22
•
Maintenance of the anode and the cathode
The sensitive part of the probe is composed by an anode and a cathode; the two elements are composed
by precious metals. Over time, these metals can be passivated by decreasing the efficiency of the probe, up
to the point that the probe does not calibrate.
In this case, remove the membrane and the passivation with very fine abrasive paper, gently scratching the
metal parts; wash everything with distilled water and proceed with the
Replacement of Electrolyte.
Perform the
Calibration of the sensor.
If it does not work, proceed with the
Replacement of the membrane
.
•
Replacement of the membrane
If the membrane has ripples or irregularities, it must be replaced with a new one.
Remove the membrane cap and replace it with a new and intact one.
With the new membrane, follow the procedure of the
Replacement of Electrolyte.
If, even after these procedures, the probe does not calibrate, replace the probe.
Instrument Setup Menu
•
In measure mode, press key
to access the SETUP menu.
•
Use the directional keys to move to
SETTINGS P9.0
and access the menu by pressing the key
.
•
Move with the keys
and
to select the program to access.
The table below shows the setup menu structure for the general settings of the instrument; for each
program, there are the options that the user can choose and the default value:
•
Composition of the setup menu for Setting menu
Program
Description
Options
Factory Default
Settings
P9.1
TEMPERATURE U.M.
°C / °F
°C
P9.3
BACKLIGHT MODE
INDOOR – OUTDOOR
INDOOR
P9.4
BRIGHTNESS
LOW – MEDIUM - HIGH
MEDIUM
P9.5
SLEEP MODE
OFF – 2 MIN – 5 MIN
2 MIN
P9.8
RESET
YES - NO
NO
P9.9
AUTO POWER-OFF
YES – NO
YES
P9.1 Unit of measurement for temperature
Access this setup menu to select the temperature unit to use:
•
°C
-default-
•
°F
P9.3 Backlight Mode
Access this setup menu to select the contrast mode to use for the display backlight:
•
INDOOR (In)
– Recommended if you use the device indoors.