Polarographic Sensor Do; Sensing Element; Membrane; Electrolyte - XS Instruments Revio Manual De Instrucciones

Restore Factory Default
If the instrument does not work properly or incorrect calibrations have been carried out, confirm Yes with
button , in order to take all the parameters of the DO back to the default settings.
IMPORTANT: The factory reset of the parameters does not erase the stored data.

• Polarographic sensor DO 7

The probe DO7 is polarographic with integrated temperature sensor. The oxygen sensor uses a BNC
connector, while the temperature sensor uses an RCA connector.

Membrane

• Sensing element

The permeable membrane allows the passage of only gas present in the sample to be analysed, blocking
the passage of liquids. The oxygen reacts with the electrolytic solution, after passing through the membrane,
and changes its chemical and physical properties depending on oxygen concentration. The sensing elements
detect this change and generate a signal depending on the amount of dissolved oxygen. The oximeter reads
this signal and returns the value on the display.
• Membrane
The membrane, which must allow only passage of oxygen, must be in perfect conditions.
If it presents any ripples, irregularities or is punctured, it must be replaced with a new one.

• Electrolyte

The electrolyte is an alkaline solution that reacts to the presence of oxygen, it saturates with wear and over
time, therefore, it must be replaced regularly.

• Polarization time

The polarographic sensor needs to be polarized before performing the measurements.
Connect the probe to the instrument and switch on with button
•
• The device automatically starts the sensor polarization.
• The display will show the countdown in seconds. The string "
that the operation is in progress.
• At the end of the polarization, the meter is ready to perform measurements and calibrations.
The polarization time lasts 10 minutes. However, if the instrument is turned off for less than an hour, the
polarization time will reduce proportionally.

• New sensor with new instrument

The sensor is supplied with the membrane filled with electrolyte; it is necessary to hydrate the membrane
dipping it in distilled water for half an hour. Switch the device on and wait for the polarization time.

• Probe storage

When the probe is not in use, store it in the storage cap containing distilled water. In this way, the membrane
is protected and hydrated, ready for use.
UM ReVio EN rev.0 04.06.2020
Integrated temperature sensor
Probe polarization in progress
36
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" indicates
EN