VWR MD 8000 H User manual

ba77219e01 11/2018
VWR®MD 8000 H
Multi Parameter Meter
OPERATING MANUAL
European Catalogue Number(s):
PH SET: 665-0494
COND SET: 665-0495
DI.OX SET: 665-0496
8000 H
MD
Version: 1
Issued: November 28, 2018 7:51 am

MD 8000 H
2ba77219e01 11/2018
Legal Address of Manufacturer:
VWR International bvba
Researchpark Haasrode 2020
Geldenaaksebaan 464
B-3001 Leuven
[phone]
http://be.vwr.com
Country of origin: Germany.

Contents
MD 8000 H Contents
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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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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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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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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

MD 8000 H Safety
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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 infor-
mation 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:
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.)
WARNING
indicates a possibly dangerous situation that can lead to seri-
ous (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 fol-
lowed.

Safety MD 8000 H
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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 TECHNICAL DATA, page 11).
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).
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 TECHNICAL DATA, page 11).

MD 8000 H Overview
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2 Overview
2.1 MD 8000 H meter
The MD 8000 H meter enables you to perform measurements (pH, U, conduc-
tivity, 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).
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
show only the settings relevant to the specific sensor in the setting menu
1 Keypad
2 Display
3 Connectors
3
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MD
2
1

Overview MD 8000 H
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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 proce-
dure. A message is displayed while the data are being updated in the sensor.
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.
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 SENSOR INFO, page 17).