Inolab pH level 2 Manual de usuario
INSTRUCTION MANUAL
pH meter
Model : pH level 2
Brand :
inoLab
pH Level 2
ba12218e04 10/2002 71
Operating Manual
Laboratory pH meter
72
Accuracy when
going to press
The use of advanced technology and the high quality stan-
dard of our instruments are the result of continuous devel-
opment. This may result in differences between this
operating manual and your instrument.
We cannot guarantee that there are absolutely no errors in
this manual. We are sure you will understand that we cannot
accept any legal claims resulting from the data, figures or
descriptions.
Warranty declara-
tion
The designated instrument is covered by a warranty of three
years from the date of purchase.
The instrument warranty extends to manufacturing faults
that are determined within the period of warranty.
The warranty excludes components that are replaced during
maintenance such as batteries, etc.
The warranty claim extends to restoring the instrument to
readiness for use but not, however, to any further claim for
damages. Improper handling or unauthorized opening of the
instrument invalidates any warranty claim.
To ascertain the warranty liability, return the instrument and
proof of purchase together with the date of purchase freight
paid or prepaid.
Copyright ©Weilheim 2002, WTW GmbH & Co. KG
Reprinting - even as excerpts - is only allowed with the ex-
plicit written authorization of WTW GmbH & Co. KG, Weil-
heim.
Printed in Germany.
List of contents
73
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
1.1 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
1.3 Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . .80
2.2 General safety instructions . . . . . . . . . . . . . . . . . .80
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . 83
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . .83
3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . .83
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
4.1 Switch on the instrument . . . . . . . . . . . . . . . . . . . .85
4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
4.2.1 Measuring the pH value . . . . . . . . . . . . . . .88
4.2.2 Measuring the Redox voltage . . . . . . . . . . .89
4.2.3 Transmitting measured values . . . . . . . . .90
4.3 Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
4.3.1 Calibration interval (Int 3) . . . . . . . . . . . . . .94
4.3.2 AutoCal TEC . . . . . . . . . . . . . . . . . . . . . . .95
4.3.3 AutoCal DIN . . . . . . . . . . . . . . . . . . . . . . . .98
4.3.4 ConCal . . . . . . . . . . . . . . . . . . . . . . . . . . .101
4.4 Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
4.4.1 Manual storage . . . . . . . . . . . . . . . . . . . . .104
4.4.2 Switching on AutoStore (Int 1) . . . . . . . . .106
4.4.3 Outputting the data storage . . . . . . . . . . .108
4.4.4 Clearing the storage . . . . . . . . . . . . . . . . .111
4.5 Data transmission . . . . . . . . . . . . . . . . . . . . . . . .112
4.5.1 Data transmission interval (Int 2) . . . . . . .112
4.5.2 Recorder (analog output) . . . . . . . . . . . . .114
4.5.3 PC/external printer (RS232 interface) . . .115
4.5.4 Remote control . . . . . . . . . . . . . . . . . . . . .116
4.6 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
4.7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
List of contents
74
5 Maintenance, cleaning, disposal . . . . . . . . . . . 123
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . 125
7 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . 129
8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
9 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Overview
75
1Overview
The compact inoLab pH Level 2 precision pH meter lets you
perform pH measurements rapidly and reliably. The inoLab
pH Level 2 provides the highest degree of operating com-
fort, reliability and measuring safety for all applications.
The proven MultiCal®calibration procedures and
special AutoRead function support your work with the pH
meter.
Note
The measuring instrument can also be delivered as part of
a set.
Information on this and other accessories is available in the
WTW catalog LABORATORY AND FIELD INSTRUMENTATION or
via the Internet.
1Keypad
2Display
3Sockets
3
2
1
Overview
76
1.1 Keyboard
1Call up calibration procedure
2Select measuring mode
3Display or transmit measured values
4Measuring instrument ON/OFF
5Activate/deactivate AutoRead function
6Store measured value
7Increase values, scroll
8Confirm inputs, start AutoRead
9Reduce values, scroll
1
2
6
7
8
3
4
5
9
Overview
77
1.2 Display
1.3 Sockets
Caution
Only connect probes to the instrument that cannot feed ex-
cessive voltages or currents (> SELV and > circuit with cur-
rent limiter).
Connectors:
1pH electrode
2Temperature probe
3Reference electrode
4RS 232 interface / analog output
5Plug-in power supply
Status line
Measured value display
Function and
temperature display
12
3
4
5
Overview
78
Safety
79
2 Safety
This operating manual contains basic instructions that you
must follow during the commissioning, operation and main-
tenance of the instrument. Consequently, all responsible
personnel must read this operating manual before working
with the instrument.
The operating manual must always be available within the
vicinity of the instrument.
Target group This measuring instrument was developed for use in the lab-
oratory.
Thus, we assume that, as a result of their professional train-
ing and experience, the operators will know the necessary
safety precautions to take when handling chemicals.
Symbols used
Caution
indicates instructions that have to be followed to prevent
damage to your instrument.
Warning
indicates instructions that have to be followed to protect
yourself and the instrument from dangerous electrical volt-
age.
Note
Indicates notes that draw your attention to special features.
Note
Indicates cross-references to other documents, e.g. appli-
cation reports, operating manuals of combination elec-
trodes, etc.
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