Otletek AN-2030 Manual De Instrucciones página 28

Humidity calibration procedure:
First, locate the calibration paper that was
supplied with your meter (it is a small white
slip of paper with numbers on it). You will
find on the bottom left corner the word
VOUT, followed by two numbers (voltage
input value at 0% and 75%). It will look similar
to this:
Example: Vout @0% = 0.744
@75.3% = 3.056
With the unit on, press and hold the on/off
button for 10 seconds. The display will turn
off and then back on, displaying the number
700 (Fig. A). Enter the first voltage input
number (in the above example, the number
is 744) into this screen by pressing the mode
button to scroll up (omitting the decimal).
Note: When in humidity calibration mode,
the mode button only scrolls up, not down,
so it is important that you do not miss the
number you are entering. When finished,
press the on/off button again, you will see
the number 3000 (Fig. B). Enter the second
voltage input number (3056 in the example
above), using the same procedure as before.
To store the changes, press the on/off
button. The unit will then shut off with the
new values stored internally. (Even though
they show default values again when you
return to calibration mode, the unit did hold
the calibration.) NOTE: It is very important
that the voltage input information be kept
with your meter instructions.
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