ENGINEERING DOCUMENTATION 49
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12.23 Calculator for good packaging control (tP)
Note: This function is enable for special orders substitutable with other functions.
The function allows performing not destroying control of 60, 100 or 160 samples
of packed goods. Calculation formula complies with the description of reference
method described in act of law from 26.07.2001 (with later changes).
Scale operator enters nominal net mass (Qn) and sample quantity taken for control
(quantity refers to total quantity of samples 1 and 2 in description of reference
method.
Accepting successive measured packages (storing in register) is performed
automatically after load is put on and scale indication is stable.
Each time after load is put on printout is performed: measurement number, result,
date and hour.
Accepting next measurement is possible after taking last load off.
For obtained measurement series scale calculates:
-
x
-average mass as (sum x)/n
- Min -minimal mass in n samples
11.5
11.5 - Max -maximal mass in n samples
- R = Max-Min -the difference between max and min
- S -standard deviation
2
)(
)1(
1
∑
−
−
=
n
n
xx
n
S
- defective samples count -count of samples with mass Qn-2T1<x<
Qn-T1
-disqualifying samples count -count of samples with mass <Qn-2T1
Results of statistical calculations and histogram are printed on a printer.
Operation sequence:
1. Press MENU key.
2. When "F..-tP" is displayed press
→
T
←
key.
The following options appear successively on display:
- "F..-0"- leave function,
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