wtw Turb 355 IR/T Manuel utilisateur
Turb 355 IR/T
ba75454e03 09/2010 41
Operating Manual
Portable turbidimeter
42
Accuracy when
going to press
The use of advanced technology and the high quality
standard of our instruments are the result of a continuous
development. This may result in differences between this
operating manual and your instrument. Also, we cannot
guarantee that there are absolutely no errors in this manual.
Therefore, we are sure you will understand that we cannot
accept any legal claims resulting from the data, figures or
descriptions.
Copyright ©Weilheim 2010, WTW GmbH
Reproduction in whole - or even in part - is prohibited without
the express written permission of WTW GmbH, Weilheim.
Printed in Germany.
Inhaltsverzeichnis
43
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
1.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . 50
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . 53
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . 53
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.1 Instructions for operating . . . . . . . . . . . . . . . . . . . . . 55
4.1.1 Marking and indexing cuvettes . . . . . . . . . . 55
4.1.2 Venting the sample . . . . . . . . . . . . . . . . . . . 57
4.2 Measuring turbidity . . . . . . . . . . . . . . . . . . . . . . . . . 58
4.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
4.3.1 Basic information on calibration . . . . . . . . . . 61
4.3.2 Calibration procedures . . . . . . . . . . . . . . . . 61
4.3.3 Preparing the calibration . . . . . . . . . . . . . . . 62
4.3.4 Three-point calibration . . . . . . . . . . . . . . . . . 63
4.3.5 Partial (user-defined) calibration . . . . . . . . . 66
5 Maintenance, cleaning, disposal . . . . . . . . . . 69
5.1 Changing the batteries . . . . . . . . . . . . . . . . . . . . . . 69
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5.2.1 Cleaning the instrument . . . . . . . . . . . . . . . . 71
5.2.2 Cleaning the cuvettes . . . . . . . . . . . . . . . . . 71
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . 73
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 75
8 Accessories, Options . . . . . . . . . . . . . . . . . . . 77
9 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Inhaltsverzeichnis
44
Overview
45
1Overview
The Turb 355 IR/T enables rapid and reliable turbidity
measurements to be carried out on individual samples.
The measuring method used corresponds to
DIN EN ISO 7027 (Turb 355 IR) or US EPA 180.1
(Turb 355 T).
1Cuvette in the cuvette shaft
2Marking ring for calibration standard
3Mark
4Display
5Keypad
TURB 355 IR
CA L
4283
NTU
FNU
1
2
3
4
5
Overview
46
1.1 Display
The LCD display has the following display elements:
1Calibration symbol - instrument in Calibration mode
2Error symbol - flashes when an error occurs
3Battery symbol - is illuminated if the battery needs to
be changed
4Measuring unit NTU or FNU
5Main line
13
2
4
...8
NTU
FNU
CAL ERR
123
4
5
Overview
47
1.2 Keypad
The Turb 355 IR/T has a keypad with the following 5 keys:
Key Function
Switch measuring instrument on/off
Select calibration standard
Start measurement;
press and hold: index the cell;
release again: start measurement or
calibration
Call up or terminate calibration mode
CAL
Overview
48
Safety
49
2Safety
This operating manual contains basic instructions that you
must follow during the commissioning, operation and
maintenance of the measuring instrument. Consequently,
all responsible personnel must read this operating manual
before working with the measuring instrument.
The operating manual must always be available within the
vicinity of the measuring instrument.
Target group The measuring instrument was developed for
measurements on site and in the laboratory. We assume
that, due to their professional training and experience,
operators are familiar with the safety measures that are
necessary when handling chemicals.
Symbols
used
Caution
indicates instructions that have to be followed to prevent
damage to your instrument.
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g.
Application reports.
Safety
50
2.1 Authorized use
Authorized use consists exclusively of the turbidity
measurement of individual samples on site or in a laboratory
environment.
The technical specifications given in the TECHNICAL DATA
chapter must be observed. Only the operation and running
of the measuring instrument according to the instructions
given in this operating manual is authorized. Any other use
is considered unauthorized.
2.2 General safety instructions
This instrument left the factory in a technically safe and
secure condition.
Function and
operating safety
The smooth functioning and operational safety of the
measuring instrument can only be guaranteed if the
generally applicable safety measures and the specific safety
instructions that appear in this operating manual are
followed during operation.
The smooth functioning and operational safety of the
measuring instrument can only be guaranteed under the
climatic conditions specified in the chapter, TECHNICAL
DATA.
If the instrument was transported from a cold environment to
a warm environment, the formation of condensate can
impair the functioning of the instrument. In this event, wait
until the temperature of the instrument reaches room
temperature before putting the instrument back into
operation.
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