VWR avantor CO-2500L User manual

D
Instruction manual
VWR® CONDUCTIVITY METER CO-2500L
EU cat no 663-0372
Version 1 1 Issue: 12 2021

Legal address of Manufacturer
Europe
VWR International bv,
Researchpark Haasrode 2020
Geldenaaksebaan 464 B- 001 Leuven
+ 216 85011
be.vwr.com
UK Importer:
VWR International Ltd
Hunter Boulevard, Magna Park
Lutterworth, Leicestershire, LE17 4XN
uk.vwr.com
Country of Origin
POLAND

CONTENT
I. Introduction......................................................................................................................1
1. Package content.........................................................................................................2
2. Disclaimer...................................................................................................................2
. Characteristics of the meter........................................................................................
4. The outside view.........................................................................................................4
5. The meter‘s maintenance...........................................................................................6
6. Switching the meter on and off...................................................................................7
6.1. Stabilised reading.............................................................................................8
7. Preparation to work....................................................................................................9
7.1. Choosing the kind of the temperature compensation......................................9
II. Conductivity and salinity measurement.....................................................................10
8. Entering the conductivity parameters.......................................................................11
8.1. Resolution.......................................................................................................12
8.2. Cell number....................................................................................................12
8. . Choosing the unit............................................................................................12
8.4. Calibration points and date.............................................................................14
8.5. Calibration validity time...................................................................................14
8.6. Choosing the type of temperature compensation..........................................14
8.7. Entering the a coefficient................................................................................15
8.8. Entering the reference temperature...............................................................15
8.9. Entering the WTDS coefficient...........................................................................15
9. Maintenance of the conductivity cell.........................................................................16
10. Calibration...............................................................................................................17
10.1. Calibration without standard solution...........................................................18
10.2. Calibration with use of standard solution.....................................................19
10.2.1. Entering the standard solution value..........................................................20
10.2.2. Calibration with automatic temperature compensation..............................21
10.2. . Calibration with manual temperature compensation..................................2
11. Conductivity measurement.....................................................................................25
11.1. Measurement without temperature compensation.......................................25
11.2. Measurement with automatic temperature compensation...........................26
11. . Measurement with manual temperature compensation...............................27
12. Salinity and total dissolved solids measurement....................................................28
12.1. Salinity measurement with conversion to NaCl or KCl.................................29
1 . Notices about temperature compensation............................................................. 0
1 .1. Natural water................................................................................................ 0
1 .2. Ultra pure water............................................................................................ 0
III. Temperature measurement.........................................................................................32
14. Setting the temperature measurement parameters...............................................
14.1. Resolution.....................................................................................................
14.2. Probe number............................................................................................... 4
14. . Sensor group................................................................................................ 4
14.4. Unit............................................................................................................... 4
14.5. Temperature of the manual compensation.................................................. 4
15. Temperature measurement.................................................................................... 5
I . Options.........................................................................................................................36
16. Option screen......................................................................................................... 7
16.1. Function........................................................................................................ 7
16.2. Series............................................................................................................ 8
16. . Miscellaneous............................................................................................... 8
16.4. Info................................................................................................................40

17. Recording the readings, memory readout..............................................................41
17.1. Storage parameters......................................................................................41
17.2. Entering single readings into the memory....................................................42
17. . Collecting measurement series....................................................................4
17.4. Mode of holding readings (HOLD)................................................................44
17.5. Viewing the readings....................................................................................45
18. Calibration report....................................................................................................46
19. Communication with a PC......................................................................................46
20. Technical data........................................................................................................48
21. Ordering information...............................................................................................50
22. Technical service....................................................................................................51
2 . Warranty.................................................................................................................51
24. Equipment disposal................................................................................................52

- 1 -
I. INTRODUCTION

- 2 -
1. PACKAGE CONTENT
1. CO-2500L conductivity meter.
2. Stainless steel temperature sensor
. Plastic body, metal electrodes conductivity cell.
4. 12,90 mS/cm conductivity controlling solution – 50 ml.
5. 5V/1000mA power adapter.
6. Free standing electrode holder.
7. USB cable for connecting with a PC
8. Cartoon box for the meter with accessories.
2. DISCLAIMER
Dear User!
Wide range of functions requires careful reading of the manual, in other
case some of the features may stay unused or using the meter may be
troublesome.
Using electrodes and cells of good quality and replacing them after a suitable
time provides obtaining high measuring accuracy. It is worth remembering that
electrodes have much shorter life time than the meter.
Clean membrane is the main condition of correct readings. After each
measurement the membrane should be rinsed with distilled water. Oil, pastes,
grease, etc., should be removed according to the instructions provided in the
electrode’s manual.
We wish a pleasant and trouble-free work with our meter.
User‘s manual for CO-2500L conductivity meter v1.0x

- -
3. CHARACTERISTICS OF THE METER
CO-2500L waterproof conductivity meter belongs to the newest generation of
measuring devices. The meter provides high accuracy and repeatability of
readings. The meter’s memory is independent from power supply. The meter
is equipped with a large backlit custom LCD, which can simultaneously display
conductivity and temperature readings. Thanks to its touchscreen keyboard
the operation of the meter is very comfortable.
The most important features of CO-2500L are:
- automatic or manual temperature compensation;
-- storing of the calibration date and parameters of three cells;
- wide range of conductivity measurement with six automatically switched
subranges (autorange);
- converting conductivity to salinity in NaCl or KCl (g/l or %) according to
actual dependence to conductivity;
-converting conductivity into TDS (g/l or %) with possibility of introducing the
TDS coefficient;
-measurement of resistivity in *cm;
-automatic introduction of temperature compensation coefficient a for
measurements in natural, pure and ultra pure water;
- calibration of the conductivity cell by introducing the K constant or with use
of 1 - standard solutions;
- possibility of determining K constant of the conductivity cell;
- possibility of introducing the date of calibration validity termination and
signalling its expiry;
-signalising of the reading stabilisation (READY);
-holding the reading on the display (HOLD);
-storing measurement results with time, date and temperature, taken as
single or series of measurements with set time interval;
-possibility to create the last calibration report or reading of last 10 calibration
data of each measuring function in the data transmission software;
-USB output for connecting with PC;
- graphic display with brightness control and touchscreen;
- real time clock with date;
- energy saving mode activated after time set by the user.

- 4 -
4. THE OUTSIDE IEW
On the front wall of the meter there is a graphic LCD placed (Pic. 1), on which
the following readings are displayed:
-conductivity or salinity, TDS, resistivity;
-temperature.
At the top of the LCD the current time and date are displayed.
Choosing particular functions is described in the chapter 16.1. Symbols of the
units are displayed next to the readings.
Pic. 1.
The automatic temperature compensation is signalised by the symbol, the
manual compensation – by the symbol (next to the temperature reading).
Number of the chosen cell is displayed on the left (E1, E2 or E3). It informs,
which of the recorded characteristics will be taken into consideration during
all calculations. Red colour of the electrode number informs about erased
characteristic, yellow – calibration validity date expiry. The parameter screen
of each function displays all parameters entered by the user.
User‘s manual for CO-2500L conductivity meter v1.0x

- 5 -
The button (Pic. 2) placed below the display is used for switching the
meter on and off.
In the back wall of the meter the sockets are placed with the symbols given
below:
temp -RCA (Chinch) socket to connect the temperature probe;
cond -BNC-50 socket for connecting the conductivity cell.
USB -USB socket for connecting with a PC;
power -DC2.5 socket for connecting the power adapter;
Pic. 2.
.

- 6 -
5. THE METER‘S MAINTENANCE
The meter is equipped with a graphic touchscreen. The maintenance consists
in pressing particular keys and windows which appear on the screen. Grey
captions in the windows and keys inform that these elements are not active in
this particular operating mode. Particular keys, connected with the
measurement function (i.e. or ) become active after selecting
the chosen function. To select, press the screen in a freely chosen spot of the
chosen function. Around this spot a frame will be displayed. To deselect,
press the spot again. If the chosen function has a possibility of calibration, the
key becomes active. If it has additional parameters, the key
also becomes active. The key is the only key in the meter that
responds exclusively to a long press (about 2 sec.). It prevents from
accidental erase of the electrode (cell) calibration data.
Entering wrong value, attempt of calibration when the meter doesn‘t
recognise the standard or attempt to turn the meter off when series collecting
proceeds are signalised by a triple warning sound, irrespective of the chosen
sound settings.
Turn the meter on and off with one mechanical button. When a
measurement series is collected, the button is not active until the
process of collecting ends or is stopped.
User‘s manual for CO-2500L conductivity meter v1.0x