Minebea Intec Signum 3 Ex - Sqmin Function

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 “Conguration”: Operating Menu
§ Save the settings with the ) key and exit Setup: Press the ( key several times�
SQmin Function
Operation