Xylem WTW photoLab 7600 UV-VIS User manual

OPERATING MANUAL
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photoLab®7600 UV-VIS
SPECTROPHOTOMETER

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photoLab®7600 UV-VIS
Copyright © Weilheim 2015, WTW GmbH
Reproduction in whole - or even in part - is prohibited without the
express written permission of WTW GmbH, Weilheim.
Printed in Germany.
The most current version of the present operating manual
is available on the Internet at www.WTW.com.

photoLab®7600 UV-VIS Contents
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Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Overview of the instrument . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.1 Safety information in the operating manual . . . . . 9
2.1.2 Safety signs on the product . . . . . . . . . . . . . . . . . 9
2.1.3 Further documents providing safety information
9
2.2 Safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.2 Requirements for safe operation . . . . . . . . . . . . 10
2.2.3 Unauthorized use . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 User qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4 Handling of hazardous substances . . . . . . . . . . . . . . . . 11
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 General notes on handling . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.1 Inserting the buffer batteries . . . . . . . . . . . . . . . 13
3.2.2 Connecting the power supply . . . . . . . . . . . . . . 13
3.2.3 Switching on the photometer and setting the
language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.4 Set the date and time . . . . . . . . . . . . . . . . . . . . 15
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Switching on or off the photometer . . . . . . . . . . . . . . . . 16
4.2 General operating principles . . . . . . . . . . . . . . . . . . . . . 18
4.2.1 Navigating with function keys and menus . . . . . 18
4.2.2 Display of navigation paths in short form . . . . . 19
4.2.3 Entry of numerals, letters and characters . . . . . 21
4.3 Zero adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4 Measuring in Concentration mode . . . . . . . . . . . . . . . . . 26
4.4.1 Measuring cell tests with barcode . . . . . . . . . . . 26
4.4.2 Measuring reagent tests with AutoSelector . . . . 27
4.5 Measuring the Absorbance / % Transmission . . . . . . . . 29
4.5.1 General information . . . . . . . . . . . . . . . . . . . . . . 29

Contents photoLab®7600 UV-VIS
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4.5.2 Measuring the absorbance or transmission . . . .29
5 Maintenance and cleaning . . . . . . . . . . . . . . . . . . . . . . .31
5.1 Exchanging the buffer batteries . . . . . . . . . . . . . . . . . . . .31
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
5.2.1 Cleaning the enclosure . . . . . . . . . . . . . . . . . . . .32
5.2.2 Cleaning the cell shaft . . . . . . . . . . . . . . . . . . . . .32
5.2.3 Cleaning the detector lens . . . . . . . . . . . . . . . . .33
6 What to do if ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
6.1 Actions in the case of a broken cell . . . . . . . . . . . . . . . . .34
6.2 Error causes and remedies . . . . . . . . . . . . . . . . . . . . . . .35
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
7.1 Measurement characteristics . . . . . . . . . . . . . . . . . . . . . .38
7.2 Measured value documentation and quality assurance . .41
7.3 General meter data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

photoLab®7600 UV-VIS Overview
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1 Overview
1.1 Overview of the instrument
Front of the
instrument
Socket field on the
rear panel
1 Display
2 Keypad
3 Shaft for rectangular cells
4 Turn-up lid
5 Shaft for round cells
6 Cell shaft cover
Fig. 1-1 Front of the instrument with operating elements
2
1
35
6
4
7 Connection for power pack
8 Ethernet connection
9 USB-A connection
10 USB-B connection
Fig. 1-2 Rear panel with socket field
All connections comply with SELV.
78910

Overview photoLab®7600 UV-VIS
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1.2 Keypad
Overview
Key functions The keys on the right side of the keypad have the following functions:
1 Function keys F1 to F4 (function menu-depending)
2 Alphanumeric keypad
3 Keys with dedicated function
Fig. 1-3 Keypad
1
2 3
Key Designation Functions
<ON/OFF> – Switches the photometer on and
off
<HOME> – Switches to the main menu from
any operating situation. Actions
that are not completed are can-
celed.
<PRINT> – Outputs the displayed measured
value to an interface if the
Printer symbol is displayed in the
status line.
<STORE> – Saves a displayed measured
value or spectrum if the Save
symbol is displayed in the status
line.
<ZERO·BLANK> – Starts one of the following mea-
surements, depending on the
operating situation:
- Zero adjustment
- Blank value measurement
- Baseline measurement
- User calibration

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Function keys The function keys F1 to F4 have different functions depending on the
operating situation. The current functions are displayed in the function key
menu at the bottom edge of the display (see section 4.2.1).
<TIMER> – Opens the menu, Timer.
<ESC> – Cancels the running action.
Entries that have not yet been
accepted are discarded.
– Switches to the next higher menu
level.
<START·ENTER> – Starts an action (e.g. measure-
ment)
– Opens a selected menu
– Confirms a selection or entry
(arrow keys)
<>or <>– Moves the selection in menus and
lists one position up or down
<>– When entering characters,
deletes the character left of the
cursor
– Moves the cursor to the left in a
spectrum or kinetic diagram
<>– Moves the cursor to the right in a
spectrum or kinetic diagram
Key Designation Functions

Overview photoLab®7600 UV-VIS
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1.3 Display
Display element
Symbols in the
status line
1 Status line (current state, date and time)
2 Display range for menus and measurement results
3 Function keys menu
Fig. 1-4 Display
1
2
3
Concentration 16.01.15 9:52
1.92 mg/l
18: 14752 NH4-N
10 mm 0.05 - 3.00 mg/l
Setup Method list Citation form Unit
Symbol Designation Function
Save The <STORE> key is active.
You can store the displayed data with
<STORE>.
Printer The <PRINT> key is active.
You can output to an interface the displayed
data with <PRINT>.

photoLab®7600 UV-VIS Safety
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2Safety
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 product. Read this operating manual thoroughly and make yourself
familiar with the product before putting it into operation or working with it. The
operating manual must be kept in the vicinity of the product 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 (irre-
versible) injury or death if the safety instruction is not followed.
CAUTION
indicates a possibly dangerous situation that can lead to slight (revers-
ible) injury if the safety instruction is not followed.
NOTE
indicates a situation where goods might be damaged if the actions mentioned
are not taken.
2.1.2 Safety signs on the product
Note all labels, information signs and safety symbols on the product. A warn-
ing 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 other components of the photoLab®7600 UV-VIS
(accessories)
Safety datasheets for chemicals.

Safety photoLab®7600 UV-VIS
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2.2 Safe operation
2.2.1 Authorized use
The authorized use of the photometer consists exclusively of the carrying out
of photometric measurements according to this operating manual. Follow the
technical specifications of the cells in 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 product may only be operated according to the authorized use spec-
ified above.
The product may only be supplied with power by the energy sources men-
tioned in this operating manual.
The product may only be operated under the environmental conditions
mentioned in this operating manual.
The product may not be opened.
2.2.3 Unauthorized use
The product 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).
2.3 User qualification
Carrying out photometric determinations with the aid of test sets frequently
requires the handling of hazardous substances.
We assume that the operating personnel know how to handle hazardous sub-
stances due to their professional training and experience. The operating per-
sonnel must particularly be able to understand and correctly implement the
safety labels and safety instructions on the packages and inserts of the test
sets.

photoLab®7600 UV-VIS Safety
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2.4 Handling of hazardous substances
When developing test sets, WTW carefully sees that the tests can be carried
out as safely as possible. Some hazards by dangerous substances, however,
cannot always be avoided.
If self-produced tests or solutions are used, the responsibility concerning any
risks caused by those tests or soulutions lies with the user (personal respon-
sibility).
WARNING
Improper handling of certain reagents can cause damage to your
health.
In any case follow the safety labels on the packing and the safety in-
structions of the package insert. Protective measures specified there
have to be followed exactly.
Safety datasheets The safety datasheets of the chemicals comprise all instructions on safe han-
dling, occurring hazards, preventive actions and actions to take in hazardous
situations. Follow these instructions in order to work safely.

Commissioning photoLab®7600 UV-VIS
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3 Commissioning
3.1 General notes on handling
The photoLab®7600 UV-VIS photometer is an optical precision meter.
Therefore, it should always be handled with care, especially in mobile use.
Always protect the meter from conditions that could damage the mechanical,
optical and electronic components. Heed the following points especially:
The temperature and humidity during operation and storage must be
within the limits specified in chapter 7 TECHNICAL DATA.
The following influences always have to be avoided with the meter:
– Extreme dust, moisture and wetness
– Exposure to intensive light and heat
– Fumes that are corrosive or contain high concentrations of solvents.
For measuring, the meter must be placed on a flat surface.
Spilled liquid or other material should be removed immediately (see sec-
tion 5.2 CLEANING).
If a cell has broken in the cell shaft, the cell shaft should be cleaned imme-
diately (see section 6.1 ACTIONS IN THE CASE OF ABROKEN CELL).
The cell shaft should always be closed when the photometer is not used.
During transport of the photometer, the cell shaft has to be empty.
For mobile use we recommend the transport case.
3.2 Initial commissioning
Perform the following activities:
Insert the buffer batteries (see section 3.2.1)
Connect the power supply (see section 3.2.2)
Switch on the photometer (see section 3.2.3)
Set the language (see section 3.2.3)
Set the date and time (see section 3.2.4)
Carry out zero adjustment (see section 4.3)
Packing This photometer is sent out in a protective transport packing.
CAUTION
Keep the original packing including the inner packing to protect the in-
strument against hard shocks if it has to be transported.
The original packing is also required for the proper return of the instru-

photoLab®7600 UV-VIS Commissioning
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ment if it has to be repaired.
Note that damage caused by improper transport voids all warranty
claims.
3.2.1 Inserting the buffer batteries
The buffer batteries supply the integrated clock while the photometer is
switched off. Four alkaline manganese batteries (type AA or Mignon)
separately included in the scope of delivery are used as the buffer batteries.
Insert the batteries as follows:
3.2.2 Connecting the power supply
The power is supplied via the enclosed plug-in power pack. The power pack
supplies the photometer with low voltage (12 VDC).
CAUTION
The line voltage of the usage location must fulfill the specifications stat-
ed on the power pack (the specifications are also given in chapter 7
TECHNICAL DATA). Always use the supplied 12 V original power pack on-
ly.
Before plugging in the power cable check whether it is undamaged.
If the power cable is damaged, the instrument must not be operated.
1Turn the photometer upside down
and place it on a soft surface.
2Open the lid of the battery
compartment (1).
3Insert the four batteries in the
battery compartment. Make sure
that the poles of the batteries are
in the correct position. The ± signs
on the batteries must correspond
to the ± signs in the battery
compartment.
4Close the lid of the battery
compartment.
1

Commissioning photoLab®7600 UV-VIS
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Connecting the
plug-in power pack
3.2.3 Switching on the photometer and setting the language
During the initial commissioning the photometer automatically guides you to
the setting of the meter language after switching on (<ON/OFF>).
After the initial commissioning, you can change the language in the
General setup / Language menu at any time.
1Connect the miniplug of the power
pack to the socket (1) of the pho-
tometer.
2Connect the plug-in power supply
unit to an easily accessible mains
socket.
The display illumination switches
itself on and then off again.
1Select a language with <><>.
2Confirm the selected language
with <START·ENTER>.
The language has been set.
The currently selected language is
marked by a tick.
The display switches to the setting
of Date and Time.
1
General setup 16.01.15 9:52
German
English
Français
Español
Italiano
Bulgarian/Български
Česko
Simplified Chinese/ 中
Traditional Chinese/ 繁
Greek/Ελληνικά

photoLab®7600 UV-VIS Commissioning
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3.2.4 Set the date and time
During the initial commissioning, the instrument automatically guides you to
the setting of the time and date after the setting of the language.
After the initial commissioning, you can change the date and time in the
General setup / Date/Time menu at any time.
The Date/Time menu is open.
Using <><>, select a menu
item and
confirm or open it with
<START·ENTER> .
1Select and confirm Date.
The input field for the current date
pops up.
2Enter the current date with <0...9>
and confirm.
The input field closes.
The date is accepted.
3Select and confirm Time.
The input field for the current time
pops up.
4Enter the current time with <0...9>
and confirm.
The input field closes.
The time is accepted.
Date/Time 16.01.15 9:52
Date 16.01.2015
Time 9:52:09
OK
Date/Time 16.01.15 9:52
Date 16.01.2015
Time 9:52:09
OK
Date
16 .01.2015
Date/Time 16.01.15 9:52
Date 16.01.2015
Time 9:52:09
OK
Time
09 :52 :09

Operation photoLab®7600 UV-VIS
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4Operation
4.1 Switching on or off the photometer
Switching on
Starting the
Self test
Self test During the self-test, all cells must be removed and the cell shaft cover closed.
The self-test runs in the background and may take some minutes.
1Switch the photometer on with
<ON/OFF>.
The display shows
–theSelf test dialog (if the user
management is not active).
or
–theLogin dialog
(if the user management is
active).
With activated user management:
2Login
Enter user name and password or
log in as a guest.
Then the Self test dialog is
displayed.
Self test 16.01.15 9:52
Please make sure no cell is inserted and the cover is closed.
Then press <START/ENTER>
Setup Info
Login 16.01.15 9:52
Enter user name
Administrator
3Remove all cells and close the cell
shaft cover.
4Start the self-test with
<START·ENTER>.
The photometer carries out the
self-test.
Self test 16.01.15 9:52
Please make sure no cell is inserted and the cover is closed.
Then press <START/ENTER>

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Switching off To switch the photometer off, keep the <ON/OFF> key depressed until the
photometer is switched off.
The self-test includes:
– the test of the memory,
processor,
internal interfaces,
filter and lamp
– a calibration for each
wavelength
After the self-test is completed,
the main menu is displayed.
The result of the self-test can be viewed and printed with the
[Info] function key.
Self test 04/16/07 9:52
System test
System test
Filter test
Lamp test
Wavelength calibration

Operation photoLab®7600 UV-VIS
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4.2 General operating principles
4.2.1 Navigating with function keys and menus
The current menu selection is displayed in reverse video. The assignment of the function key
menu is adapted to the current operating situation.
The functions of the function key menu are started with the function keys (F1 ... F4).
Pressthefunctionkey<F1>
([Setup]).
TheGeneralsetupsubmenu
popsup.
Press the <><><><>key.
The menu selec-
tion moves in the
corresponding
direction.
To navigate further, use <><>
<><>and <START·ENTER>
Press the <START·ENTER> key.
This has confirmed the current
selection. A new menu pops up.
Further navigation with function keys
(here: F1 and F2)
General setup 16.01.15 9:52
Language
Date/Time
Display settings
User management
Measured value memory
Software/methods update
Reset
Data transfer/Printer
Exchange methods/profiles
Save all data on USB memory
Unlock application packages
Concentration 16.01.15 9:52
Please select method for measuring
or insert a barcoded cell
or insert AutoSelector.
Setup Method list Last method New Method
<F1>
<><>
<><>
<START·
ENTER>

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Use of the function
keys
The function keys F1 to F4 are below the display. Their functions change
depending on the operating situation and mode. The current functions are
displayed in the function key menu at the bottom edge of the display.
Apart from navigation, the function keys are also used for other operations:
Opening a selection list or input field
Executing a command (directly or with intermediate query)
Switch over between two display options,
such as absorbance transmission
Navigation with
arrow keys
(<><>) and
<START·ENTER>
These operating elements are used to select an item from a menu or list. The
current selection is displayed in reverse video. Pressing of
<START·ENTER> confirms the selection.
Apart from navigation, the <START·ENTER> key is also used for other
operations:
Opening a selection list or input field
Confirming a selection
Confirming entries of text and numerals
Executing a command (directly or with intermediate query)
Activating an item in a selection list (= active)
4.2.2 Display of navigation paths in short form
In this operating manual, the introductory navigation steps leading to
individual menus or dialogs are clearly shown in a gray box. The box
indicates a section of the menu tree.
Starting point of the description is always the main menu, which can be
reached with the <HOME> key from any operating situation. From there
navigation takes place downward.

Operation photoLab®7600 UV-VIS
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Operating example:
Navigation to the
setting menu for the
language
The following example shows the elements of the menu tree with the relevant
operating steps:
Further navigation options:
The <ESC> key moves you one level up in the menu tree.
The <HOME> key directly calls up the main menu.
If you are "lost" in a menu, press <HOME> and restart navigating
from the main menu.
<HOME>
[General setup]
–Language
Bold letters and angle brackets
indicate a key on the photometer
(except function keys).
→Press the "Home" key.
The main menu is called up.
Square brackets in this operating
manual indicate a function key F1
to F4. The text between the
brackets corresponds to the
assignment according to the
function key menu on the bottom
edge of the display.
→Press the function key with the
assignment "Settings"
Text without brackets stands for a
menu item indicated on the
display (list item).
→Select the menu item with the
arrow keys <><>. The
current selection is displayed
in reverse video.
→Then press
<START·ENTER>.