11 statistical quality control – Rice Lake Ohaus Explorer Pro High Capacity Instuction Manual User Manual

Page 32

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EN-28

Explorer

Pro

Std. Deviation: On, Off (default is On)
Allows Std. Deviation to be turned On or Off. When Std. Deviation
is turned on, the standard deviation calculation of the samples
is included into the final results.

Rel. Deviation: On, Off (default is On)
Allows Relative Deviation to be turned On or Off. When Relative
Deviation is turned on, the relative deviation calculation of the
samples is included into the final results.

Auto Sample: Off, On (default is Off)
Allows Auto Sample to be turned On or Off . When Auto Sample
is turned on, the Statistics process is automatic.

Auto Print: Off, On (default is Off)
Allows Auto Print to be turned On or Off . When Auto Print is
turned on, the final calculated results are automatically printed
out at the end of the Statistics.

Display settings: Custom/ Default (default is Default)
Allows Display Settings to be set to default or custom. If Display
Settings is set to custom, information on the result lines of the
Statistics mode can be individually turned on or off. If Display
Setting is set to default, all the information is turned on.

Exit:
In the sub menu, will return to the previous menu.

In the main men, will return to the last application mode.

View Results:
Allows the calculated results of the Statistics process to be
viewed.

3.4.11 Statistical Quality Control

The Statistical Quality Control (SQC) feature is extremely useful
during various types of process filling operations when it is
desired to monitor and control the process to eliminate under
and over filling. Provisions are made in the balance to
accommodate the weight of various packaging methods. During
operation, parameters of the packaged product are set into the
balance such as packaging weight, acceptable weight limits
and non-acceptable weight limits of the product.

These weight limits are identified as +Tl, +T2, NOMINAL and -
TI, -T2. As samples are weighed and stored in the balance, a
trend analysis is developed and displayed on the balance. Up
to 25 samples in a batch with up to ten batches are visible on
a trend screen for quality control purposes. Each batch of
samples is shown on the display which indicates the maximum/
minimum standard deviation and mean values for each batch.
An on going examination of the relative deviation of the samples
along with other statistical data can be viewed and is stored.
By observing the results of the VIEW TRACE screen, you can
effectively monitor the filling process operation. Setup parameters
can be stored in the library and up to 5 products with statistical
history can be stored in memory. All SQC information can be
printed.

USE

SQC 01/01/03 03:05:45 PM

RESULTS

SETUP

START

0g

6100g

*

Tare: 0.00 g
Max: 0.00 g

Sum: 0.00 g

Min: 0.00 g

Mean: 0.00 g

0.00

g

Before using the SQC feature, the SQC Setup should be reviewed.
Highlight the SETUP soft key and press the Enter button. Assign
a Library Name.

NOTE: All SQC settings made with a Library Name will be directly
associated with the Library name. When a Library Name is
called up, all settings will be retained with the Library Name.

Review the settings and change as necessary. Enter the Unit,
Number of Samples, Tolerance (either weighing or percentage),
Tare, Auto Sample, Auto Print, Display Settings (Default or
Custom), and Batch Name.

SQC SETUP

Library Name

:

SQC

Unit

: g

Number Of Samples

: 3

Tolerance

: Weighing

Tare Required

: Off

Auto Sample

: Off

Auto Print

: Off

Clear All Data

: No

Display Settings

: Default

Batch Name

: Batch 1

View Trace
View History

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