Profi-Line
pH electrode for aquaria
For continuous measurement of the pH value in fresh water and sea water aquaria
- Instructions for use: please read carefully and keep in a safe place. -
GB
Congratulations on buying this high-quality pH electrode from DENNERLE. If used properly and treated with due care, this system will provide reliable and accu-
rate readings of the pH value in your aquarium – an essential basis for optimum fish and plant care.
DENNERLE wishes you lasting enjoyment from your aquarium!
Safety instructions
• All cables leading out of the aquarium must be provided with a drip loop to prevent
any water which may run down the cables from reaching items of equipment or the
mains socket outlet.
• Always disconnect all devices located in the water from the power supply before pla-
cing your hands in the aquarium water.
1 Which equipment can the
pH electrode be used with?
The DENNERLE pH electrode for aquaria works perfectly in combination
with with all DENNERLE pH controllers.Equally, it can also be used with
all other standard pH measuring and control devices with BNC connec-
tor. Please observe the instructions for use of the device concerned!
2 What‘s what
BNC connector
Connecting cable, 3 m
Electrode cap
Plastic stem
Electrode tip with membrane
Quali-Safe electrode protector
(contains KCl solution,
3 molar)
3 Connecting
the pH electrode
• Unscrew the lid of the Quali-Safe
electrode protector and carefully
remove the electrode. Note: Any
white salt crust which may appear on
the electrode shaft consists of calci-
um chloride (KCL) and will not affect
measuring performance.
• Rinse electrode tip briefly under run-
ning tap water, in order to remove
residual KCl solution/ the salt crust.
• Connect BNC connector to pH control-
ler or pH measuring device.
4 Calibrating the pH electrode
4.1 Purpose of calibration and calibration interval
Any measuring instrument can only be as accurate as the connected sen-
sor. The pH electrode is thus a vitally important part of your pH measu-
ring device.
As every pH electrode may drift somewhat in the course of time, it is
crucial to calibrate the pH electrode
-
when putting it into operation for the 1st time
-
after the 1st week
-
and then every 4 to 6 weeks (under normal operating conditions).
4.2 Preparations for the calibrati-
on process
Ideal temperature of the buffer solutions:
20-25 °C.
Pour pH 7 and pH 4 buffer solution into two
separate, clean receptacles up to a level of
approx.
2 cm. Pour a little distilled water
into a third receptacle.
TIP: The DENNERLE calibrating station is particularly convenient and saves
valuable buffer solution.
Please note: The accuracy of the calibration depends above all on the qua-
lity of the employed buffer solutions. We thus recommend original DEN-
NERLE buffer solutions. Do not carry out calibration in the supply bottles -
water on the pH electrode may alter the buffer solutions! Dispose of used
buffer solution down the drain.
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