Endress+Hauser mypro CLD 431, Руководство по эксплуатации

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5.4
Alpha table
In order to implement a special, medium-
specific temperature compensation function,
a table is stored in the MyPro CLM 431 / CLD
431. The
α
characteristic is entered in a table
which may contain 2 to 10 elements. Each
table element consists of an
α
value and the
associated temperature.
The
α
table is activated via the “tab” mode in
matrix position VH 12. However, the activation
should not be performed unless the values
have been edited (VH 60 ff) since changes in
the
α
table become effective immediately
(resulting in error message 150 in position
VH 62).
Programming sequence for
α
table:
1. Enter number of elements (VH 60)
2. Select element 1 (VH 61)
3. Enter temperature value 1 (VH 62)
4. Enter
α
value 1 (VH 63)
5. Repeat steps 2 to 4 for all other
elements of the table
■
Operating level 2
Function group
α
TABLE
Function/display
Matrix
VH
1)
Description
Setting
Default Customer
Number of
elements
VH
60
Entry of number of table elements.
Value range:
2 ... 10
2
Selection of
element
VH
61
Programming of the selected table element starts with the
selection of the element. This is followed by the entry of
the temperature value and corresponding
α
value for the
table element.
Value range:
1 ... number of elements
1
Temperature
value
VH
62
Temperature value of current table element.
Note:
The temperature values must increase from one
element to the next. The required minimum
distance between temperature values is 10 K.
Error message E150 indicates an incorrect
temperature entry.
Value range:
–35 ... 250 °C
0
α
value
VH
63
Temperature coefficient of current table element.
Value range:
0.0 ... 10.00 % / K
2.10 % / K
Functional description mypro CLM 431 / CLD 431 conductive
32 Hauser