Process Control - A Practical Approach



Errors in the first edition

A number of errors identified in the first print run were corrected in the first reprint released in August 2011. Those identified since then are listed below.


page

location

published

corrected

12
Equation (2.15)
49
paragraph 3, line 2
Setting them both to 0 will give the controller as described by Equation (3.19), while setting them both to 1 will give the ...
Setting them both to 1 will give the controller as described by Equation (3.19), while setting them both to 0 will give the ...
109
paragraph 1, line 2
... it exhibits to behaviour similar...
... it exhibits behaviour similar ...
155
Figure 6.9
PV
DV
164
paragraph 1, line 1
... fast model as correction term.
... fast model as a correction term.
165
paragraph 3, line 1
Figure 7.4 shows the impact the process ...
Figure 7.4 shows the impact of the process ...
203
paragraph 7, line 2
... where x is the inferential and y the laboratory result ...
... where x is the laboratory result and y the inferential ...
287
paragraph 3, line 1
Taking the first the first of these ...
Taking the first of these ...
324
Figure 12.86
upper TC and V/F
upper TC and V/F constant
325
Figure 12.87
upper TC and V/F
upper TC and V/F constant
343
Equation (12.105)

 

The table below shows all the known errors since discovered in the first print run.


page

location

published

corrected

xii
paragraph 5, line 4
... supplementary to those provide by the MVC ...
... supplementary to those provided by the MVC ...
11
paragraph 2, line 6
... need to be tuned well before ...
... need to be well tuned before ...
13
Equation (2.20)
13
Equation (2.27)
14
Equation (2.28)
20
paragraph 4, line 3
... if we trying to obtain ...
... if we were trying to obtain ...
32
paragraph 2, line 3
... is opened in proportional to the ...
... is opened in proportion to the ...
42
paragraph 2, line 2
... not only on Kc but also on Ti and Td.
... not only on K'c but also on T'i and T'd.
47
paragraph 3, line 2
... response would the same for both ...
... response would be the same for both ...
54
Equation (3.63)
55
paragraph 2, line 10
... characterise such process ...
... characterise such a process ...
55
Equation (3.68)
74
paragraph 1, line 2
... controller treated as ...
... controller can be treated as ...
78
paragraph 2, line 2
Provide a computer-based ...
Provided a computer-based ...
79
paragraph 5, line 6
... or it may some ...
... or it may be some ...
97
paragraph 3, line 5
... and the multiplying the control gain ...
... and then multiplying the controller gain ...
122
paragraph 3, line 1
While this does give a ...
While this does not give a ...
154
Equation (6.11)
154
Equation (6.12)
158
paragraph 7, line 1
... method, using Laplace transforms is presented ...
... method, using Laplace transforms, is presented ...
176
paragraph 4, line 5
... the relative gain indeterminant.
... the relative gain indeterminate.
179
paragraph 2, line 1
... LC shown in Figure 8.4 ...
... LC shown in Figure 8.5 ...
204
paragraph 2, line 1
... a value close to 1 does necessarily ...
... a value close to 1 does not necessarily ...
206
paragraph 5, line 2
... according the statistical test ...
... according to the statistical test ...
225
paragraph 7, line 3
... the burner tip and potentially ...
... the burner tip and is potentially ...
227
paragraph 1, line 1
... override the temperature controller.
... override the flow controller.
233
paragraph 1, line 1
We have to be sure the control does increase ...
We have to be sure the control does not increase ...
234
paragraph 1, line 3
... if the fan it at maximum ...
... if the fan is at maximum ...
244
paragraph 4, line 1
... the ratio of the specific heats of the ...
... the ratio of the specific heat of the ...
252
paragraph 1, line 4
To do achieve this we need ...
To achieve this we need ...
254
Equation (11.20)
255
Equation (11.23)
255
Equation (11.24)
268
paragraph 8, line 1
By combining Equations (12.13) and (12.14) we ...
By combining Equations (12.16) and (12.17) we ...
269
paragraph 4, line 1
... B and V from Equation (12.16), ...
... B and V from Equation (12.19), ...
280
paragraph 7, line 1
Figure 12.23 shows the effect of that varying ...
Figure 12.23 shows the effect that varying ...
281
Figure 12.24
H8 in bottoms
C3H8 in bottoms
316
paragraph 3, line 9
In such a case it is unlikely that ...
In such a case it is likely that ...
349
paragraph 1, line 2
Since these are linearly rated to ...
Since these are linearly related to ...
350
paragraph 4, line 3
... it in indicative of the severity ...
... it is indicative of the severity ...
357
paragraph 3, line 4
... as weighting factors than are adjusted ...
... as weighting factors that are adjusted ...
364
paragraph 2, line 3
... temperature (on air fins in hot ...
... temperature (e.g. on air fins in hot ...
366
paragraph 2, line 1
... reducing pressure reducing the temperature ...
... reducing pressure reduces the temperature ...
372
paragraph 4, line 5
... may change by the process operator's ...
... may change but the process operator's ...