YSI pHT - G User Manual [en, fr, es]
OPERATING MANUAL
ScienceLine --- pHT - Pt
ScienceLine --- pHT - G
ScienceLine --- pHT - Mikro
MODE
INSTRUCCIONES DE
T
814244 04/2014
D’EMPLOI
OPERACIÓN
Science
Line
Science Line
Operating
Technical data .................................................................................................................. 5
Commissioning, measuring, calibration ........................................................................... 6
Storage ............................................................................................................................ 7
Aging ................................................................................................................................ 8
Maintenance and cleaning ............................................................................................... 8
Wear parts and accessories ............................................................................................. 9
Mode d'emploi ..................................................................................................................... 11
Caractéristiques techniques ........................................................................................... 13
Mise en service, mesure, calibration .............................................................................. 14
Stockage ........................................................................................................................ 15
Vieillissement ................................................................................................................. 16
Maintenance et nettoyage .............................................................................................. 16
Pièces d'usure et accessoires ........................................................................................ 17
Instrucciones de
Especificaciones técnicas .............................................................................................. 21
Puesta en funcionamiento, medición, calibración .......................................................... 22
Almacenamiento ............................................................................................................ 23
Envejecimiento ............................................................................................................... 24
Mantenimiento y limpieza ............................................................................................... 24
Piezas de desgaste y accesorios ................................................................................... 25
Contact Information......................................................................................... 27
Manual ......................................................................................................................
operación ....................................................................................................
3
19
ScienceLine --- pHT - Pt
ScienceLine --- pHT - G
ScienceLine --- pHT - Mikro
OPERATING MANUAL
T
814244
04/2014
Science
pH
COMBINATION
ELECTRODES WITH
Line
SILAMID® DOUBLE JUNCTION
ScienceLine
Contact YSI
1725 Brannum Lane
Yellow Springs, OH 45387 USA
Tel: +1 937-767-7241
For the most recent version of the manual, please visit www.ysi.com.
800-765-4974
Email: environmental@ysi.com
Internet: www.ysi.com
Copyright © 2014 Xylem Inc.
ScienceLine
Technical
data
T 814244
04/2014
5
YSI model
Reference electro-
Junction
NTC
Special features
Platinum
Yes
Silamid double junction
Science pHT-G
KCl 3 mol/L, Ag+ free
Ground
Yes
Silamid double junction
Micro
Platinum
Yes
YSI model
pH measur-
Allowed
ture range
Membrane
25 °C
Typical
Science pHT-Pt
0 ... 14
-5 ... 100 °C
< 300 MOhm
Laboratory
Science pHT-G
0 ... 14
-5 ... 100 °C
< 300 MOhm
Laboratory
Micro
0 ... 14
-5 ... 100 °C
< 500 MOhm
Laboratory
YSI model
Shaft
Electrical connection
Length
Ø [mm]
Material
Combination
connection
Meter
Cable
pHT-Pt
170
12
Glass
Cable
BNC + 4mm
1 m
pHT-G
170
12
Glass
BNC + 4mm
1 m
Science
pHT-Micro
200
12/5
Glass
Cable
BNC + 4mm
1 m
Science pHT-Pt
Science pHT-
Technical
General data
lyte
KCl 3 mol/L, Ag+ free
KCl 3 mol/L, Ag+ free
Measurement and application characteristics
ing range
data
joint
diaphragm
tempera-
Silamid double junction
resistance at
application
Science pHT-
Science
Science
Shaft dimensions, shaft material, electrical connection
[mm]
(70/130)
electrode
Cable
connection
length
6
T 814244
04/2014
Commissioning, measuring,
calibration
Commissioning, measuring,
calibration
Commissioning The electrodes are filled with reference electrolyte solution in the factory.
Prepare the combination electrode for measuring as follows:
•
The closure of the refilling opening consists of a slide. Open the refilling
opening for the reference electrolyte solution.
The refilling opening must always be open during calibration and
measurement!
1
2
Refilling
opening
•
Remove the watering cap from the electrode tip. Possible salt deposits in the
area of the watering cap do not affect the measuring characteristics and can
easily be removed with deionized water.
Note
Please keep the watering cap. It is required for the combination electrode to
be stored. Always keep the watering cap clean.
•
Connect the combination electrode to the meter
•
Calibrate the combination electrode according to the operating manual of the
meter. When doing so, observe the general rules on the following page.
Note (only Scinece pHT-G)
When the Science pHT-G combination electrode is delivered, the ground
sleeve is fixed with a shrinkable tubing. For commissioning, carefully remove
the shrinkable tubing with a sharp knife or scalpel.
To moisten the ground surfaces hold the combination electrode in a vertical
position with the refill opening open and carefully loosen the ground junction
by turning it slightly until reference electrolyte solution comes out of the
junction. Then put the ground sleeve on again while turning it slightly.
•
Make sure the refilling opening for the reference electrolyte solution is open.
•
Avoid the displacement of any solution (sample or buffer solution) from one
measurement to the next by taking the following measures:
- Shortly rinse the calibration and sample beakers with the solution the
beakers are to be filled with next.
- Between measurements, rinse the combination electrode with the solution
that follows. Alternatively, you can also rinse the combination electrode with
deionized water and then carefully dab it dry.
ScienceLine
T 814244
04/2014
7
IoLine
ScienceLine
Overnight
longer
or
•
Immerse the combination electrode in the solution in a vertical or slightly
tilted position.
•
Make sure the immersion depth is correct. The junction must be
completely submersed in the solution. At the same time, the level of the
reference electrolyte must be at least 2 cm above the level of the solution.
•
Provide approximately the same stirring conditions for measuring as for
calibrating.
The frequency of subsequent calibrations depends on the application.
Many meters provide an option where you can enter a calibration interval.
After the calibration interval has expired, the meter will automatically
remind you of the due calibration.
Storage
With the refilling opening open, immerse the combination electrode in
in reference electrolyte (KCl 3 mol/L, Ag+ free). Observe the minimum depth
of immersion. Prior to the next measurement, shortly rinse the combination
electrode with the test sample or deionized water.
Note
Prevent contact of the pH membrane to the beaker bottom to avoid scratches
on the pH membrane.
Put the clean combination electrode in the watering cap that is filled with
reference electrolyte (KCl 3 mol/L, Ag
Note
pH combination electrodes must not be stored dry or in deionized water. The
combination electrode could be permanently damaged by this. If the liquid in
the irrigation cap has dried up, condition the combination electrode in
reference electrolyte (KCl 3 mol/L, Ag+
Note
During longer storing periods, salt sediments may develop on the watering
cap. They do not affect the measuring characteristics and can easily be removed with deionized water when the combination electrode is put into operation again.
+
free) and close the refilling opening.
+
free) for at least 24 hours.
Storage
8
T 814244
04/2014
Aging,
Maintenance
Refilling
the
reference
electrolyte
and cleaning
ScienceLine
Aging
Every pH
With aging, the responding behavior becomes slower and the electrode slope
and asymmetry change. Moreover, extreme operating conditions can
considerably shorten the lifetime of the combination electrode. These are:
•
Strong acids or lyes, hydrofluoric acid, organic solvents, oils, fats, bro- mides,
sulfides, iodides, proteins
•
High temperatures
•
High changes in pH and temperatures
•
The warranty does not cover failure caused by measuring conditions and
mechanical damage.
Maintenance
During operation, a small amount of reference electrolyte leaks through the
junction from the
If the level of reference electrolyte becomes too low with time, refill it through
the refilling opening. Refilling is very easy with the enclosed dropping bottle.
Proceed as follows:
•
Cut off the tip of the dropping bottle at a right angle until the opening in the tip
can be seen
•
Open the refilling opening of the combination electrode
•
Press the tip of the dropping bottle into the refilling opening while turning it
slightly
•
Pump the reference electrolyte in the shaft using the dropping bottle
•
Pull the dropping bottle out of the refilling opening while turning it slightly if
necessary
combination
and cleaning
combination
electrode
electrode into the test sample.
undergoes
a natural aging process.
T 814244
04/2014
9
Contamination
Cleaning procedure
F
L
P
Description
Model
Order no.
Reference electrolyte solution 250 ml
(
KCl-250
109 705Y
ScienceLine
Wear parts and accessories
Cleaning Remove water-soluble contamination by rinsing with deionized water. Re-
move other contamination as follows:
at and oil Rinse with water containing household
washing-up liquid
ime and hydroxide deposits Rinse with citric acid (10 % by weight)
roteins Immerse in pepsin cleaning solution PEP/pH
for approx. 1 hour.
Note: Make sure the level of the reference
electrolyte is above that of the cleaning
solution.
Note
Hydrofluoric acid, hot phosphoric acid and strong alkaline solutions destroy
the glass membrane.
After cleaning Rinse the combination electrode with deionized water and condition it in
reference electrolyte solution (KCl 3 mol/l, Ag
+
free) for at least 1 hour. Then
recalibrate the combination electrode.
Wear parts and accessories
KCl 3 mol/l, Ag+ free)
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