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Operating manual
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Conductivity meter
Cond 3210
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 meter. 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 2009, WTW GmbH
Reproduction in whole - or even in part - is prohibited without the express
written permission of WTW GmbH, Weilheim.
Printed in Germany.
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Cond 3210 Contents
Cond 3210 - Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 10
3 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.1 Inserting the batteries. . . . . . . . . . . . . . . . . . . . . 13
3.2.2 Switching on the meter. . . . . . . . . . . . . . . . . . . . 14
3.2.3 Setting the date and time . . . . . . . . . . . . . . . . . 14
4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 General operating principles . . . . . . . . . . . . . . . . . . . . . . 16
4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.3 Example 1 on navigation: Setting the language. 19
4.2.4 Example 2 on navigation: Setting the date and
time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3 Sensor-independent settings . . . . . . . . . . . . . . . . . . . . . 24
4.3.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.2 Data storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.3 Automatic Stability control . . . . . . . . . . . . . . . . . 26
4.4 Conductivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4.1 General information . . . . . . . . . . . . . . . . . . . . . . 27
4.4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.4.3 Temperature compensation . . . . . . . . . . . . . . . . 30
4.4.4 Settings for conductivity measuring cells . . . . . . 31
4.4.5 Determining the cell constant
(calibration in control standard) . . . . . . . . . . . . . 34
4.4.6 Displaying calibration records . . . . . . . . . . . . . . 35
4.5 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.5.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.5.2 Displaying and editing the measurement data
storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
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Contents Cond 3210
4.5.3 Erasing the measurement data storage . . . . . . . 39
4.6 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.6.1 Resetting the measurement settings . . . . . . . . . 40
4.6.2 Resetting the system settings. . . . . . . . . . . . . . . 41
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 43
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.1.1 Replacing the batteries. . . . . . . . . . . . . . . . . . . . 43
5.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 48
8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
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Cond 3210 Overview
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1Overview
The Cond 3210 compact precision conductivity meter enables you to
perform conductivity measurements quickly and reliably.
The Cond 3210 provides the maximum degree of operating comfort,
reliability and measuring certainty for all applications.
The proven procedures for determining or adjusting the cell constant
support your work with the conductivity meter.
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1 Keypad
2 Sample display
3 Socket field
5
Overview Cond 3210
ENTER
M
F1
F2
AR
CAL
STO
RCL
Cond 3210
F1
F2
CAL
STO
RCL
1.1 Keypad
In this operating manual, keys are indicated by brackets <..> .
The key symbol (e.g. <ENTER>) generally indicates a short keystroke
(under 2 sec) in this operating manual. A long keystroke (approx.
2 sec) is indicated by the underscore behind the key symbol (e.g.
<ENTER
<F1>:
<F1
_>:
<F2>:
<F2
_>:
<On/Off>: Switches the meter on or off
<M>: Selects the measured parameter
<CAL>:
<CAL
_>:
<STO>:
<STO_>
<RCL>:
<RCL_>
_>).
Softkey providing situation dependent functions , e.g.:
<F1>/[Menu]: Opens the menu for measurement settings
_>/[Menu]: Opens the menu for system settings
<F1
Calls up the calibration procedure
Displays the calibration data
Saves a measured value manually
Displays the manually stored measured values
<▲>: Increments values, scrolls
6
<▼>: Decrements values, scrolls
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Cond 3210 Overview
ENTER
AR
HOLD AR
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<ENTER>:
<ENTER
<AR> Freezes the measured value (HOLD function)
_>:
Opens the menu for measurement settings / confirms
entries
Opens the menu for system settings
Switches the AutoRead measurement on or off
1.2 Display
1 Status information
2 Measured value (with unit)
3 Measured parameter
4 Sensor symbol (calibration evaluation, calibration
interval)
5 Measured temperature (with unit)
6 Status line
7 Softkeys and date + time
Function display
indicators
Error An error occurred during calibration
AR Stability control (AutoRead) is active
HOLD Measured value is frozen (<AR> key)
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Overview Cond 3210
2
1
1.3 Socket field
Connectors:
1 Conductivity measuring cell
2 Service interface
Caution
Only connect measuring cells to the meter that cannot return any
voltages or currents that are not allowed (> SELV and > current
circuit with current limiting).
Almost all customary measuring cells fulfill these conditions.
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Cond 3210 Safety
2 Safety
This operating manual contains basic instructions that you must follow
during the commissioning, operation and maintenance of the meter.
Consequently, all responsible personnel must read this operating
manual before working with the meter.
The operating manual must always be available within the
vicinity of the meter.
Target group The meter was developed for work in the field and in the laboratory.
Thus, we assume that, as a result of their professional training and
experience, the operators will know the necessary safety precautions
to take when handling chemicals.
Safety instructions Safety instructions in this operating manual are indicated by the
warning symbol (triangle) in the left column. The signal word (e.g.
"Caution") indicates the level of danger:
Further notes
Warning
indicates instructions that must be followed precisely in order to
avoid possibly great dangers to personnel.
Caution
indicates instructions that must be followed precisely in order to
avoid the possibility of slight injuries or damage to the meter or
the environment.
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating
manuals.
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Safety Cond 3210
2.1 Authorized use
Authorized use of the meter consists exclusively of the measurement
of conductivity, resistivity, salinity, TDS (total dissolved solids) and
temperature in a laboratory or field environment.
The technical specifications as given in chapter 7 T
ECHNICAL DATA must
be observed. Only the operation and running of the meter according to
the instructions given in this operating manual is authorized.
Any other use is considered unauthorized.
2.2 General safety instructions
This meter is constructed and tested in compliance with the IEC 1010
safety regulations for electronic measuring instruments.
It left the factory in a safe and secure technical condition.
Function and
operational safety
The smooth functioning and operational safety of the meter can only be
guaranteed if the generally applicable safety measures and the specific
safety instructions in this operating manual are followed during
operation.
The smooth functioning and operational safety of the meter can only be
guaranteed under the environmental conditions that are specified in
chapter 7 T
ECHNICAL DATA.
If the meter was transported from a cold environment to a warm
environment, the formation of condensate can lead to the faulty
functioning of the meter. In this event, wait until the temperature of the
meter reaches room temperature before putting the meter back into
operation.
Caution
The meter is only allowed to be opened by authorized personnel.
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Cond 3210 Safety
Safe operation If safe operation is no longer possible, the meter must be taken out of
service and secured against inadvertent operation!
Safe operation is no longer possible if the meter:
z has been damaged in transport
z has been stored under adverse conditions for a lengthy period of
time
z is visibly damaged
z no longer operates as described in this manual.
If you are in any doubt, please contact the supplier of the meter.
Obligations of the
purchaser
The purchaser of this meter must ensure that the following laws and
guidelines are observed when using dangerous substances:
z EEC directives for protective labor legislation
z National protective labor legislation
z Safety regulations
z Safety datasheets of the chemical manufacturers.
Caution
In addition to the safety instructions mentioned here, also follow
the safety instructions of the sensors used.
The operating manuals of the sensors are available on the
supplied CD and on the Internet under www.WTW.com.
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Safety Cond 3210
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Cond 3210 Commissioning
2
1
3 Commissioning
3.1 Scope of delivery
z Conductivity meter Cond 3210
z 4 batteries 1.5 V Mignon type AA
z Short instructions
z CD-ROM with detailed operating manual
3.2 Initial commissioning
Perform the following activities:
z Insert the supplied batteries
z Switch on the meter
z Set the date and time
3.2.1 Inserting the batteries
1 Unscrew the two screws (1) on the underside of the meter.
2 Open the battery compartment (2) on the underside of the
meter.
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3 Place four batteries (type Mignon AA) in the battery
compartment.
13
Commissioning Cond 3210
Note
Alternatively, you can also use Ni-MH rechargeable batteries (type
Mignon AA). In order to charge the batteries, an external charging
device is required.
Caution
Make sure that the poles of the batteries are positioned correctly.
The
± signs on the batteries must correspond to the ± signs in the
battery compartment.
4 Close the battery compartment (2) and tighten the screws (1).
3.2.2 Switching on the meter
1 Press the <On/Off> key.
The meter performs a self-test.
The display shows the manufacturer's logo while the self-test
is being performed.
Subsequently, the meter switches to the measuring mode
(measured value display).
Note
The meter has an energy saving feature to avoid unnecessary battery
depletion.
The energy saving feature switches off the measuring instrument if no
key is pressed during the adjusted interval. (How to set the switch-off
interval, see section 4.3.1).
3.2.3 Setting the date and time
2 See section 4.2.4
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4 Operation
4.1 Switching on the meter
Switching on Press the <On/Off> key.
The meter performs a self-test.
The display shows the manufacturer's logo while the self-test is being
performed.
The measured value display appears.
Switching off Press the <On/Off> key.
Automatic switch-off The instrument has an automatic switch-off function in order to save the
batteries (see section 4.3.1). The automatic switch-off switches off the
measuring instrument if no key is pressed for an adjustable period.
Display illumination The meter automatically switches off the display illumination if no key
is pressed for 15 seconds. The illumination is switched on with the next
keystroke again.
You can also generally switch the display illumination on or off (see
section 4.3.1).
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Operation Cond 3210
4.2 General operating principles
This section contains basic information on the operation of the
Cond 3210.
Operating elements,
display
Operating modes,
navigation
An overview of the operating elements and the display is given in
section 1.1 and section 1.2.
An overview of the operating modes and navigation of the Cond 3210
is given in section 4.2.1 and section 4.2.2.
4.2.1 Operating modes
The meter has the following operating modes:
z Measuring
The measurement data of the connected sensor is shown in the
measured value display
z Calibration
The course of a calibration with calibration information, functions
and settings is displayed
z Storage
The meter stores measuring data manually
z Setting
The system menu or a sensor menu with submenus, settings and
functions is displayed
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Cond 3210 Operation
General
Clock
Service information
Reset
System
22.09.2008
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Back
Language: Deutsch
Beep: Off
Illumination
: On
Contrast: 48 %
Switchoff time: 30 min
General
22.09.2008
08:00
Back
4.2.2 Navigation
Measured value display In the measured value display, you can
z Open the respective measuring menu with <F1> (short
keystroke).
z Open the Storage & config menu with the sensor-independent
settings by pressing <F1
_> (long keystroke, approx. 2 s).
z Change the display in the measurement window by pressing <M>
(e.g. conductivity −> resistivity −> −> −> ).
Menus and dialogs The menus for settings and dialogs in procedures contain further
submenus. The selection is made with the <▲><▼> keys. The current
selection is displayed with a frame.
z Submenus
The name of the submenu is displayed at the upper edge of the
frame. Submenus are opened by confirming with <ENTER>.
Example:
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z Settings
Settings are indicated by a colon. The current setting is displayed on
the right-hand side. The setting mode is opened with <ENTER>.
Subsequently, the setting can be changed with <▲><▼> and
<ENTER>. Example:
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Operation Cond 3210
Calibration record
Calibration interval
: 150 d
ӕ
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Measuring cell
Temp. comp. (TC)
TDS factor 1.00
Stability control On
Temperature unit °C
i
ӕ = 1413 µS/cm
ӕ
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z Functions
Functions are designated by the name of the function. They are
immediately carried out by confirming with <ENTER>.
Example: Display the Calibration record function.
i
Messages Information is marked by the
symbol. It cannot be selected.
Example:
18
Note
The principles of navigation are explained in the two following sections
by reference of examples:
z Setting the language (section 4.2.3)
z Setting the date and time (see section 4.2.4).
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System
Data storage
Storage & config
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Back
4.2.3 Example 1 on navigation: Setting the language
1 Press the <On/Off> key.
The measured value display appears.
The instrument is in the measuring mode.
2 Using <F1_>/[Menu] open the Storage & config menu.
The instrument is in the setting mode.
3 Select the System submenu with <▲><▼>.
The current selection is displayed with a frame.
4 Open the System submenu with <ENTER>.
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Operation Cond 3210
General
Clock
Service information
Reset
System
22.09.2008
08:00
Back
Language: Deutsch
Beep: Off
Illumination: On
Contrast
: 48 %
Switchoff time: 30 min
General
22.09.2008
08:00
Back
Language: Deutsch
Beep: Off
Illumination: On
Contrast
: 48 %
Switchoff time: 30 min
General
22.09.2008
08:00
Back
5 Select the General submenu with <▲><▼>.
The current selection is displayed with a frame.
6 Open the General
submenu with <ENTER>.
7 Open the setting mode for the Language with <ENTER>.
20
8 Select the required language with <▲><▼>.
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Cond 3210 Operation
9 Confirm the setting with <ENTER>.
The meter switches to the measuring mode.
The selected language is active.
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Operation Cond 3210
Date format: dd.mm.yyyy
Date: 30.10.2008
Time
: 14:53:40
Clock
22.09.2008
08:00
Back
4.2.4 Example 2 on navigation: Setting the date and time
The measuring instrument has a clock with a date function. The date
and time are indicated in the status line of the measured value display.
When storing measured values and calibrating, the current date and
time are automatically stored as well.
The correct setting of the date and time and date format is important for
the following functions and displays:
z Current date and time
z Calibration date
z Identification of stored measured values.
Therefore, check the time at regular intervals.
Note
After a fall of the supply voltage (empty batteries), the date and time are
reset to 01.01.2008, 00:00 hours.
Setting the date, time
and date format
The data format can be switched from the display of day, month, year
(dd.mm.yyyy) to the display of month, day, year (mm/dd/yyyy or
mm.dd.yyyy).
1 In the measured value display:
Using <F1
_>/[Menu], open the Storage & config menu.
The instrument is in the setting mode.
2 Select and confirm the System / Clock menu with <▲><▼> and
<ENTER>.
The setting menu for the date and time opens up.
3 Select and confirm the Time menu with <▲><▼> and
<ENTER>.
The hours are highlighted.
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Cond 3210 Operation
4 Change and confirm the setting with <▲><▼> and <ENTER>.
The minutes are highlighted.
5 Change and confirm the setting with <▲><▼> and <ENTER>.
The seconds are highlighted.
6 Change and confirm the setting with <▲><▼> and <ENTER>.
The time is set.
7 If necessary, set the Date and Date format. The setting is made
similarly to that of the time.
8 To make further settings, switch to the next higher menu level
with [Back]<F1>.
or
Switch to the measured value display with <M>.
The instrument is in the measuring mode.
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Operation Cond 3210
4.3 Sensor-independent settings
The Storage & config menu comprises the following settings:
z System (see section 4.3.1).
z Data storage (see section 4.3.2)
4.3.1 System
Overview The following sensor-independent meter characteristics can be
adjusted in the Storage & config/System menu:
z Menu language
z Illumination
z Display contrast
z Interval of the automatic switch-off
z Clock and date function
z Reset of all sensor-independent system settings to the default
condition
Settings To open the Storage & config menu, press the <F1
the measured value display. After completing the settings, switch to the
measured value display with <M>.
Menu item Setting Description
System / General /
Language
System / General /
Illumination
System / General /
Contrast
System / General /
Switchoff time
Deutsch
English
(further)
Auto
On
Off
0 ... 100 % Changing the display
10 min ... 24 h Adjust the switch-off time
Select the menu language
Switching the display
illumination on/off
contrast
_>[Menu] key in
24
System /Clock Time
Date
Date format
System /Service
information
Settings of time and date.
For details, see section
4.2.4
Hardware version and
software version of the
meter are displayed.
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Cond 3210 Operation
Menu item Setting Description
System /Reset - Resets the system settings
to the default values.
For details, see section
4.6.2
4.3.2 Data storage
This menu contains all functions to display, edit and erase stored
measured values and calibration records.
Note
Detailed information on the storage functions of the Cond 3210 is given
in section 4.5.
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Operation Cond 3210
4.3.3 Automatic Stability control
The automatic Stability control (AutoRead) function continuously
checks the stability of the measurement signal.
You can activate or switch off the automatic Stability control function
(see section 4.4.4).
The measured parameter flashes on the display
z as soon as the measured value is outside the stability range
z if you switch over between the measured parameters with <M>.
z if the automatic Stability control is switched off.
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Cond 3210 Operation
4.4 Conductivity
4.4.1 General information
You can measure the following variables:
z Conductivity
z Specific resistance
z Salinity
z Total dissolved solids (TDS)
The measuring instrument is supplied with the following functions:
z AutoRange (automatic switchover of the measurement range). If a
measuring range is exceeded, AutoRange causes the measuring
instrument to automatically change to the next higher measuring
range and back again. Therefore, the instrument always measures
in the measuring range with the highest possible resolution.
z The AutoRead (stability control) function for checking the stability of
the measurement signal. The display of the measured parameter
flashes until a stable measured value is available.
Temperature
measurement
The TetraCon 325, KLE 325, LR 325/01 and LR 325/001 conductivity
measuring cells have an integrated temperature sensor.
Preparatory activities Perform the following preparatory activities when you want to measure:
1 Connect a conductivity measuring cell to the measuring
instrument.
The conductivity measuring window is displayed.
2 Check whether the Measuring cell and cell constant settings
are suitable for the connected conductivity measuring cell. If
necessary, correct the settings.
Note
The selection of the measuring cell and the setting of the cell constant
is done in the measurement settings menu for conductivity (see section
4.4.4). The cell constant to be set must either be taken from the
operating manual of the measuring cell or is printed on the measuring
cell.
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Operation Cond 3210
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4.4.2 Measuring
You can carry out conductivity measurements as follows:
1 Perform the preparatory activities according to section 4.4.1.
2 Immerse the conductivity measuring cell in the test sample.
Selecting the
displayed
measured variable
Freezing the measured
value (HOLD function)
You can switch between the following displays with <M>:
z Conductivity [μS/cm] / [mS/cm]
z Resistivity [Ω·cm] / [kΩ·cm] / [MΩ·cm]
z Salinity SaL [ ]
z Total dissolved solids TDS [mg/l] / [g/l]
The factor to calculate the total dissolved solids is set to 1.00 in the
factory. You can adjust this factor to meet your requirements in the
range of 0.40 to 1.00. The factor can be set in the TDS measuring
menu.
With the HOLD function, you can freeze the current measured value.
The displayed measured value stops changing until you switch the
HOLD function off.
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
Note
If the HOLD function is active, you can, e.g. start a manual
measurement with stability control.
28
2 Release the frozen measured value again with <AR>.
The HOLD function is switched off.
The [HOLD] status display disappears.
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Cond 3210 Operation
Stability control
(AutoRead )
The stability control function (AutoRead) continually checks the stability
of the measurement signal. The stability has a considerable impact on
the reproducibility of measured values. The display of the measured
parameter flashes until a stable measured value is available.
You can start the Stability control manually at any time, irrespective of
the setting for automatic Stability control (see page 26) in the
Measurement menu.
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
2 Using <ENTER>, activate the Stability control function
manually.
The [AR] status indicator appears while the measured value is
assessed as not stable.
The [HOLD][AR] status indicator appears as soon as a stable
measured value is recognized.
Note
You can prematurely terminate the Stability control function manually
with <ENTER> at any time.
Criteria for a stable
measured value
3 Using <ENTER>, start a further measurement with Stability
control.
or
Release the frozen measured value again with <AR>.
The display switches to the measured value display.
The [AR][HOLD] status display disappears.
The Stability control function checks whether the measured values are
stable within the monitored time interval.
Measured
Time interval Stability in the time interval
parameter
Conductivity
ӕ 10 seconds Δ ӕ: better than
0.5% of measured value
Temperature 10 seconds
Δ T (° C): Better than 0.02
The minimum duration until a measured value is assessed as stable is
the monitored time interval. The actual duration is mostly longer.
ba75794e01 01/2009
29
Operation Cond 3210
4.4.3 Temperature compensation
The calculation of the temperature compensation is based on the
preset reference temperature, 20 °C or 25 °C. It appears on the display
as Tr20 or Tr25.
You can select one of the following temperature compensation
methods:
z Nonlinear temperature compensation (nLF)
according to EN 27 888
z Linear temperature compensation (lin)
with adjustable coefficients of 0.000 ... 3.000 %
/K
z No temperature compensation (off)
Note
The reference temperature and temperature compensation are set in
the conductivity measuring menu (see section 4.4.4).
Application tips Select the following temperature compensations given in the table
according to the respective test sample:
Test sample Temperature compensation Display
indicator
Natural water
(ground water, surface
nLF
according to EN 27 888
nLF
water, drinking water)
Ultrapure water nLF
nLF
according to EN 27 888
Other aqueous
solutions
lin
Set linear temperature
lin
coefficient
0.001 ... 3.000 %/K
Salinity (seawater) Automatic nLF according to
Sal, nLF
IOT
30
ba75794e01 01/2009
Cond 3210 Operation
4.4.4 Settings for conductivity measuring cells
Overview The following settings are possible for conductivity measuring cells:
z Calibration record (display)
z Calibration interval
z Measuring cell/cell constant
z Reference temperature
z Temperature compensation
z TDS factor
z Unit of the temperature
z Automatic Stability control
Settings The settings are made in the measuring menu of the conductivity
measurement. To open the settings, activate the relevant measuring
window in the measured value display and press the <F1>/[menu] or
<ENTER> key shortly. After completing the settings, switch to the
measured value display with <M>.
Menu item Possible
setting
Calibration /
- Displays the calibration
Calibration record
Calibration /
1 ... 999 d Calibration interval for the
Calibration interval
Description
record of the last calibration.
measuring cell (in days).
The meter reminds you to
calibrate regularly by the
flashing sensor symbol in
the measuring window.
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Operation Cond 3210
Menu item Possible
setting
Measurement /
Measuring cell /
Type
Cal Measuring cells the cell
LR325/01 LR 325/01 measuring cell,
Description
Measuring cell used
constant of which is
determined by calibration in
the KCL control standard
solution.
Calibration ranges:
0.450 to 0.500 cm
0.800 to 0.880 cm
-1
and
-1
The currently valid cell
constant is displayed in the
status line.
nominal cell constant
0.100 cm
-1
.
The cell constant can be
adjusted in the range from
0.090 to 0.110 cm
-1
.
Measurement /
Measuring cell /
Cell const. man
Measurement /
Measuring cell /
Cell const. LR325/01
Measurement /
Temp. comp. (TC) /
Method
LR325/001 LR 325/001 measuring cell,
nominal cell constant
-1
0.010 cm
.
The cell constant is
permanently set.
man Any measuring cells with
freely adjustable cell
constants in the range from
-1
.
0.250 to
25.000 cm
0.250 to 25.000 cm
Display and setting option of
-1
the cell constant of any
measuring cells (man).
0.090 to
0.110 cm
-1
Display and setting option of
the cell constant of the
LR 325/01 measuring cell.
nLF
lin
Off
Procedure for temperature
compensation (see section
4.4.3).
This setting is only available
for the measured
parameters,
ӕ und ρ .
32
ba75794e01 01/2009
Cond 3210 Operation
Menu item Possible
setting
Measurement /
Temp. comp. (TC) /
0.000 ...
3.000 %/K
Linear coeff.
Measurement /
Temp. comp. (TC) /
20 °C
25 °C
Reference temp.
Measurement /TDS
0.40 ... 1.00 Factor for TDS value
factor
Measurement /
On /Off Switches on or off the
Stability control
Measurement /
Temperature unit
°C
°F
Description
Coefficient of the linear
temperature compensation.
This setting is only available
when the linear temperature
compensation is set.
Reference temperature
This setting is only available
for the measured
parameters,
ӕ und ρ .
automatic stability control
during measurement (see
section 4.3.3)
Temperature unit,
degrees Celsius or degrees
Fahrenheit.
All temperatures are
displayed with the selected
unit.
Reset - Resets all sensor settings to
the delivery condition (see
section 4.6.1).
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Operation Cond 3210
4.4.5 Determining the cell constant (calibration in control standard)
Why determine the cell
constant?
Procedure You can determine the actual cell constant of the conductivity
AutoRead
(stability control)
Aging slightly changes the cell constant, e. g. by coatings. As a result,
an inexact measured value is displayed. The original characteristics of
the cell can often be restored by cleaning the cell. Calibration
determines the current value of the cell constant and stores this value
in the meter.
Thus, you should calibrate at regular intervals (we recommend: every
6 months).
measuring cell by calibrating with the control standard in the following
ranges:
z 0.450 ... 0.500 cm
-1
(e.g. TetraCon 325, nominal cell constant 0.475)
z 0.800 ... 0.880 cm
-1
(cells with a cell constant of approx. 0.840)
The cell constant is determined in the control standard, 0.01 mol/l KCl.
Cell constants outside the ranges quoted above cannot be calibrated.
In the delivery condition, the calibrated cell constant of the meter is set
to 0.475 cm
-1
(conductivity measuring cell, TetraCon 325).
The calibration procedure automatically activates the AutoRead
(stability control) function.
Display calibration data You can have the data of the last calibration displayed (see section
4.4.6).
Calibration evaluation After the calibration, the measuring instrument automatically evaluates
the current status of the calibration. The evaluation appears on the
display and in the calibration record.
Display Calibration
Cell constant [cm
-1
]
record
+++ within the ranges
0.450 ... 0.500 cm
-1
or
-1
-1
-1
Error Error
Eliminate the error according to
chapter 6 W
HAT TO DO IF...
0.800 ... 0.880 cm
outside the ranges
0.450 ... 0.500 cm
or
0.800 ... 0.880 cm
34
ba75794e01 01/2009
Cond 3210 Operation
ӕ
0.839
1/cm
25.1
°C
[Tr25][nLF][ 0.835 1/cm]
22.09.2008
08:00
Menu
Determining the cell
constant
For this calibration procedure, the Measuring cell setting must be set to
cal in the measuring menu. Proceed as follows to determine the cell
constant:
1 Connect a conductivity measuring cell to the measuring
instrument.
2 In the measured value display, select the conductivity
parameter with <M>.
3 Start the calibration with <CAL>.
The cell constant that was calibrated last is displayed.
Displaying the
calibration record
4 Immerse the conductivity measuring cell in the control standard
solution, 0.01 mol/l KCI.
5 Start the measurement with <ENTER>.
The [AR] status indicator is displayed. The measured
parameter flashes.
6 Wait for the end of the AutoRead measurement or accept the
calibration value with <ENTER>.
The calibration record is displayed.
7 Using <F1>/[Continue] or <ENTER>, switch to the measured
value display.
4.4.6 Displaying calibration records
The calibration record of the last calibration is to be found under the
menu item, Calibration / Calibration record. To open it in the measured
value display, press the <CAL
_> key.
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Operation Cond 3210
4.5 Data storage
You can transmit measured values (datasets) to the data storage:
z Manual storage (see section 4.5.1)
Measurement dataset A complete dataset consists of:
z ID number
z Date/time
z Measured value of the connected sensor
z Measured temperature value of the connected sensor
z AutoRead info: AR appears with the measured value if the
AutoRead criterion was met while storing (stable measured value).
Otherwise, the AR display is missing.
z Calibration evaluation: +++, ++, +, -, or no evaluation
Storage locations The Cond 3210 meter has a measurement data storage.
Storage Maximum number of datasets
Manual data storage 200
36
ba75794e01 01/2009
Cond 3210 Operation
Data record: 4 From 200
30.10.2008 11:24:16
ӕ 1415 µS/cm 25.1 °C AR +++
C = 0.835 1/cm, Tref 25, nLF
ID number: 1
Continue
Manual data storage
22.09.2008
08:00
Back
Data storage full. Erase?
Yes
No
Warning
22.09.2008
08:00
Back
4.5.1 Manual storage
You can transmit a measurement dataset to the data storage as
follows.
1 Press the <STO> key shortly.
The menu for manual storage appears.
2 If necessary, change and confirm the ID number (1 ... 10000)
with <▲><▼> and <ENTER>.
The dataset is stored. The meter switches to the measured
value display.
If the storage is full The following window appears if all 200 storage locations are occupied:
You have the following options:
z To erase the entire storage, confirm Yes.
ba75794e01 01/2009
z To cancel the storage process and switch to the measured value
display, confirm No.
37
Operation Cond 3210
Manual data storage (200)
Data record 3 of 64
30.10.2008 11:24:16
ID number:1
ӕ 1415 µS/cm 25.1 °C AR +++
C = 0.835 1/cm, Tref 25, nLF
22.09.2008
08:00
Back
4.5.2 Displaying and editing the measurement data storage
The contents of the manual measurement data storage can be shown
on the display.
The measurement data storage has a function to erase the entire
contents.
Editing the data storage The storage is edited in the menu, Storage & config/ Data storage. To
open the Storage & config menu, press the <F1
_>[Menu] key in the
measured value display. Open the manual storage directly with the
<RCL> key.
Settings
Display presentation
of a dataset
Menu item Setting/
function
Data storage /
- Displays all measurement
Manual data storage /
Display
Data storage /
- Erases the entire manual
Manual data storage /
Erase
Description
datasets page by page.
Further options:
z Scroll through the
datasets with <▲><▼>.
z Quit the display with
<F1>/[Back].
measurement data
storage.
Note:
All calibration data remains
stored when this action is
performed.
Quitting the display To quit the display of stored measurement datasets, you have the
38
ba75794e01 01/2009
Cond 3210 Operation
following options:
z Switch directly to the measured value display with <M>.
z Quit the display and move to the next higher menu level with <F1>/
[Back].
4.5.3 Erasing the measurement data storage
How to erase the measurement data storage is described in section
4.5.2 D
ISPLAYING AND EDITING THE MEASUREMENT DATA STORAGE.
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39
Operation Cond 3210
4.6 Reset
You can reset (initialize) all sensor settings and sensor-independent
settings separately from each other.
4.6.1 Resetting the measurement settings
Note
The calibration data are reset to the default settings together with the
measuring parameters. Recalibrate after performing a reset.
The following settings for conductivity measurements are reset to the
default settings with the Reset function:
Setting Default settings
Cal. interval 150 d
Measured parameter ӕ
-1
Cell constant (c) 0.475 cm
0.475 cm
(calibrated)
-1
(set up)
Temperature compensation nLF
Reference temperature 25 °C
Temperature coefficient (TC) of
2.000 %/K
the linear temperature
compensation
TDS factor 1.00
Stability control On
Temperature unit °C
The sensor settings are reset under the Reset menu item in the
measuring menu. To open the settings, activate the relevant measuring
window in the measured value display and press the <F1>[Menu] key
shortly
.
40
ba75794e01 01/2009
Cond 3210 Operation
4.6.2 Resetting the system settings
The following system settings can be reset to the delivery status:
Setting Default settings
Language English
Beep On
Contrast 50 %
Illumination On
Switchoff time 1 h
The system settings are reset in the menu, Storage & config / System
/ Reset. To open the Storage & config menu, press the <F1
key in the measured value display.
_>[Menu]
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Operation Cond 3210
42
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Cond 3210 Maintenance, cleaning, disposal
2
1
5 Maintenance, cleaning, disposal
5.1 Maintenance
The only maintenance activity required is replacing the batteries.
Note
See the relevant operating manuals of the measuring cells for
instructions on maintenance.
5.1.1 Replacing the batteries
1 Unscrew the two screws (1) on the underside of the meter.
2 Open the battery compartment (2) on the underside of the
meter.
ba75794e01 01/2009
3 Remove the four batteries from the battery compartment.
4 Place four new batteries (type Mignon AA) in the battery
compartment.
Note
Alternatively, you can also use Ni-MH rechargeable batteries (type
Mignon AA). In order to charge the batteries, an external charging
device is required.
Caution
Make sure that the poles of the batteries are positioned correctly.
The
± signs on the batteries must correspond to the ± signs in the
battery compartment.
43
Maintenance, cleaning, disposal Cond 3210
5 Close the battery compartment (2) and tighten the screws (1).
5.2 Cleaning
Occasionally wipe the outside of the measuring instrument with a
damp, lint-free cloth. Disinfect the housing with isopropanol as
required.
Caution
The housing is made of synthetic material (ABS). Thus, avoid
contact with acetone or similar detergents that contain solvents.
Remove any splashes immediately.
5.3 Packing
This meter is sent out in a protective transport packing.
We recommend: Keep the packing material. The original packing
protects the meter against damage during transport.
5.4 Disposal
Note
This meter contains batteries. Batteries that have been removed must
only be disposed of at a recycling facility set up for this purpose or via
the retail outlet.
It is illegal to dispose of it in household refuse.
44
ba75794e01 01/2009
Cond 3210 What to do if...
6 What to do if...
Error message,
OFL
Error message,
Error
Sensor symbol flashes
Display
Cause Remedy
– Measured value outside the
measuring range
Cause Remedy
– Measuring cell contaminated – Clean cell and replace it if
– Calibration solution not suitable – Check calibration solutions
Cause Remedy
– Cleaning interval expired – Recalibrate the measuring
Cause Remedy
– batteries almost empty – Replace the batteries (see
– Use suitable measuring cell
necessary
system
section 5.1 M
AINTENANCE)
Meter does not react to
keystroke
You want to know which
software
version is in the meter
ba75794e01 01/2009
Cause Remedy
– Operating condition undefined
or EMC load unallowed
Cause Remedy
– E. g., a question by the service
department
– Processor reset:
Press the <ENTER> and
<On/Off> key
simultaneously
– Switch on the meter.
Open the menu,
_>[Menu] / Storage &
<F1
config / System / Service
information. The instrument
data is displayed.
45
What to do if... Cond 3210
46
ba75794e01 01/2009
Cond 3210 Technical data
7 Technical data
7.1 General data
Dimensions approx. 180 x 80 x 55 mm
Weight approx. 0.4 kg
Mechanical structure Type of protection IP 67
Electrical safety Protective class III
Test certificates CE
Ambient
conditions
Power
supply
Guidelines
and norms used
Storage - 25 °C ... + 65 °C
Operation -10 °C ... + 55 °C
Climatic class 2
Batteries 4 x 1.5 V alkali-manganese batteries, type
AA
Rechargeable
batteries
Operational life up to 800 h without / 100 h with illumination
EMC EC directive 2004/108/EC
Meter safety EC directive 2006/95/EC
Climatic class VDI/VDE 3540
IP protection class EN 60529
4 x 1,2 V NiMH rechargeable batteries,
type AA
(no charging function)
EN 61326-1
EN 61000-3-2
EN 61000-3-3
FCC Class A
EN 61010-1
ba75794e01 01/2009
47
Technical data Cond 3210
7.2 Measuring ranges, resolution, accuracy
Measuring ranges,
resolution
Parameter Measuring range Resolution
ӕ [µS/cm] 0.000 ... 1.999*
0.00 ... 19.99**
0.0 ... 199.9
200 ... 1999
ӕ [mS/cm] 2.00 ... 19.99
20.0 ... 199.9
200 ... 1000
(Resistivity)
ρ
[Ohm*cm]
0.00 ... 9.99
10.0 ... 99.9
100 ... 999
(Resistivity)
ρ
[kOhm*cm]
1.00 ... 9.99
10.0 ... 99.9
100 ... 999
ρ
(Resistivity)
[MOhm*cm]
1.00 ... 9.99
10.0 ... 99.9
100 ... 999
SAL 0.0 ... 70.0
0.001
0.01
0.1
1
0.01
0.1
1
0.01
0.1
1
0.01
0.1
1
0.01
0.1
1
0.1
according to the IOT
table
TDS 0 ... 1999 mg/l
T [°C] − 5.0 ... + 105.0 0.1
T [°F] + 23.0 ... + 221.0 0.1
* only possible with cells of the cell constant, 0.010 cm
** only possible with cells of the cell constant, 0.010 cm-1 or 0.090 ... 0.110 cm
Cell constants Cell constant C Values
Can be calibrated in
the ranges
Adjustable 0.010 cm-1 (fixed)
Reference temperature Reference
temperature
Adjustable 20 °C (Tref20)
0 ... 19.99 g/l
0 ... 199.9 g/l
0.450 ... 0.500 cm
0.800 ... 0.880 cm
0.090 ... 0.110 cm
0.250 ... 25.000 cm
Values
25 °C (Tref25)
1
0.01
0.1
-1
-1
-1
-1
-1
-1
48
ba75794e01 01/2009
Cond 3210 Technical data
Accuracy (± 1 digit) Parameter Accuracy Temperature of the test
sample
ӕ and
ρ
/ temperature compensation
None (Off) ± 0.5 %
Nonlinear (nLF) ± 0.5 % 0 °C ... + 35 °C
according to EN 27 888
± 0.5 % + 35 °C ... + 50 °C
enhanced nLF function
Linear (lin) ± 0.5 % + 10 °C ... + 75 °C
SAL / range
0.0 ... 42.0 ± 0.1 + 5 °C ... + 25 °C
± 0.2 + 25 °C ... + 30 °C
TDS [mg/l]
± 0.5 %
T [°C] / temperature sensor
NTC 30 ± 0.2
PT 1000 ± 0.3
Note
The accuracy values specified here apply exclusively to the meter. The
accuracy of the measuring cell has also to be taken into account.
ba75794e01 01/2009
49
Technical data Cond 3210
FCC Class A Equipment Statement
Note: This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is
operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to
correct the interference at his own expense.
Changes or modifications not expressly approved by the
manufacturer could void the user‘s authority to operate the
equipment.
50
ba75794e01 01/2009
Cond 3210 Lists
8Lists
This chapter provides additional information and orientation aids.
Specialist terms The glossary briefly explains the meaning of the specialist terms.
However, terms that should already be familiar to the target group are
not described here.
Index The index will help you to find the topics that you are looking for.
Glossary
Adjusting To manipulate a measuring system so that the relevant value (e. g. the
displayed value) differs as little as possible from the correct value or
a value that is regarded as correct, or that the difference remains
within the tolerance.
AutoRange Name of the automatic selection of the measuring range.
Calibration Comparing the value from a measuring system (e. g. the displayed
value) to the correct value or a value that is regarded as correct.
Often, this expression is also used when the measuring system is
adjusted at the same time (see adjusting).
Cell constant, k Characteristic quantity of a conductivity measuring cell, depending on
the geometry.
Conductivity Short form of the expression, specific electrical conductivity.
It corresponds to the reciprocal value of the resistivity.
It is a measured value of the ability of a substance to conduct an
electric current. In water analysis, the electrical conductivity is a
dimension for the ionized substances in a solution.
Measured parameter The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or D.O. concentration.
Measured value The measured value is the special value of a measured parameter to
be determined. It is given as a combination of the numerical value and
unit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K).
Molality Molality is the quantity (in Mol) of a dissolved substance in 1000 g
solvent.
ba75794e01 01/2009
51
Lists Cond 3210
α
T
Ref
=
Meas
*
1
1+
a
(T - )
*
T
Ref
Reference
temperature
Fixed temperature value to compare temperature-dependent
measured values. For conductivity measurements, the measured
value is converted to a conductivity value at a reference temperature
of 20 °C or 25 °C.
Reset Restoring the original condition of all settings of a measuring system.
Resistance Short name for the electrolytic resistivity. It corresponds to the
reciprocal value of the electrical conductivity.
Resolution Smallest difference between two measured values that can be
displayed by a meter.
Salinity The absolute salinity S
of seawater corresponds to the relationship
A
of the mass of dissolved salts to the mass of the solution (in g/Kg). In
practice, this dimension cannot be measured directly. Therefore, the
practical salinity according to IOT is used for oceanographic
monitoring. It is determined by measuring the electrical conductivity.
Salt content General designation for the quantity of salt dissolved in water.
Stability control Function to control the measured value stability.
Standard solution The standard solution is a solution where the measured value is
known by definition. It is used to calibrate a measuring system.
Temperature
Value of the slope of a linear temperature function.
coefficient
Temperature
compensation
Name of a function that considers the temperature influence on the
measurement and converts it accordingly. Depending on the
measured parameter to be determined, the temperature
compensation functions in different ways. For conductimetric
measurements, the measured value is converted to a defined
reference temperature. For potentiometric measurements, the slope
value is adjusted to the temperature of the test sample but the
measured value is not converted.
Temperature function Name of a mathematical function expressing the temperature
behavior of a test sample, a probe or part of a probe.
Test sample Designation of the test sample ready to be measured. Normally, a test
sample is made by processing the original sample. The test sample
and original sample are identical if the test sample was not processed.
52
ba75794e01 01/2009
Cond 3210 Lists
Index
A
Authorized use . . . . . . . . . . . . . . . . . . . . . . 10
Automatic switch-off . . . . . . . . . . . . . . . . . . 15
AutoRead . . . . . . . . . . . . . . . . . . . . . . . . . . 29
B
Battery compartment . . . . . . . . . . . . . . 13, 43
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . 34
Calibration evaluation . . . . . . . . . . . . . . . . 34
Cell constant . . . . . . . . . . . . . . . . . . . . . . . 34
Control standard . . . . . . . . . . . . . . . . . . . . 34
D
Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Date and time . . . . . . . . . . . . . . . . . . . . . . . 22
Default settings
Measured parameter . . . . . . . . . . . . . . 40
System settings . . . . . . . . . . . . . . . . . . 41
E
Energy saving feature . . . . . . . . . . . . . . . . 14
O
Operational safety . . . . . . . . . . . . . . . . . . . 10
P
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 9
R
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
S
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Sample display . . . . . . . . . . . . . . . . . . . . . . 7
Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Scope of delivery . . . . . . . . . . . . . . . . . . . . 13
Setting the date . . . . . . . . . . . . . . . . . . . . . 14
Setting the time . . . . . . . . . . . . . . . . . . . . . 14
Socket field . . . . . . . . . . . . . . . . . . . . . . . . . 8
Stability control
automatic . . . . . . . . . . . . . . . . . . . . . . . 26
T
Temperature compensation . . . . . . . . . . . . 30
Temperature measurement . . . . . . . . . . . . 27
I
Initial commissioning . . . . . . . . . . . . . . 13, 14
Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
K
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
M
Measured value display . . . . . . . . . . . . . . . 17
Measurement data memory
Edit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Erase . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Storage locations . . . . . . . . . . . . . . . . . 36
Measurement dataset . . . . . . . . . . . . . . . . 36
Measuring . . . . . . . . . . . . . . . . . . . . . . . . . 28
Measuring menu . . . . . . . . . . . . . . . . . . . . 31
Menus (navigation) . . . . . . . . . . . . . . . . . . 17
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 18
ba75794d01 01/2009
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Wissenschaftlich-Technische Werkstätten GmbH
Dr.-Karl-Slevogt-Straße 1
D-82362 Weilheim
Germany
Tel: +49 (0) 881 183-0
+49 (0) 881 183-100
Fax: +49 (0) 881 183-420
E-Mail: Info@WTW.com
Internet: http://www.WTW.com
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