Pr
o
Minent
®
Page 48
8.3.2
DULCOTEST
®
PER Sensor for Hydrogen Peroxide, Commissioning
8.3.2.1
DULCOTEST
®
PER Sensor for Hydrogen Peroxide, Assembly
Assembly
CAUTION
• Protective goggles and protective clothing should be worn when handling water and
solutions containing H
2
O
2
!
• Do not swallow the electrolyte. If electrolyte comes into contact with the eyes or skin,
rinse the affected areas thoroughly with water! If reddening of the eyes occurs, con sult
an eye specialist!
IMPORTANT
• Do not touch or damage the membrane and electrodes!
• Always keep electrolyte bottles tightly closed after use! Do not transfer electrolyte into
any other bottles or containers.
• The electrolyte should not be kept for more than 1 year! (See label for use-by date).
• The membrane cap may only be used once!
Pouring electrolyte
Remove the membrane protection cap and unscrew the membrane cap from the electrode
shaft.
Fill the membrane cap with electrolyte up to the lower thread, if possible bubble-free.
If you wish to considerably reduce the running-in time, you must expel the air between the gauze
and the membrane (as the air is expelled, the membrane is visible by refl ecting through the
electrolyte as it is being fi lled).
There are two ways of doing this:
1.
Tap the membrane cap lightly from the side, from the bottom and from the top with the sensor
shaft until the air bubbles stop rising (you can see this in good light).
2.
Fill the enclosed pipette with electrolyte from the membrane cap, if possible up to the top.
Please ensure that no air is taken in.
Take the opening of the pipette as close as possible to the membrane (through the electrolyte)
and place a couple of drops on it from the pipette (do not release any air from the pipette
when doing this!)
IMPORTANT
After using the pipette, rinse thoroughly with water and store in the original sensor pack-
ag ing!
Assembling membrane cap
Insert the fi nger nail below both rubber seals at the semi-circular pocket in the membrane cap
(the vent is positioned there) and pull the rubber seals to the bottom until the needle top-sized
vent becomes visible and hold the seals. When screwing together, excess electrolyte should
escape freely through the vent such that the membrane is not damaged by excess pressure.
Position the electrode shaft vertically on the fi lled membrane cap.
Do not obstruct the vent with your fi ngers.
Screw the electrode shaft manually into the membrane cap up to the stop such that there is
no free gap between the membrane cap and the electrode shaft.
Re-insert the rubber seals fl ush into the groove of the membrane cap.
H
2
O
2
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24.02.2009 11:56:05 Uhr
