprocal value of the resistivity.
It is a measured value of the ability of a substance to conduct an electric
current. In water analysis, the electrical conductivity is a dimension for
the ionized substances in a solution.
Reference tempera-
ture
Resistivity (ρ) Short name for the specific electrolytic resistance. It corresponds to the
Fixed temperature value to compare temperature-dependent measured
values. For conductivity measurements, the measured value is converted to a conductivity value at a reference temperature of 20 °C or 25
°C.
reciprocal value of the electrical conductivity.
ba77219e01 11/2018 89
Glossary MD 8000 H
α
T
Ref
=
Meas
*
1
1+
a
(T - )
*
T
Ref
Salinity The absolute salinity SA of seawater corresponds to the relationship of
the mass of dissolved salts to the mass of the solution (in g/Kg). In practice, this dimension cannot be measured directly. Therefore, the practical salinity according to IOT is used for oceanographic monitoring. It is
determined by measuring the electrical conductivity.
Salt content General designation for the quantity of salt dissolved in water.
Temperature coeffi-
Value of the slope of a linear temperature function.
cient
Temperature compen-
sation
Name of a function that considers the temperature influence on the
measurement and converts it accordingly. Depending on the measured
parameter to be determined, the temperature compensation functions
in different ways. For conductimetric measurements, the measured
value is converted to a defined reference temperature. For potentiometric measurements, the slope value is adjusted to the temperature of the
test sample but the measured value is not converted.
Dissolved oxygen
D.O. partial pressure Pressure caused by the oxygen in a gas mixture or liquid.
D.O. saturation Short name for the relative D.O. saturation.
The ratio of the D.O. partial pressure in the test sample to the D. O.
partial pressure of air at the currently present air pressure.
Example: 100% means that the D. O. partial pressure in the test sample is the same as that in the ambient air – air and test sample are at
equilibrium.
Salinity The absolute salinity S
of seawater corresponds to the relationship
A
of the mass of dissolved salts to the mass of the solution (in g/Kg). In
practice, this dimension cannot be measured directly. Therefore, the
practical salinity according to IOT is used for oceanographic monitoring. It is determined by measuring the electrical conductivity.
Salt content General designation for the quantity of salt dissolved in water.
Slope (relative) Relation of the slope value to the value of a theoretical reference sen-
sor of the same construction type.
General topics
Adjusting To manipulate a measuring system so that the relevant value (e. g. the
displayed value) differs as little as possible from the correct value or a
value that is regarded as correct, or that the difference remains within
the tolerance.
AutoRange Name of the automatic selection of the measuring range.
90 ba77219e01 11/2018
MD 8000 H Glossary
Calibration Comparing the value from a measuring system (e. g. the displayed
value) to the correct value or a value that is regarded as correct. Often,
this expression is also used when the measuring system is adjusted at
the same time (see adjusting).
Measured parameter The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or D.O. concentration.
Measured value The measured value is the special value of a measured parameter to be
determined. It is given as a combination of the numerical value and unit
(e.g. 3 m; 0.5 s; 5.2 A; 373.15 K).
Molality Molality is the quantity (in Mol) of a dissolved substance in 1000 g sol-
vent.
Reset Restoring the original condition of all settings of a measuring system.
Resolution Smallest difference between two measured values that can be dis-
played by a meter.
Stability control (Au-
Function to control the measured value stability.
toRead )
Standard solution The standard solution is a solution where the measured value is known
by definition. It is used to calibrate a measuring system.
Temperature function Name of a mathematical function expressing the temperature behavior
of a test sample, a sensor or part of a sensor.
Test sample Designation of the test sample ready to be measured. Normally, a test
sample is made by processing the original sample. The test sample and
original sample are identical if the test sample was not processed.
ba77219e01 11/2018 91
MD 8000 H Index
18 Index
A
Automatic switch-off function . . . . . . . . . . . 70
AutoRead . . . . . . . . . . . . . . . . . . . . 41, 48, 55
ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
B
Battery compartment . . . . . . . . . . . . . . 14, 81
C
Calibration
Conductivity . . . . . . . . . . . . . . . . . . . . . 51
pH . . . . . . . . . . . . . . . . . . . . . . . . . 27, 39
Calibration evaluation
Conductivity . . . . . . . . . . . . . . . . . . . . . 53
ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Calibration interval
Conductivity . . . . . . . . . . . . . . . . . . 66, 68
O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Calibration points
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
calibration records . . . . . . . . . . . . . . . . . . . 52
Cell constant . . . . . . . . . . . . . . . . . . . . . . . 51
Comparison measurement (D.O.) . . . . . . . 43
Connecting a PC . . . . . . . . . . . . . . . . . . . . 79
D
Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Date and time . . . . . . . . . . . . . . . . . . . . . . . 23
Default settings
Measured parameter . . . . . . . . . . . . . . 70
System settings . . . . . . . . . . . . . . . . . . 72
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
F
Firmware update . . . . . . . . . . . . . . . . . . . . 87
I
Initial commissioning . . . . . . . . . . . . . . . . . 13
Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Interval for calibration . . . . . . . . . . . . . . . . . 63
K
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
M
Measured value display . . . . . . . . . . . . . . 19
Measurement accuracy . . . . . . . . . . . . . . . 63
Measurement data storage
Edit . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Erase . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Storage locations . . . . . . . . . . . . . . . . 78
Measurement dataset . . . . . . . . . . . . . . . . 77
Measuring
Conductivity . . . . . . . . . . . . . . . . . . 48, 54
O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
ORP . . . . . . . . . . . . . . . . . . . . . . . . . . 37
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Menu for calibration and measurement settings
Conductivity . . . . . . . . . . . . . . . . . . . . . 65
O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
pH/ORP . . . . . . . . . . . . . . . . . . . . . . . . 61
Menus (navigation) . . . . . . . . . . . . . . . . . . 19
Messages . . . . . . . . . . . . . . . . . . . . . . . . . 21
P
pH buffer sets . . . . . . . . . . . . . . . . . . . . . . 62
R
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
S
Scope of delivery . . . . . . . . . . . . . . . . . . . . 13
Single-point calibration
pH . . . . . . . . . . . . . . . . . . . . . . . . . 28, 32
Slope
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Socket field . . . . . . . . . . . . . . . . . . . . . . . . 17
Stability control
automatic . . . . . . . . . . . . . . . . . . . . . . . 69
Manual . . . . . . . . . . . . . . . . . . 25, 37, 41
Storage interval . . . . . . . . . . . . . . . . . . . . . 74
Storing in memory . . . . . . . . . . . . . . . . . . . 73
Automatic . . . . . . . . . . . . . . . . . . . . . . 74
Manual . . . . . . . . . . . . . . . . . . . . . . . . 73
T
Temperature compensation . . . . . . . . . . . 50
Temperature measurement
Conductivity . . . . . . . . . . . . . . . . . . . . . 50
O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
pH . . . . . . . . . . . . . . . . . . . . . . . . . 26, 38
ba77219e01 11/2018 92
MD 8000 H Index
Three-point calibration
ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
pH . . . . . . . . . . . . . . . . . . . . . . . . . . 29, 33
Transmitting data . . . . . . . . . . . . . . . . . . . . 79
automatic . . . . . . . . . . . . . . . . . . . . . . . 80
Manual . . . . . . . . . . . . . . . . . . . . . . . . . 80
Transmitting measured values . . . . . . . . . . 79
Two-point calibration
ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
pH . . . . . . . . . . . . . . . . . . . . . . . . . . 28, 32
Z
Zero point of pH electrode . . . . . . . . . . . . . 27
ba77219e01 11/2018 93
Technical service MD 8000 H
19 Technical service
Web resources
Visit the VWR website at www.vwr.com for:
Complete technical service contact information
Access to VWR’s Online Catalogue, and information about accesso-
ries and related products
Additional product information and special offers
Contact us:
For information or technical assistance contact your local VWR representative or visit www.vwr.com.
20 Warranty
VWR warrants that this product will be free from defects in material and
workmanship for a period of three (3) years from date of delivery. If a
defect is present, VWR will, at its option and cost, repair, replace, or
refund the purchase price of this product to the customer, provided it is
returned during the warranty period. This warranty does not apply if the
product has been damaged by accident, abuse, misuse, or misapplication, or from ordinary wear and tear. If the required maintenance and
inspection services are not performed according to the manuals and
any local regulations, such warranty turns invalid, except to the extent,
the defect of the product is not due to such non performance.
Items being returned must be insured by the customer against possible
damage or loss. This warranty shall be limited to the aforementioned
remedies. IT IS EXPRESSLY AGREED THAT THIS WARRANTY
WILL BE IN LIEU OF ALL WARRANTIES OF FITNESS AND IN LIEU
OF THE WARRANTY OF MERCHANTABILITY.
94
ba77219e01 11/2018
Your Distributor
Austria
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Tel.: +43 01 97 002 0
Email: info.at@vwr.com
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Fax:+86-21-5855 8801
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Tel.: +33 (0) 1 45 14 85 00
(international)
Email: info.fr@vwr.com
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Tel.: +49 (0) 6151 3972 0 (international)
Email: info.de@vwr.com
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Tel.: +36 (52) 521-130
Email: info.hu@vwr.com
India
VWR Lab Products Private Limited
No.139. BDA Industrial Suburb,
6th Main, Tumkur Road, Peenya Post,
Bangalore, India – 560058
Tel.: +91-80-28078400
Email: vwr_india@vwr.com
Ireland / Northern Ireland
VWR International Ltd / VWR
International (Northern Ireland) Ltd
Orion Business Campus
Northwest Business Park
Ballycoolin
Dublin 15
Tel.: +353 01 88 22 222
Email sales.ie@vwr.com
Italy
VWR International S.r.l.
Via San Giusto 85
20153 Milano (MI)
Tel.: +39 02-3320311
Email: info.it@vwr.com
The Netherl ands
VWR International B.V.
Postbus 8198
1005 AD Amsterdam
Tel.: +31 020 4808 400
Email: info.nl@vwr.com
Norway
VWR International AS
Haavard Martinsens vei 30
0978 Oslo
Tel.: +47 22 900000
Email: info.no@vwr.com
Poland
VWR International Sp. z o.o.
Limbowa 5
80-175 Gdansk
Tel.: +48 058 32 38 200
Email: info.pl@vwr.com
Portugal
VWR International –
Material de Laboratório, Lda
Centro Empresarial de Alfragide
Rua da Indústria, nº 6
2610-088 Amadora
Tel.: +351 21 3600 770
Email: info.pt@vwr.com
Singapore
VWR Singapore Pte Ltd
18 Gul Drive
Singapore 629468
Tel: +65 6505 0760
Email: sales.sg@vwr.com
Spain
VWR International Eurolab S.L.
C/ Tecnología 5-17
A-7 Llinars Park
08450 - Llinars del Vallès
Barcelona
Tel.: +34 902 222 897
Email: info.es@vwr.com
Sweden
VWR International AB
Fagerstagatan 18a
163 94 Stockholm
Tel.: +46 08 621 34 00
Email: info.se@vwr.com
Switzerland
VWR International AG
Lerzenstrasse 16/18
8953 Dietikon
Tel.: +41 044 745 13 13
Email: info.ch@vwr.com
UK
VWR International Ltd
Customer Service Centre
Hunter Boulevard
Magna Park
Lutterworth
Leicestershire
LE17 4XN
Tel.: +44 (0) 800 22 33 44
Email: uksales@vwr.com
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