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

photoLab®7600 UV-VIS Overview
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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.