Minebea Intec Signum 3 Ex, Руководство по эксплуатации

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42 Signum 3 Ex
Operation
Purpose
To display the allowable minimum sam-
ple quantity “SQmin” (sample quantity
minimum) in accordance with the Unit-
ed States Pharmacopoeia (USP)� Accord-
ing to USP guidelines, the uncertainty
of measurement may not exceed 0�1 %
of the sample quantity when substances
are weighed with the highest degree of
accuracy for volume determination� This
additional function ensures that weigh-
ing results are within defined tolerance
limits corresponding to the require-
ments of your quality assurance system�
Requirements
The scale must be set up by a service
technician to be able to use the SQmin
function� The technician will determine
the permitted minimum sample quan-
tity and load this to your scale using
the guidelines of your QA system� These
settings cannot be changed by the user�
He or she will document this setting via
a “Weighing module test as per USP”
certificate in which the measurements
and min� sample quantity are logged�
The SQmin function ensures that the
weighing results correspond to USP
guidelines�
Characteristics
– Displaying the minimum sample qual-
ity:
The value is shown in the text line for
4 seconds after the
k
key is pressed�
– If the minimum sample quantity has
not been reached:
Symbol displayed: !
Weight values are marked with a “
!
”
in the printout�
– GLP header: The minimum sample
quantity entered for SQmin can be
included on the printout�
Parameter Factory Setting
Display: SQmin
Off
Print in GLP header:
Off
SQmin Display * No
Yes
Print in * No
GLP header Yes
* = Factory setting
See also the chapter on “Configuration”: Operating Menu
§
Save the settings with the
)
key and exit Setup: Press the
(
key several times�
SQmin Function
Operation