15
UM Termometri serie 7Vio ENG rev.0 14.04.2021
Other Features
•
Automatic switch-off
The instrument shuts down automatically after 20 minutes of inactivity. To disable automatic shutdown
To disable automatic shutdown, go to parameter P9.9 in the Setup menu and select Off.
•
Offset adjustment
All instruments are factory pre-calibrated and remain stable over time, but in the event of a reading error,
the instrument can be recalibrated to eliminate this error.
To recalibrate the instrument at 0.0°C proceed as follows:
•
prepare ice with double-distilled water;
•
place the ice cubes in a 500ml beaker up to half its volume;
•
add double-distilled water until it reaches ¾ of its volume;
•
place the beaker on a magnetic stirrer under gentle agitation;
•
immerse the probe in the beaker, ensuring that it is immersed in water and does not touch the wall of
the beaker;
•
cover the beaker with polystyrene to isolate the water/ice mixture from the air as much as possible;
•
stir for about 10 minutes;
•
in this way a temperature of 0°C is reached.
If the instrument reads 0.0°C (± measurement chain accuracy) then the instrument is operating correctly
and no adjustment is required, if not, go to the Setup menu P7.2, adjust the value using the arrows and
confirm with the key.
or
arrows and confirm with the key
.
In the centre of the display, the corrected temperature is displayed in large letters, while the partial value
of the adjustment is displayed below it.
The adjustment affects the entire measurement scale, e.g. if you correct by -1.0°C, then the measurement
shifts by -1.0°C over the whole range.
The setting made in this way remains in the memory both after switching off the instrument and when
replacing the batteries.
If the probe is replaced, reset the factory calibration from the Setup menu P7.6, and proceed with the new
calibration if necessary.
Note
: if there is no probe connected, it is not possible to change the offset.
A "CONNECT THE PROBE" error will be displayed, accompanied by a flashing icon
.
