UbiBot GS2 Benutzerhandbuch Seite 13

6. How often does the PH electrode
PH value electrode: In the case of high accuracy requirements, it is recommended to conduct calibration each time
beforeuse;if there is no strict accuracyrequirement, it can be calibrated accordingto the actual situation.
Conductance electrode: Normally, it is recommended to calibrate once a month. f there is no strict accuracy
requirement, it can be calibrated according to the actual situation.
7. When measuring pure water or liquids with very low ion concentration, the measurement data will be
unstable.
This is because the ion concentration in the liquid to be measured is very low, and the high concentration of KCIin
the salt bridge solution of the referenceelectrode has a large concentration difference with each other,which is
very dfferent from its situation in ordinary solution. Pure water will increase the permeation rate of the salt bridge
solution, prompting the oss of the salt bridge, thus accelerating the reduction of the concentration of K+ and CI
f the concentration of Cl-changes,the potential of the referenceelectrode itself will also changeand the drift of
the measured value wi I occur. Special electrodes are required for measuring pure water or liquids with very low
sub-concentration.
PRODUCT CARE
Please a ways follow the instructions contained in this manual.
The device is not waterproof. Pleasekeep away from water during operation, storageand shipping.
Always mount the device on a stable surface.
Keepaway from acidic, oxicfzing, flammable or explosive substances.
When handling the device,avoid using excessiveforce and never usesharp instruments to try and open it.
The optimal working environment of the device:temperature -20-600C,hum'dty 10-90%RH (Nocondensation); PH
electrode operating temperature range of 5 600C
Suggestionsfor disposal: The disposal of the device and its packaging should be handled according to the relevant
urban environmental protection regulations.
or the conductance electrode
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need to be calibrated?
ENGLISH