How To Calibrate The Balance - Mettler Toledo PE200 Mode D'emploi

OPERATION: How to calibrate the balance
Your balance must be calibrated (i.e., set to the correct weight indication) every time its location is changed; this is the only way to ensure accurate weighings.
Before being calibrated, the balance must be left switched on for at least 30 minutes (warm-up time).
Depending on your balance model, you will need certain test weights for calibration. These are listet under "ACCESSORIES, Optional equipment" for each balance
model. The test weights must always be handled carefully; they should not be picked up with your bare hands.
Checking the calibration
– Press single control bar (15): display will
indicate zero.
– Place test weight on pan, read indication on
display.
If the result displayed by the balance corresponds to
the weight indicated on the test weight down to the
last decimal, your balance is O.K. If not, it must be
calibrated.
Using calibration screw (1), adjust calibration as
described in the adjacent dolumn.
Recheck calibration after every correction (see
column at right).
Adjusting the calibration
– Place test weight on pan, press single control
bar.
– Remove test weight from pan.
– Turn calibration screw (1):
Clockwise, if the indicated weight value is
larger than the test weight;
Counterclockwise, if the indicated weight value
is smaller than the test weight.
With each turn of the screw, the calibration is changed
by about:
0.16 g for the PE200, PE400 (test weight 200 g),
1.6 g for the PE2000, PE4000 (test weight 2000 g).
Rechecking the calibration
After every correction made with calibration screw
(1), the calibration must be rechecked:
– Press single control bar (15), display will
indicate zero.
– Place test weight on pan and read result.
If the result now displayed by the balance
corresponds to the weight indicated on the test weight
down to the last decimal, your balance is ready for
use.
If not, continue adjusting calibration screw (1) until
the balance is correctly calibrated.
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