45
Determination of the Repeatability (reproTEST)
Definition
Repeatability is the ability of the scale to
display identical readouts when it is loaded
several times with the same weight under
constant ambient conditions (also called
“reproducibility”).
The standard deviation for a given number
of measurements is used to quantify the
repeatability.
Purpose
The “reproTEST” function automatically
determines the repeatability of results
(based on 6 individual measurements).
In this way, the scale determines one of
the most important quantities in relation
to the place of installation. The results
are displayed with the scale’s accuracy.
Preparation
§ Turn on the scale: press e
> The Sartorius logo is displayed
> The scale performs a self-test
§ Select reproTEST in the Setup menu:
Press H
§ Select Calibration/adjustment:
CAL-key function: press the
O q keys
§ Select either
reproTEST or
Selection mode (factory
setting): see “Configuration”
§ Exit the Setup menu:
Press the
oo soft key
Check the Reproducibility of the Scale
Step Key(s) (or instruction) Display/Output
1. If
reproTEST is set: isoTST soft key
and proceed with step 4.
If
Selection mode is set: isoTST soft key
2. Select reproTEST
Select soft key
3. Start reproTEST
Start soft key
4. Number of measurements
is displayed; 6 measurements will
now be performed
The standard deviation
is displayed
5. End reproTEST
End soft key
or restart reproTEST
Start soft key
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