44
In order to perform accurate weight measurements, the balance must be calibrated after it has been moved
and when there are large fluctuations in room temperature. Calibration means to adjust and confirm the
balance’s error of span with the use of the weights built into the balance (W-AD/W/X Series) or External
Weights (Class E2 or equivalent) sold separately.
It is also recommended that calibration is performed on a daily basis (before being used every day, etc.).
The meanings of the terms [Adjustment], [Test] and [Calibration] in this instruction manual are explained below:
Adjustment: Adjusting the balance with the use of standard weights so that the span of balance is correct.
Test: Checking the condition of the balance’s error of span with the use of standard weights.
Calibration: Covers both adjustment and tests.
Restrictions on Calibration Usage
Users who log on with guest IDs or user IDs without authority cannot perform adjustment and
tests.
CAL key setting
The following functions are available for calibration. By registering which of the following methods is to
be used in [ CAL] enables registered operations to be started immediately just by pressing [
CAL].
(1) Internal Weight
Calibration
(W-AD/W/X Series)
Checks the balance’s error of span and
adjusts it correctly with the weights built
into W-AD/ W/ X series.
^ [Adjustment and Tests with Internal
Weights (W-AD/ W/ X Series only)]
( P.4 6)
^ [Time-Specified Adjustment (Timer
CAL) Settings (W-AD/ W/ X Series
o n ly )] ( P.5 2)
(2) Internal Weight
Checking
(W-AD/W/X Series)
Checks the balance’s error of span with the
weights built into W-AD/ W/ X series.
(3) External Weight
Calibration
Checks the balance’s error of span and
adjusts it correctly with weights sold
separately.
^ [Adjustment and Tests with External
We i g h ts ] ( P.47 )
(4) External Weight
Checking
Checks the balance’s error of span with
weights sold separately.
(5) Automatic Sensitivity
Adjustment on Startup
(W-AD/W/X Series)
Automatically checks the balance’s error
of span and adjusts it correctly with the
weights built into the balance when W-AD/
W/ X series are started up.
^ [Turning on the Power] (P.26)
(6) Internal Weight
Adjustment
(W-AD/W/X Series)
Checks the error of span for the internal
weights and correctly adjusts the sensitivity.
^ [Adjustment of internal weight (W-AD/
W/ X Series only)] (P.48)
Functions that cannot be registered in [ CAL]
Items (5) and (6) listed above cannot be registered in [ CAL]. It is recommended that internal
weight adjustment explained in (6) is performed periodically.
Functions registered as the default in [ CAL]
[Internal Weight Adjustment] is registered in [ CAL] as the default for W-AD/ W/ X series,
and [External Weight Adjustment] is registered in [CAL] as the default for Y series.
Glass Draft Shield
Details on opening and closing the glass draft shield when inserting and moving weights for
calibration purposes have been omitted from this section. Make sure that the glass draft shield
is closed without fail in order to obtain accurate measurements.
^ [Measurements (Standard measurement Mode)] (P.33)
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55 Calibration Calibration
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