Consort C861 User manual

C861
C862
C863
C864
C868
December 2008
Consort
MANUAL
HANDLEIDING
MODE D’EMPLOI
ANLEITUNG

Table of contents
Introduction ...................................... 1
Manufacturer ..................................... 1
Warranty .......................................... 1
Servicing........................................... 1
AC adaptor........................................ 1
Keyboard .......................................... 1
Computer interface ............................. 2
Inputs .............................................. 2
Recorder output.................................. 2
Digital output..................................... 2
System ............................................. 2
Date and Time.................................... 2
Recorder........................................... 2
Password .......................................... 2
pH measurement................................. 3
mV measurement ................................ 3
rH2 measurement ............................... 3
Temperature measurement .................... 3
Important ......................................... 3
Conductivity measurement..................... 4
Resistivity measurement........................ 4
Salinity measurement ........................... 4
µW measurement ................................ 4
TDS measurement ............................... 4
Dissolved oxygen measurement ............... 5
%O2 measurement ............................... 5
Air pressure measurement ..................... 5
Principle ........................................... 5
Interferences ..................................... 5
Maintenance of pH electrodes................. 6
Maintenance of metal electrodes ............. 6
Maintenance of conductivity electrodes ..... 6
Maintenance of oxygen electrodes............ 6
Ion measurement ................................ 7
GLP................................................. 7
Calibration reminder ............................ 7
Data-logging ...................................... 8
USB ................................................. 8
Alternating measurements ..................... 8
Inhoudstafel
Inleiding ........................................... 9
Fabrikant .......................................... 9
Waarborg .......................................... 9
Onderhoud ........................................ 9
Netadapter........................................ 9
Toetsenbord....................................... 9
Systeem ........................................... 10
Ingangen........................................... 10
Schrijveruitgang.................................. 10
Digitale uitgang .................................. 10
Computer interface ............................. 10
Datum en Tijd .................................... 10
Schrijver........................................... 10
Wachtwoord ...................................... 10
Belangrijk ......................................... 11
pH-meting......................................... 11
mV-meting ........................................ 11
rH2-meting........................................ 11
Temperatuurmeting ............................. 11
Geleidbaarheidsmeting ......................... 12
Resistiviteitsmeting.............................. 12
Saliniteitsmeting ................................. 12
TDS-meting ....................................... 12
µW-meting ........................................ 12
Opgeloste-zuurstof-meting ..................... 13
%O2-meting ....................................... 13
Luchtdrukmeting................................. 13
Principe............................................ 13
Interferenties..................................... 13
Onderhoud van pH elektroden................. 14
Onderhoud van metaalelektroden ............ 14
Onderhoud van geleidbaarheidscellen ....... 14
Onderhoud van zuurstofelektroden ........... 14
Ion-meting ........................................ 15
GLP................................................. 15
IJkwaarschuwing ................................. 15
Data-opslag ....................................... 16
USB ................................................. 16
Alternerende meting ............................ 16
pH/mV/Ion input-3...6
(C864 only)
pH/mV/Ion
input-1
pH/mV/Ion
input-2
temperature
input
conductivity
input
recorder
ouput
USB
interface
DC adaptor
input
C862/C863
O2 input

Inhaltsverzeichnis
Hersteller ......................................... 25
Service............................................. 25
Netzadapter ...................................... 25
Bedienungsfeld ................................... 25
Einführung ........................................ 25
Garantie ........................................... 25
Computer Interface ............................. 26
System ............................................. 26
Datum und Zeit .................................. 26
Schreiber .......................................... 26
Eingänge........................................... 26
Schreiberausgang ................................ 26
Digitalausgang .................................... 26
Kennwort .......................................... 26
Wichtig ............................................ 27
pH-Messung ....................................... 27
mV-Messung....................................... 27
rH2-Messung ...................................... 27
Temperaturmessung ............................. 27
Leitfähigkeitsmessung........................... 28
Resistivität-Messung ............................. 28
Salinität-Messung ................................ 28
TDS-Messung ...................................... 28
µW-Messung ....................................... 28
Gelöster-Sauerstoff-Messung................... 29
%O2-Messung...................................... 29
Luftdruckmessung ............................... 29
Prinzip ............................................. 29
Störungen ......................................... 29
Wartung der pH-Elektroden .................... 30
Wartung der Metallektroden ................... 30
Wartung der Leitfähigkeitsmeßzellen ........ 30
Wartung der Sauerstoffelektroden ............ 30
Ionenmessung..................................... 31
GLP................................................. 31
Kalibrierwarnung................................. 31
Datenverarbeitung............................... 32
USB ................................................. 32
Alternierende Messungen....................... 32
Table de matières
Préface ............................................ 17
Fabricant .......................................... 17
Garantie ........................................... 17
Service............................................. 17
Adaptateur secteur.............................. 17
Le clavier ......................................... 17
Branchement ..................................... 18
Sortie enregistreur .............................. 18
Sortie numérique ................................ 18
Interface ordinateur............................. 18
Système ........................................... 18
Date et Heure .................................... 18
Enregistreur....................................... 18
Mot de passe...................................... 18
Important ......................................... 19
Mesure de pH..................................... 19
Mesure de mV .................................... 19
Mesure de rH2 .................................... 19
Mesure de température......................... 19
Mesure de conductivité ......................... 20
Mesure de résistivité ............................ 20
Mesure de salinité ............................... 20
Mesure de TDS.................................... 20
Mesure de µW .................................... 20
Mesure d'oxygène dissous....................... 21
Mesure de %O2 ................................... 21
Mesure de pression d'air ........................ 21
Principe............................................ 21
Interférences ..................................... 21
Entretien des électrodes de pH ............... 22
Entretien des électrodes métaliques ......... 22
Entretien des électrodes de conductivité ... 22
Entretien des électrodes d'oxygène........... 22
Mesure d'ions ..................................... 23
BPL ................................................. 23
Avertissement d’étalonnage ................... 23
Collecteur......................................... 24
USB ................................................. 24
Mesures alternées................................ 24

1 C861 • C862 • C863 • C864 • C868
C861 • C862 • C863 • C864 • C868 2
Keyboard
MODE = Selects all modes or escapes from error traps, calibration procedures,
etc..by returning to the original mode.
çèéê = Button for entering a value or for selecting a function.
CAL = Starts or proceeds a calibration or a function.
STORE = Stores the displayed value or send it to a computer.
HOLD = Holds display when measuring.
ON/OFF = Switches the instrument on or off.
AC adaptor
Connect the AC adapter (9 V, 300 mA for 230 V~ or 120 V~) to the DC socket. Do
not hold the adapter by wet hand.
Introduction
This instrument is manufactured with the latest technology and needs no particu-
lar maintenance. Consort certifies that this instrument was thoroughly inspected
and tested at the factory prior to shipment and found to meet all requirements
defined by contract under which it is furnished. However, dimensions and other
physical characteristics may differ.
The normal operating temperature should be between 0° and 40°C. Never use
the instrument in a room with high humidity (>95 %) or at very low temperatures
(condensation water!).
Manufacturer
Consort nv
Parklaan 36 Tel [phone]
B2300 Turnhout Fax [phone]
Belgium E-mail: [email protected]
Warranty
This instrument (excluding all accessories) is warranted against defective material
and workmanship for a period of thirty-six (36) months from the date of shipment
ex factory. Consort will repair all defective equipment returned to it during the
warranty period without charge, provided the equipment has been used under
normal laboratory conditions and in accordance with the operating limitations and
maintenance procedures in this instruction manual and when not having been
subject to accident, alteration, misuse or abuse. A return authorisation must be
obtained from Consort before returning any product for warranty repair on a
freight prepaid basis!
Consort is not liable for consequential damages arising out of the use or handling
of its products.
Servicing
In the event of this instrument being returned for servicing, the owner is requested
to remove the power supply lead and NOT to send the following items unless they
are suspect:
Manual
Cables
Accessories
If serious malfunctioning occurs, stop using the unit immediately and consult your
local Consort dealer.

1 C861 • C862 • C863 • C864 • C868
C861 • C862 • C863 • C864 • C868 2
Inputs
The pH/mV/Ion electrodes should be connected to the coaxial pH/mV connectors
CH.1, etc. If separate electrodes are used, connect the reference electrodes to the
REF. terminals. Connect the conductivity cell to the coaxial EC input. Automatic
temperature compensation and temperature measurements are possible by plug-
ging a Pt1000 thermocompensator into the °C terminals. Without compensator, the
manual temperature compensation is automatically switched on. C862 & C863: the
O2-electrode should only be connected to the coaxial connector CH.2. Its banana
plugs should be inserted in the °C terminals.
Password
1. Select [MENU] by pressing MODE.
2. Select [PASSWORD] and press CAL.
3. A private code can be programmed to avoid undesired access to the instru-
ment. Choose [YES] and press CAL to enter your secret sequence of 5 keys.
Recorder output
A recorder can be connected to the red (+) and black (-) terminals. Use only labora-
tory recorders with a high input impedance!
Computer interface
A USB port is provided for interfacing the instrument with a computer. Download
the necessary driver from www.consort.be (>downloads >software).
System
1. Select [MENU] by pressing MODE.
2. Select [SYSTEM] and press CAL.
3. Follow the instructions on the screen to adjust language and contrast.
Date and Time
1. Select [MENU] by pressing MODE.
2. Select [DATE/TIME] and press CAL.
3. Adjust the date and press CAL to adjust the date.
4. Adjust the time and press CAL to adjust the time.
Recorder
1. Select [MENU] by pressing MODE.
2. Select [RECORDER] and press CAL.
3. Select the desired channel and press CAL.
4. Select the desired range and press CAL (only for conductivity).
5. Select the desired minimum level corresponding to a 0 V recorder output and
press CAL.
6. Select the desired maximum level corresponding to a 2 V recorder output and
press CAL.
Digital output
A standard RS232 output terminal (DP9) is provided for interfacing the instru-
ment with a printer or computer. Data is sent in the ASCII code at a BAUD rate of
300...19200 bps (8 bit, no parity, 1 stopbit).
Serial port pinout specifications:
pin 1 : connected to pin 4 and pin 6
pin 2 : TxD, transmit data
pin 3 : RxD, receive data
pin 4 : connected to pin 1 and pin 6
pin 5 : Gnd, signal ground
pin 6 : connected to pin 1 and pin 4
pin 7 : connected to pin 8
pin 8 : connected to pin 7
pin 9 : not connected

3 C861 • C862 • C863 • C864 • C868
C861 • C862 • C863 • C864 • C868 4
pH measurement
1. Select the desired input, e.g. [CH.1], by pressing MODE. The display will imme-
diately show the measured value according to the previous calibration. Should
you want to recalibrate, press CAL.
2. The display shows five of the 9 buffers in memory (1.68, 4.00, 4.01, 6.87, 7.00,
9.18, 9.21, 10.01, 12.45). Select the proper values or enter manually special
values and press CAL. The unused buffers should be switched off.
3. Rinse the electrodes with distilled water and immerse them in the first buffer
solution. Select [CALIBRATE], press CAL and follow the instructions on the
screen until the calibration is finished.
4. After rinsing the electrodes with distilled water, immerse them in the samples
and read the display.
5. Rinse the electrodes always with distilled water after use and store them in a
3...4 M KCl solution.
Using pH electrodes with an abnormal zero point:
1. Select [E0 = x mV] and press CAL.
2. Enter the zero point of the electrode and press CAL.
• Press ê to change the resolution from 0.1 to 0.001 pH.
Temperature measurement
1. Select [°C] by pressing MODE. Without Pt1000, adjust the manual temperature
compensation and proceed by pressing MODE. Should you want to recalibrate,
press CAL.
2. Immerse the Pt1000 in a standard solution of known temperature. Calibrate to
the proper value and press CAL. Press Hold to reset the calibration.
mV measurement
1. Select the desired input, e.g. [CH.2], by pressing MODE. The display will imme-
diately show the measured value according to the previous calibration. Should
you want to recalibrate, press CAL.
2. Immerse the electrodes in a standard solution of known potential, adjust to
the proper value and press CAL. Press Hold to reset the calibration.
• Press ê to change the resolution from 1 to 0.1 mV.
rH2 measurement
1. Select [rH2] by pressing MODE.
2. After calibrating and rinsing the pH and redox electrodes with distilled water,
immerse them in the solution to be measured and read the display.
Important
• A blinking decimal point warns you for unstable measurements. Wait to read
the display!
• Stirring the solution during the measurements promotes the homogeneity and
is obligatory!
• The instrument will refuse automatic calibration when the electrode is unsta-
ble. Insufficient stirring or a worn electrode may be the cause.
(C868)

3 C861 • C862 • C863 • C864 • C868
C861 • C862 • C863 • C864 • C868 4
Conductivity measurement
Measurement:
1. Select [S/cm] by pressing MODE. The display will immediately show the meas-
ured value according to the previous calibration. Should you want to recali-
brate, press CAL.
2. The display shows the three standards in memory (1413 µS/cm, 12.88 mS/cm,
111.8 mS/cm). Select the proper values or enter manually special values and
press CAL. The unused standards should be switched off.
3. Select the temperature to which all future measurements will be referred to
(REF=25°C) and press CAL.
4. Select whether or not automatic temperature compensation (ATC) should be
applied and press CAL.
5. After rinsing the electrode several times with the first standard solution,
immerse it in that standard. The solution temperature is not so critical but
should lie between 0°C and 30°C. When no Pt1000 is used, do not forget
to compensate manually first! Select [CALIBRATE], press CAL and follow the
instructions on the screen until the calibration is finished.
6. Rinse the electrode several times with the sample, immerse it in that solution
and read the display.
7. Rinse the electrode always after use and store it in distilled water (add some
detergent to keep the spongy platinum surface in perfect condition).
• When starting a titration, press ê to lock the actual range and avoid cross-
over errors due to differences in the measuring frequency. Press MODE to
return to the normal measuring mode.
Capacitive compensation:
1. Capacitive compensation increases accuracy in the very low conductiv-
ity ranges (<10 µS/cm). Select whether or not this compensation should be
applied. Verify if the attached electrode is completely dry and press CAL.
Select [COMP.ON] or [COMP.OFF] and press CAL. Follow the instructions on the
screen.
TDS measurement
1. Select [TDS] by pressing MODE. The display will immediately show the meas-
ured value according to the previous calibration. Should you want to recali-
brate, press CAL. Proceed as for conductivity.
Resistivity measurement
1. Select [Ω.cm] by pressing MODE. The display will immediately show the meas-
ured value according to the previous calibration. Should you want to recali-
brate, press CAL. Proceed as for conductivity.
Salinity measurement
1. Select [SAL] by pressing MODE. The display will immediately show the meas-
ured value according to the previous calibration. Should you want to recali-
brate, press CAL. Proceed as for conductivity.
µW measurement
1. Select [µW] by pressing MODE.
2. After calibrating and rinsing the pH, ORP and conductivity electrodes with dis-
tilled water, immerse them in the solution to be measured and read the power
in µW.
(C868)

5 C861 • C862 • C863 • C864 • C868
C861 • C862 • C863 • C864 • C868 6
Dissolved oxygen measurement
1. Select [O2] by pressing MODE. The display will immediately show the measured
value according to the previous calibration. Should you want to recalibrate,
press CAL.
2. The display shows the salinity correction. Select the proper value and press
CAL. Leave salinity correction to zero unless you are going to measure in heav-
ily salted solutions such as e.g. sea-water (35 g/l). Select [CALIBRATE], press
CAL and follow the instructions on the screen until the calibration is finished.
3. The electrode exposed to the air reaches an equilibrium corresponding to the
partial pressure of oxygen and thus to saturation in water at the given temper-
ature. The instrument shows the measured saturation, current, temperature,
and will calibrate automatically when readings are stable.
4. After rinsing the electrodes with distilled water, immerse them in the samples
and read the display. Stirring the solution during the measurements promotes
the homogeneity and is obligatory! The advection rate must be at least 10
cm/s.
5. Rinse the electrode always after use and store it in distilled water.
• A blinking decimal point warns you for unstable measurements. Wait to read
the display!
• Stirring the solution during the measurements promotes the homogeneity and
is therefore always recommended.
• Press ê to change the resolution from 0.1 to 0.01 mg/l or from 1 to 0.1 %.
Interferences
All substances which can diffuse through the membrane and for which 800 mV poten-
tial suffices for polarographic reduction, will be reduced in the electrode. This will
give a corresponding current contribution, if they are present. Interference can
be caused by ions entering the electrode through porous or mechanically damaged
membranes and by diffusion of other reactive gases apart from oxygen, e.g. CO2,
Cl2, SO2, and H2S. These substances react in undesired manner with the electrode.
Acidic or basic gases change the pH value of the electrolyte solution and thus dis-
turb the reading, particularly when measuring small oxygen concentrations. High
salt concentrations in the sample solution can falsify readings too.
%O2 measurement
1. Select [%O2] by pressing MODE. The display will immediately show the meas-
ured value according to the previous calibration. Should you want to recali-
brate, press CAL. Proceed as for mg/l.
Air pressure measurement
1. Select [hPa] by pressing MODE. Should you want to recalibrate, press CAL.
2. Adjust to the real air pressure and press CAL. Press Hold calibration.
Principle
The oxygenmeter and its electrode function according to the Clark principle with
silver as cathode and lead as anode in an electrolyte cell. Oxygen gas present
in the electrolyte is reduced to OH ions at the cathode. The resulting current is
diffusion limited and therefore proportional to the oxygen concentration in the
sample solution. This current is amplified, corrected, and displayed in mg/l, ppm
or % dissolved oxygen.
(C862, C863)
(C862, C863)
(C862, C863)
(C862, C863)
(C862, C863)

5 C861 • C862 • C863 • C864 • C868
C861 • C862 • C863 • C864 • C868 6
Maintenance of pH electrodes
A pH electrode is active and stable only after wetting! For this purpose it must
be immersed for at least ten hours in a 3...4 M KCl solution. During short inter-
ruptions (e.g. storage) the electrode should be immersed in a 3...4 M KCl solution.
In doing this it is always kept ready for use. When the interruption is longer than
a month, refill the closing cap with 3...4 M KCl and plug it on the electrode tip in
order to protect the glass bulb. Before use, ensure that the reference part of the
electrode is topped up with a 3...4 M KCl solution.
Avoid a low pressure inside the electrode! Therefore always remove the closure
from the refilling aperture during the measurements as well as during the calibra-
tion. This allows the saltbridge solution to flow through the ceramic liquid junction
and prevents contamination of the electrolyte. For the same reason, the inside
level should always be higher than the outside level of the measuring solution.
Close the refilling aperture again when storing the electrode.
A polluted electrode may be cleaned with a soft detergent or 0.1 M HCl. Greasy
substances may be removed with acetone or alcohol (never do this with plastic
electrodes!).
If the electrode is polluted by proteinaceous materials (such as blood), it should
stand in a cleaning solution overnight and then be cleaned with distilled water
before use. The pH electrode wears away by being used. If the electrode tends to
respond slower and calibration becomes difficult, even after cleaning, it should be
replaced by a new one.
Maintenance of oxygen electrodes
A dissolved oxygen electrode is active and stable only when polarised! The
electrode body has almost unlimited life and requires no maintenance. After pro-
longed use of the electrode, it may become deactivated. An indication is that the
electrode no longer responds correctly to calibration. In this case:
1. Carefully screw off the measuring head.
2. Cautiously remove the precipitated deposits with the aid of filter paper. Do
not use grinding paper or a glass fibre!
3. Rinse several times with distilled water and shake carefully off the water
drops.
4. Take the measuring head, fill it with new electrolyte solution and very slowly
screw it onto the electrode while holding it vertically.
5. Let the electrode rest for a few hours! The electrode is now ready for use
again.
• Replace the membrane only when damaged, not when calibration is no longer
possible!
Maintenance of metal electrodes
Metal electrodes (Pt, Ag, Au): Metal electrodes are always ready for use. During
short interruptions they are immersed in distilled water. They should be cleaned
regularly:
• Silver electrodes are immersed in a concentrated ammonia solution during one
hour.
• Platinum or gold electrodes are immersed in concentrated nitric acid during
one hour.
Maintenance of conductivity electrodes
A conductivity cell is active and stable only after wetting! For this purpose it
must be immersed for at least one hour in distilled water. Rinse the cell always
after use and store it in distilled water (add some detergent to keep the spongy
platinum surface in perfect condition).
A polluted cell may be cleaned with a soft detergent or diluted nitric acid. Greasy
substances may be removed with acetone or alcohol (never do this with plastic
electrodes!).

7 C861 • C862 • C863 • C864 • C868
C861 • C862 • C863 • C864 • C868 8
Ion measurement
1. Select the desired input, e.g. [CH.1], by pressing MODE. The display will imme-
diately show the measured value according to the previous calibration. Should
you want to recalibrate, press CAL.
2. Select two proper standards from the values in memory, covering your future
measuring range, and press CAL.
3. Select [CALIBRATE] and press CAL.
4. After rinsing the electrodes with distilled water, immerse them in the first
standard solution. Select the first calibration value and press CAL when read-
ings are stable. Go on in the same way with the second standard solution.
5. Decide whether a blank correction should be carried out or not. Follow the
instructions on the screen. After rinsing the electrodes with distilled water,
immerse them in a blank solution. When readings are stable press CAL.
6. Rinse the electrodes with distilled water, immerse them in the samples, and
read the concentration on the display.
• Maintenance: we refer to the manual supplied with the ion specific elec-
trodes.
GLP
1. Select the desired range by pressing MODE and then press CAL.
2. Select [GLP] and press CAL.
3. Select [SHOW REPORT] and press CAL. Browse with çèéê to show a com-
plete calibration report. Press STORE to send the report to a computer.
pH/mV/Conductivity/°C-meter C861
--------------------------------
Date : 15/05/2003
Time : 11:32:04
Version : 1.0
Input : CH.1
SETTINGS
--------
Identification No : 003
Password : OFF
pH/°C correction : OFF
Temp. probe : ---
Manual temp. (°C) : 22.6
pH CALIBRATION
--------------
Date : 15/05/2003
Time : 11:20:06
Eo (mV) : 0
Buffer 4.008/6.865
Slope (%) : 98.4
Zero point (pH) : 6.871
Buffer 6.865/9.180
Slope (%) : 98.2
Zero point (pH) : 6.879
AVERAGE VALUES
--------------
Slope (%) : 98.3
Zero point (pH) : 6.875
Response time (s) : 11
Temperature (°C) : 22.6
STATISTICS
----------
Slope (%) : +0.4
Zero point (pH) : +0.002
Response time (s) : -1
Calibration reminder
1. Select the desired range by pressing MODE and then press CAL.
2. Select [INTERVAL] and press CAL.
3. Select the desired time interval between each automatic warning for a new
calibration of the electrodes and press CAL.
(C863, C864)