Calorimeter Control Limit Values In Btu/Lb When Benzoic Acid Is Used As A Test Sample - Parr Instrument 6400 Operating Instructions Manual

6400

Calorimeter Control Limit Values in BTU/lb When Benzoic Acid is Used as a Test Sample

Accepted heat of combustion taken as 11373 BTU/lb.
Instrument precision 0.10%.
Control limits based on 99% confidence (3 sigma) values.
Values are in BTU/lb.
NUMBER OF UCL FOR THE RANGE
OBSERVATIONS (HIGH – LOW) WITHIN
IN A GROUP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Table 6-3
THE GROUP
41.9
49.6
53.4
55.9
57.8
59.2
60.4
61.3
62.2
62.9
63.6
64.2
64.8
65.3
65.8
66.2
66.6
67.0
67.4
67.7
68.0
68.3
68.6
68.9
UCL FOR THE
DEVIATION OF THE GROUP MEAN
RSD WITHIN
FROM THE ACCEPTED VALUE OR
THE GROUP
0.261%
0.228%
0.209%
0.196%
0.187%
0.181%
0.175%
0.171%
0.167%
0.164%
0.161%
0.159%
0.156%
0.154%
0.153%
0.151%
0.150%
0.148%
0.147%
0.146%
0.145%
0.144%
0.143%
0.142%
Standardizations
MAXIMUM PERMISSIBLE
GRAND MEAN
34.1
24.1
19.7
17.1
15.3
13.9
12.9
12.1
11.4
10.8
10.3
9.8
9.5
9.1
8.8
8.5
8.3
8.0
7.8
7.6
7.4
7.3
7.1
7.0
6.8
w w w . p a r r i n s t . c o m
6
51