Xylem WTW Turb 750 IR/T User manual

OPERATING MANUAL
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750 T
Turb
Turb®750 IR/T
LABORATORY TURBIDIMETER
OPERATING MANUAL

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Turb®750 IR/T
Copyright ©2020 Xylem Analytics Germany GmbH
Printed in Germany.

Turb®750 IR/T Contents
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Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 General features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.1 Safety information in the operating manual . . . . . . . . . 8
2.1.2 Safety signs on the meter . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.3 Further documents providing safety information . . . . . 8
2.2 Safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.2 Requirements for safe operation . . . . . . . . . . . . . . . . . 9
2.2.3 Unauthorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.1 Inserting the batteries . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.2 Connecting the power pack . . . . . . . . . . . . . . . . . . . . 11
3.3 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Inserting a cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Preparing the cell and sample . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3.1 Preparing the cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3.2 Preparing the sample . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 General operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4.2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.3 Navigation example 1: Setting the language . . . . . . . 17
4.4.4 Example 2 on navigation: Setting the date and time .
18
4.5 System settings (System menu) . . . . . . . . . . . . . . . . . . . . . . . 20
4.5.1 Measured value memory . . . . . . . . . . . . . . . . . . . . . . 21
4.5.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.5.3 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.5.4 Date/time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.6 Measuring the turbidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.7 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.7.1 Settings for calibration . . . . . . . . . . . . . . . . . . . . . . . . 26
4.7.2 Carrying out a calibration . . . . . . . . . . . . . . . . . . . . . . 27
4.8 Analytical quality assurance ( AQA ). . . . . . . . . . . . . . . . . . . . . 30

Contents Turb®750 IR/T
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4.8.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.8.2 Settings for quality assurance ( AQA ). . . . . . . . . . . . . 31
4.8.3 Carrying out the AQA check. . . . . . . . . . . . . . . . . . . . 31
4.9 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.9.1 Storing measurement datasets . . . . . . . . . . . . . . . . . . 34
4.9.2 Filtering measurement datasets . . . . . . . . . . . . . . . . . 34
4.9.3 Displaying measurement datasets . . . . . . . . . . . . . . . 35
4.9.4 Outputting measurement datasets to the interfaces . . 36
4.9.5 Erasing stored measurement datasets . . . . . . . . . . . . 36
4.10 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.10.1 Establishing the connection to a PC . . . . . . . . . . . . . . 36
4.10.2 Data transmission with the PC software Turb®Data . 37
4.10.3 Configuration for the data transmission to a terminal
program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.10.4 Establishing the connection to a printer . . . . . . . . . . . 38
4.10.5 Transmitting data to a printer or terminal program . . . 39
4.11 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.11.1 Resetting the system settings . . . . . . . . . . . . . . . . . . . 41
4.11.2 Resetting turbidimeter settings . . . . . . . . . . . . . . . . . . 41
4.12 Meter information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.13 Software update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . . . . . . 43
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.2.1 Cleaning the cell shaft . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.2.2 Cleaning the cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.2 Turbidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.2 Turbidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.2.1 Turb®750 IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.2.2 Turb®750 T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8 Accessories and options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
9 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
10 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
11 Firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Turb®750 IR/T Overview
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1 Overview
1.1 General features
The compact Turb®750 IR/T precision laboratory turbidimeter enables you
to carry out turbidity measurements quickly and reliably.
The Turb®750 IR/T laboratory turbidimeter provides the maximum degree of
ease of operation, reliability and measuring certainty for all applications.
Information on available literature is given in the WTW catalog or on the In-
ternet at www.WTW.com.
1 Keypad
2Display
3 Cell shaft
4 Connectors
If you need further information or application notes, you can obtain
the following material from WTW:
Application reports
Primers
Safety datasheets.
750 T
Turb
1
2
4
3

Overview Turb®750 IR/T
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1.2 Keypad
In this operating manual, keys are indicated by brackets <..> .
The key symbol (e.g. <STO (0) >) generally indicates a short keystroke (under
2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated
by the underscore behind the key symbol (e.g. <STO (0) _>).
Key functions <M (9)>Switch to the measured value display
<CAL (4)>Start calibration
<QuickCAL (1)>Start simplified calibration with one standard.
<AQA (2)>Start the checking of the meter with AQA stan-
dards.
The key is only active if AQA checks were acti-
vated.
<A-Z (5)>Enter letters
(This function will be enabled in a future software
version.)
<START/ENTER (.)>Open menus / confirm entries /
start measurement
<MENU (7)>Call up the Configuration menu
(all settings are made here)
<On/Off> Switch the meter on or off
<PRT (8)>Output display contents to RS232 or USB inter-
face (e.g. print)
<STO (0)>Open the Store menu: <STO (0) >
Quick storing: 2 x <STO (0) >
<STO (0) _> Open the measured value memory
<(6)>, <(3)> Highlight menu items or selection;
Set values
<ESC> Switch to the next higher menu level /
cancel input
Entering numerals with the number keys (see ENTERING NUMER-
ALS WITH THE NUMBER KEYS., page 17).

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1.3 Display
The graphic display shows all information of the current measurement in the
measured value display. The illumination enables to read the display even in
the darkness.
Example
1.4 Socket field
1 Status display indicators, e.g.:
[IRPC] = Intelligent reproducibility and plausibility check
[AQA] = Valid AQA check available
2 Measured value (with unit)
3 Status display indicators, e.g.
[3-P StdCAL] = Valid calibration available
(calibration type: 3-P StdCAL))
4 Status line with date and time
1 USB-B (micro) interface
2 Power pack
3 RS232 (serial) interface
Only one cable may be connected to an interface (RS232 or
USB) at a time.
1
2
3
4
Turbidity
[IRPC] [AQA]
157.0
FNU
NTU
[3-P StdCAL]
15.01.20 16:12
3
1 2

Safety Turb®750 IR/T
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2 Safety
2.1 Safety information
2.1.1 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 fa-
miliar with the meter before putting it into operation or working with it. The op-
erating 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:
NOTE
indicates a possibly dangerous situation where goods might be
damaged if the actions mentioned are not taken.
2.1.2 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.
2.1.3 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 further 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.

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2.2 Safe operation
2.2.1 Authorized use
This meter is authorized exclusively for turbidity measurements in the labo-
ratory.
Only the operation and running of the meter according to the instructions and
technical specifications given in this operating manual is authorized (see
chapter 7 TECHNICAL DATA).
Any other use is considered unauthorized.
2.2.2 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 oper-
ating manual (example: Inserting the batteries).
2.2.3 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 chapter 7 TECHNICAL DATA).
CAUTION
Danger of eye damage by visible and invisible LED radiation.
In the cell shaft of the Turb®750 IR there are light emitting
diodes (LEDs) of the 1M class.
Do not look at the radiation using optical instruments.
With normal, authorized use there is no hazard.

Commissioning Turb®750 IR/T
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3 Commissioning
3.1 Scope of delivery
Laboratory turbidimeter Turb®750 IR or Turb®750 T
4 batteries 1.5 V type AA
Power pack with Euro plug
and exchange plugs for USA, UK, and Australia
Cable USB-A to USB-B (micro)
6 empty cells 28 mm with label to mark the cell
AMCO®-Clear turbidity standard
Microfiber cloth to clean the meter
Compact operating manual and short operating manual
CD-ROM with detailed operating manual
CD-ROM with software Turb®Data
3.2 Power supply
The Turb®750 IR/T is supplied with power by the power pack included in the
scope of delivery. The batteries (4 batteries 1.5 V Mignon type AA) in the bat-
tery compartment supply the integrated clock with power when the power
supply is missing.
3.2.1 Inserting the batteries
1 Battery compartment
1. Open the battery compartment (1) on the underside of the meter.
1

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NOTE
Make sure that the poles of the batteries are positioned correctly.
The ± signs on the batteries must correspond to the ± signs in the bat-
tery compartment.
3.2.2 Connecting the power pack
3.3 Initial commissioning
Perform the following activities:
Insert the batteries (see section 3.2.1)
Connect the power pack (see section 3.2.2)
Set the language as necessary (see section 4.4.3)
Set the date and time as necessary (see section 4.4.4)
2. Place four batteries (type Mignon AA) in the battery compartment.
3. Close the battery compartment (1).
4. Set the date and time
(see section 4.4.5).
WARNING
The line voltage at the operating site must lie within the input
voltage range of the original power pack (see chapter
7T
ECHNICAL DATA).
Use original power packs only (see chapter 7 TECHNICAL DA-
TA).
1 If necessary, replace the Euro plug of the power pack with the coun-
try-specific plug suitable for your country.
2 Insert the plug of the power pack into the socket of the turbidimeter.
3 Connect the power pack to an easily accessible mains socket.
When you set the language, date and time according to the men-
tioned sections of this operating manual you will quickly become
familiar with the simple operation of the Turb®750 IR/T.

Operation Turb®750 IR/T
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4 Operation
4.1 Switching on the meter
Switching on Press the <On/Off> key.
The Start menu appears for 30 seconds.
The status line indicates the meter designation and the version number of the
software.
After a few seconds the meter automatically switches to the measuring mode.
Switching off Press the <On/Off> key.
4.2 Inserting a cell
Before using a cell for the first time, determine and mark the suitable measur-
ing position for the cell (see section 4.3.1).
Using <ESC>, you can go to the Start menu from the measuring
mode.
Turbidity
iTurb®750 IR V2.21
Start
iInsert sample
iPress and hold <START>
iAlign sample
Turbidity
1 Push the dust cover (1) upward.
The cell shaft for 28 mm cells is open.

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Inserting a 28 mm
cell
4.3 Preparing the cell and sample
Standard solutions and test samples are filled into cells for calibration and tur-
bidity measurement with the Turb®750 IR/T.
The quality of the measured values depends on the optimum preparation of
the cell and sample.
Preparing the cell (see section 4.3.1)
– Determine a suitable position in the cell shaft
– Marking a cell
Preparing the sample (see section 4.3.2)
1
2 Insert the marked cell so that it is positioned on the bottom of
the cell shaft.
3 Align the cell marking (3) with the marking (4) of the cell shaft.
The cell is ready to be measured.
3
4

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4.3.1 Preparing the cell
Even completely clean quality cells exhibit tiny differences in their light trans-
mittance, e.g. inhomogeneities of the glass or small defects (e.g. scratches).
Therefore, guidelines for accurate and reproducible measurements (e.g. US
EPA) recommend that you always align the cell in the same way for measur-
ing with the aid of arrows printed on or markings. This refers to sample cells
and cells for calibration standards.
Prior to using a cell for the first time, the suitable position of the cell in the cell
shaft is determined and marked to make sure the optical path is not dis-
turbed. For the following measurements, the cell marking can just be aligned
with the meter marking.
The cell marking should be checked regularly and renewed as necessary.
The cell can be used until no suitable position for the optical path can be
found.
Determining a suit-
able position in the
cell shaft
We recommend that you do not treat any scratches in the cell
with oily liquids (not even with so-called "special silicone oils").
They could unnecessarily soil the meter and your working envi-
ronment. The optimum measurement accuracy is ensured by
aligning the cells. Scratched cells have to be replaced.
1 Clean the cell (see section 5.2.2).
2 Stick the label for the marking onto the cell cap.
3 Fill the cell with a homogeneous solution (e.g. calibration standard
10.0 NTU).
4 Insert the cell (see section 4.2).
5Press and keep the <START/ENTER (.) >key depressed.
Turn the cell slowly and check the measured value:
– The measured value at the position should be no minimum or
maximum.
– At the directly neighboring positions there should not be any
sudden changes of the measured values. The deviations of
measured values at the neighboring positions should not ex-
ceed the following values:
Measured value < 1 NTU: max. +/- 0.02 NTU
Measured value > 1 NTU: max. +/- 2 %
6 Release the <START/ENTER (.) >key.
Measurement starts. The measured value is displayed.

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Marking a cell
4.3.2 Preparing the sample
Venting the sam-
ple
Air bubbles in the sample affect the measuring result to a massive extent be-
cause they have a large scattering effect on the incident light. Larger air bub-
bles cause sudden changes in the measured values whereas smaller air
bubbles are recorded by the instrument as turbidity. Therefore, avoid or re-
move air bubbles:
Avoiding or
removing air bub-
bles
During sampling, ensure all movement is kept to a minimum
If necessary, vent the sample (ultrasonic baths, heating or adding a sur-
face-active substance to reduce the surface tension)
4.4 General operating principles
This section contains basic information on the operation of the Turb®750 IR/
T.
Operating ele-
ments, display
An overview of the operating elements and the display is given in section 1.2
and section 1.3.
Operating modes,
navigation
An overview of the operating modes of the Turb®750 IR/T and the navigation
through menus and functions can be found in section 4.4.1 and section 4.4.2.
4.4.1 Operating modes
The instrument has the following operating modes:
Measurement
The display indicates measurement data in the measured value display
Calibration
The display indicates a calibration procedure with calibration information
Data transmission
The meter transmits measuring datasets or calibration records to the in-
terface
Configuration
The display indicates a menu with further menus, settings and functions
7 Mark the determined position (aligning) of the cell on the label.
The cell is now prepared for all following measuring and calibration
actions.

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4.4.2 Navigation
Measured value
display
In the measured value display, open the menu with <MENU (7) >.
Menus and dialogs The menus for settings and dialogs in procedures contain further subele-
ments. The selection is done with the keys <><>.
The current selection is displayed inverse.
Menus
The name of the menu is displayed at the upper edge of the frame. Menus
are opened by confirming with <START/ENTER (.) >. Example:
Settings
Settings are indicated by a colon. The current setting is displayed on the
right-hand side. With <START/ENTER (.) >, the selection of the possible
settings is opened. Then the setting can be selected with <><>and
confirmed with <START/ENTER (.) >.
Example:
Functions
Functions are designated by the name of the function. They are immedi-
ately carried out by confirming with <START/ENTER (.) >.
Example: display the Calibr. record function
(in the Turbidity menu).
Turbidity
Timer
System
Measured value memory
Configuration
Language:English
Info
Display
Reset
Interface
Continue ...
System

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Messages
Information or operating instructions are designated by the isymbol.
They cannot be selected.
Example:
Entering numerals
with the number
keys.
Keys with additional characters printed on (orange) are assigned doubly. In
the input fields you can directly enter digits with the orange number keys (e.g.
date and time). Complete entering a number with the key <START/ENTER
(.) >.
When entering numeric values with decimal separators (e.g. turbidity nominal
values), pressing <START/ENTER (.) >for the first time will set the decimal
separator. Pressing <START/ENTER (.) >for the second time will complete
the entering of the numeric value. The numeric value is always displayed with
decimal places and, if necessary, rounded.
4.4.3 Navigation example 1: Setting the language
The principles of navigation are explained in the two following
sections by reference of examples:
Setting the language (section 4.4.3)
Setting the date and time (see section 4.4.4).
Calibr. record
Calibr. type 3-P StdCAL
Calibr. interval:90 d
Standard 10.0 FNU/NTU
AQA
Reset
Turbidity
iInsert standard
1000 FNU/NTU
iPress and hold <START>
iAlign sample
Turbidity Calibration
The iindicates
info texts, e.g.
messages, notes or instruc-
tions
The following example describes in the language of the country
how to set the language. On delivery, English is set as the lan-
guage in the Turb®750 IR/T. During initial commissioning, the
language is set in the menu, Configuration / System / Language.

Operation Turb®750 IR/T
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4.4.4 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 val-
ues and calibrating, the current date and time are automatically stored as
1 In the measured value display:
Open the Configuration menu with <MENU (7) >.
The instrument is in the configuration mode.
2 Select the System menu with <><>.
The current selection is displayed in reverse video.
3 Using <START/ENTER (.) >, open the System menu.
4 Select the Language menu with <><>.
The current selection is displayed in reverse video.
5 Open the setting of the Language with <START/ENTER (.) >.
6 Select the required language with <><>.
7 Confirm the setting with <START/ENTER (.) >.
The setting is active. The menu is displayed in the selected language.
8 To make further settings, switch to the next higher menu level with
<ESC>.
Language:English
Measured value memory
Display
Reset
Interface
Continue
System
Language:English
Measured value memory
Display
Reset
Interface
Continue
System

Turb®750 IR/T Operation
19
ba77233d01 04/2020
well.
Numerals are generally entered via the number keys.
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
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).
The date and time are reset to default after a fall of the supply
voltage (empty batteries).
1 In the measured value display:
Open the Configuration menu with <MENU (7) >.
The instrument is in the configuration mode.
2 Select and confirm the System / Continue ... / Date/time menu with
<><>and <START/ENTER (.) >.
3 Select and confirm the Time menu with <><>and <START/EN-
TER (.) >.
A display for the entry of numerals with the number keys opens up.
Time:14:53:40
Date:15.01.20
Date format:dd.mm.yy
Date/time
14:53:40
Time

Operation Turb®750 IR/T
20 ba77233d01 04/2020
4.5 System settings (System menu)
Settings/functions The settings are in the menu, Configuration / System.
Move to the Configuration menu with the <MENU (7) >key.
4 Enter the time using the number keys.
The digit to be changed is displayed underlined.
In the case of wrong entries, you can cancel the procedure with
<ESC>.
After canceling with <ESC>, it is possible to enter all digits once
again. The new digits are only taken over by confirming with
<START/ENTER (.) >.
5 Confirm the setting with <START/ENTER (.) >.
The time is set.
6 Set the current Date as necessary. The setting is made similarly to
that of the time.
7 Change the date format as necessary.
8 To make further settings, switch to the next higher menu level with
<ESC>.
or
Switch to the measured value display with <M (9) >(short pressure).
The instrument is in the measuring mode.
Menu item Setting Explanation
Language Deutsch
English
Français
Español
Select the language (see
section 4.4.3)
Info Information on hardware and
software
Display Illumination
Contrast
Brightness
Switch on/off the display illumi-
nation (see section 4.5.2)
Reset - Reset the system settings to the
delivery condition (see
section 4.11.1).