Operating instructions

Calibration/Adjustment
and Linearization Functions
During calibration, the span* of your balance
is adjusted to changes in ambient conditions.
Relinearize your balance each time you set it up in
a different area or recalibrate (re-adjust) it when the
ambient conditions change (for example, temperature
or barometric pressure). Even if these conditions are
constant, the balance should be calibrated once
a day. To meet the highest requirements for accurate
weighing, we recommend that you calibrate
the balance before each weighing series or set the
isoCAL self-calibrating function to “ON.”
W : Self-calibrating Function “isoCAL”
The criteria for fully automatic calibration
are as follows:
– Two hours have passed since the balance was
turned on (“cold start”)
– The difference between the current temperature and
the temperature during the last calibration procedure
is greater than ± 1° Kelvin
– (Up to) four hours have passed since the last
automatic calibration
Flashing W Symbol
If the W symbol flashes, the balance wants to self-
calibrate. You do not need to interrupt your weighing
series; the balance will wait until you have unloaded
the weighing pan and have not used the balance for
one minute before performing internal self-calibration.
During this procedure, the draft shield must be closed
to ensure that calibration is done correctly. The
symbol flashes until the balance begins self-calibration
or until you activate one of the calibration functions
manually (see next page).
To turn off the self-calibrating function by menu code,
refer to part 2, “Balance Operating Menu.”
* = The difference between the indication of a weight
at maximum capacity and the indication at zero
1–30