24
CALIBRATION TEST
Rather substantial changes In barometric pressure and temperature may affect t
he display response of these highly accurate Research Series balances.
To ensure that you obtain the full accuracy of these balances, even when you use
the entire weighing range, we have implemented a calibration lest function. It will
help you decide whether o r not you need to recalibrate your balance (for exam-
ple, to maintain the same accuracy during long-term weighing series).
Press the tare control (24) for at least 2 seconds until "C.l." and "CAL" are dis-
played (next to the
key).
Select the calibration test by pressing the
key (21) twice until "C.t." is dis-
played.
Unload the balance, make sure the draft shield is closed and tare.
"C.t." Stands for “calibration fest.”
When the balance displays a zero readout, press the
key (20). The built-in
calibration weights are now internal by applied by servomotor.
Afterwards, the deviation of the momentary weight readout from the target weight
(displayed in grams only) is indicated.
lf external interference affects the calibration test procedure, you may obtain a
brief display of the error message "ERR 02."
In this case, tare and then press the
key again when a zero readout appears.
Important Note
The balance should be recalibrated if the deviation of the readout from zero ex-
ceeds the tolerance of the calibration weights used (accuracy class E2 ± 0.3mg).
-key (20): The balance automatically calibrated
(see also page 21).)
or
-key (21): Quits the calibration test
An acoustic Signal indicates the end of the calibration test.
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