S I G N A T U R E
3
. Press the
“CAL” [18]
key until the equipment beeps. Without releasing the key, press
“SET”
[24]
for a few seconds until the pH screen displays a blinking
“7.0”
. The calibration light
“7.0”
[17]
will remain on.
3. Gently shake the sensor to remove any possible drops of water and insert in the standard
pH=7.0 solution (green). Gently shake for a few seconds and press
“CAL” [18]
. Once stabilised,
the screen
[15]
will display a blinking
“4.0”
. The calibration light
“4.0”
will remain on
[17]
.
4. Remove the sensor from the calibration solution and rinse it with abundant tap water.
5. Shake the sensor smoothly so that any drops of water that may be adhered to the plastic body
are removed and introduce it in the calibration solution pH=4.0 (red colour). Shake smoothly for
a few seconds and press
“CAL” [18]
key. Once the reading has stabilised, the pH-controller will
automatically leave the calibration mode and will be operative.
