Xylem WQL-pH User Manual
Operating manual
pH Logger WQL-pH
PC Program WQL-Log
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DRAFT: Monday, 2. November 2009
pH logger and PC program
to display and evaluate
measurement data from the logger
Note
The latest version of the present operating manual can be found on the
Internet under www.WTW.com.
Copyright © Weilheim 2009, WTW GmbH
Reproduction in whole - or even in part - is prohibited without the
express written permission of WTW GmbH, Weilheim.
Printed in Germany.
WQL-pH Contents
Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
1.1 Logger WQL-pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
1.2 PC program WQL-Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
3.1 Preparing the logger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
3.1.1 General information on the installation of the battery and electrode . . . . . . . . 85
3.1.2 Inserting the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
3.1.3 Installing the electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
3.1.4 Mounting suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
3.2 Installing the WQL-Log program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
3.2.1 PC requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
3.2.2 Installation routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
3.3 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
3.4 Connection types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
3.5 Starting the WQL-Log program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
4 Setting the display (language etc.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
4.1 Setting the language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
4.2 Setting the temperature unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
5 Calibrating for pH measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
5.1 Buffer sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
5.2 Calibration settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
5.3 Calibrating with AutoCal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
5.4 Viewing the calibration records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
6 Measuring directly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
7 Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
7.1 Typical sequence of a logging job (checklist) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
7.2 Setting up a logging job - setting parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
7.3 Setting the parameters and starting the logging job . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
7.4 Signal LED to indicate the operating conditions of the logger . . . . . . . . . . . . . . . . . . . . 121
7.5 Reading in data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
7.6 Overview of the data window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
7.7 Clearing the logger memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
8 Processing measurement data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
8.1 Querying data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
8.2 Exporting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
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9 Info menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
9.1 Database information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
9.2 Device information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
9.3 Program info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
10 Resetting the logger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
11 Maintenance, cleaning, storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
11.1 General maintenance instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
11.2 Exterior cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
11.3 Replacing the electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
11.4 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
11.4.1 Battery service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
11.4.2 Battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
11.5 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
12 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
12.1 Calibration and measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
12.2 Communication of the logger and PC program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
13 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
13.1 Measurement characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
13.2 Application characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
13.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
13.4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
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WQL-pH Overview
111
2
3
4
7
5
6
89
10
Control panel
1 Overview
1.1 Logger WQL-pH
Structure of the
logger
1 Protective hood
2 Electrode
3 Coupling ring
4 Shaft
5 Sleeve
6 Cap
7 Battery compartment with battery
8 Key button
9 Signal LED
10 USB socket
11 Blind plug
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Overview WQL-pH
Recommended
fields of
application
pH measurements in wells, bore holes, rivers, water bodies and other surface
water, drinking water
1.2 PC program WQL-Log
The WQL-Log PC program serves to operate a connected WTW data logger
of the WQL series type. The WQL-Log PC program automatically recognizes
the logger when it is connected to the USB interface and controls the menus
according to the type and measured parameter.
The PC program can carry out the following functions:
z Calibrate the electrode
z Set up and start a logging job
z Measure directly: The logger is connected to the PC via USB and the PC
program displays the current measured values.
z Read in measurement data of the logging job: Consistent data copying to
a PC-based database.
z Database-supported evaluation of measurement data, export functions
Note
The current version of the WQL-Log PC program is available on the Internet
on the site of the manufacturer of your device.
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Fig. 1-1 Overview of the communication of the logger and PC program
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Overview WQL-pH
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WQL-pH Safety
2Safety
This component operating manual provides special instructions that must be
followed during the operation of the logger and PC program.
Always keep this operating manual in the vicinity of the logger and PC
program.
Symbols
used
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. application reports,
operating manuals of electrodes, etc.
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Safety WQL-pH
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3 Commissioning
3.1 Preparing the logger
3.1.1 General information on the installation of the battery and electrode
z Normally, all screw joints of the logger housing can be opened and closed
by hand, without using any tools. If necessary, use a paper towel so you
get a better grip on the parts.
z Install the battery and electrode in a clean and preferably dry environment.
Moisture in the screw joint can affect the functioning of the logger.
Note
Please follow additionally the notes on commissioning in the operating
manual of the electrode.
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Commissioning WQL-pH
1
2
3
3.1.2 Inserting the battery
Note
The logger is powered by a 3.6 V lithium battery, size AA, as provided in the
scope of the delivery (see chapter 13 T
ECHNICAL DATAWQL-Log). Other
batteries of the same size such as alkaline manganese batteries do not
provide the required operational voltage.
Operating time, see section 11.4 B
ATTERY.
Fig. 3-1 Inserting the battery
1 Unscrew the cap (pos. 1 in Fig. 3-1).
2 Unscrew the sleeve (pos. 2).
3 Insert the battery When doing so, make sure that the battery is
correctly positioned (see label in the battery compartment).
4 Screw the sleeve on the shaft with the shorter
thread. At the rear end
of the sleeve there is a thin O-ring inside (pos. 3). Make sure that this
O-ring is evenly positioned in the groove and is not twisted.
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5 Screw on the sleeve and cap again. In the screwed condition, no gap
may be visible at the joints.
After the battery has been inserted the signal LED flashes once per second.
This means the logger has to be connected with the PC to set the date and
time (see section 7.3 S
JOB and section 7.4 SIGNAL LED TO INDICATE THE OPERATING CONDITIONS OF
THE LOGGER).
ETTING THE PARAMETERS AND STARTING THE LOGGING
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Commissioning WQL-pH
1
1
3
2
4
5
6
2
7
8
3.1.3 Installing the electrode
88
Fig. 3-2 Installing the electrode
1 Unscrew the protective hood (pos. 1 in Fig. 3-2).
2 Unscrew the coupling ring (pos. 2).
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3 Pull out the blind plug (pos. 3).
4 Prepare the electrode (pos. 4):
– Make sure that both O-rings (pos. 5 and 6 ) are mounted, clean
and dry.
– Remove the watering cap (pos. 7) and dab dry the shaft of the
electrode with a clean paper towel.
– Position the coupling ring (pos. 2) on the shaft of the electrode.
– Plug on the watering cap (pos. 7) to protect the electrode for the
time of the installation.
5 Insert the thus prepared electrode (pos. 8) in the electrode
receptacle:
– Position the electrode at the opening and, against the pressure of
the air cushion inside, slowly push it in approx. 2 cm, until the air
escapes and the counter pressure is noticeably reduced.
– Then push in the electrode as far as it will go and turn it until the
electrical plug connection locks in place using light pressure. The
electrode is completely inserted when it cannot be turned any
more.
6 Screw on the coupling ring (pos. 2) by hand to the limit.
7 For calibrating and measuring remove the watering cap.
8 Screw on the protective hood (pos. 1 in Fig. 3-2).
Note
The protection hood can be screwed on for transport or storage even if the
watering cap is plugged on. Please follow the notes on the storage of the
electrode in the operating manual of the electrode.
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Commissioning WQL-pH
3.1.4 Mounting suspension
To attach the logger to a rope or chain, a suitable shackle is provided whose
bolt fits through the cross hole in the cap. As an alternative, you can screw
some different sling gear into the M6 threaded hole at the cap end (e.g. M6
eye bolt).
Corrosion
protection
In water, metal (e.g. zinc-plated) parts of the mounting suspension such as
thimbles, shackles or swivel connectors create voltages (chemically caused
according to the electrochemical series), which can cause corrosion of the
stainless steel of the logger or the above mentioned suspension parts.
Lightning
protection
Electrically conductive ropes or chains harbor the danger of the logger being
damaged by lightning.
Recommendation For reasons of corrosion and lightning protection, we recommend to use a
nonconductive suspension, e.g. one with low-wear, resistant polypropylene
ropes.
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3.2 Installing the WQL-Log program
3.2.1 PC requirements
The WQL-Log PC program requires the following system components:
Hardware
requirements
Software
requirements
z Computer with Intel or Pentium III 500 MHz processor or higher (1 GHz or
quicker recommended.)
z At least 192 MB RAM (512 MB recommended)
z Hard disk with at least 600 MB available memory
z CD-ROM drive
z One free USB interface for each measuring instrument to be connected.
z 32-bit
-operating system Windows 2000 Service Pack 4, Windows 7,
Windows Server 2003 and higher, Windows Vista or Windows XP
3.2.2 Installation routine
Note
The software is subject to continuous development. The current version of
the WQL-Log program is available for download on the Internet under http:/
/www.WTW.com.
Note
The following files and/or directories are on the supplied CD-Rom:
Installing the
driver
z The installation file for the PC program and the database server
z A directory with the installation program for the driver of the USB
interface
z A directory with the operating manual for the pH logger and the PC
program.
1 Insert the enclosed CD-Rom in the corresponding disk drive of the
PC.
2 Open the directory, USB_VCP_driver.
3 Execute the file, CP210xVCPInstaller with a double click.
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4 Follow the user guidance (click Install).
5 Confirm the installation with OK. A virtual COM Port has been created
with the installation.
Installing the PC
program and
database server
6 Execute the WQLLog_Vxxxx.exe file with a double click (xxxx =
current version number).
The installation wizard appears.
92
7 Follow the user guidance (click OK).
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8 Check off the checkbox, I accept the licensing terms and conditions.
9Click Next. An information window appears with the components
required for the installation.
10 Click Install. The installation is carried out. Follow the user guidance
(click Next) until the Authentication Mode window appears.
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11 Select the Mixed Mode option.
12 In the Enter password field, enter the password (WTW!2009).
13 Repeat the password entry (WTW!2009) in the Confirm password
field.
Note
The password WTW!2009 must be entered twice. If a different password is
entered, the PC program is not granted access to the database.
14 Click Next. Then follow the user guidance (the default settings should
not be changed) until the following display appears:
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15 Here you can change the location where the PC program should be
stored (click Change... ).
When the required location is displayed, click Next.
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16 Here you find information on the installation. Click Install.
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Commissioning WQL-pH
17 Click Finish to complete the installation.
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3.3 Initial commissioning
1 Start the WQL-Log program (the relevant icon is on the desktop).
The Login window appears.
2 If the WQL-pH logger is connected to the PC via a USB cable and
should communicate with the WQL-Log PC program:
Confirm with OK. The WQL-Log program searches for the connection
with the logger.
3 Confirm with OK.
During the initial commissioning, the Select database window
appears.
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