Desoutter Delta Wrench 150 Nm, User Manual, Page: 139 / 184

Part Number
Issue
Date
Page 6159937790
12
03/2018
139 / 184
139 (184) 03/2018
The σ
0
is calculated as follows:
 
 
C
0
Where:
C is given in the table above
 





N
i
i
X X
N
1
2
1
1

NOTE :
σ
0
is used as threshold for σ
i
; if σ
i
is greater than σ
0
, then
0 1
 

CAM is calculated as follows:
i
LTL UTL
CAM

6


Where:
LTL is the lower tolerance limit
UTL is the upper tolerance limit
The C
mk
is calculates as follows:






 

0 0
3
,
3
min
 
LTL X X UTL
C
m m
mk
Where X
m
is the average of the sample
Q544000_2004:
The
dispersion for the j-th group is calculated as follows:
j j
Min Max W
 
j
Where:
Max
j
is the maximum value in the samples of the j-th group.
Min
j
is the minimum value in the samples of the j-th group.
The average value of the W
j
is calculated as follows:
K
W
W
j

