Ext.[T]» Option - Burkert 8025 Notice D'utilisation

4 CONFIGURATION
4.1.5. « EXT. [T ]» Option
This option enables the generation of a dose quantity which is proportional to the time
duration during which binary data input 1 is enabled (see § 4.3.3.). The proportional
relationship is as follows:
Dose Quantity = (A x t) +B
Coefficients A and B have to be entered by the user.
Pulse specification
T :
min
T :
max
Definition:
Minimum time between 2 contiguous pulses:
Practical examples:
- Filling of cans of 5, 10 and 50 litres respectively. The following values can be entered:
A = 5 l/s
B = 0 l
The activation times for binary data input 1 for the three volumes are as follows:
Volume (l)
Duration (s) 1
- Doses of chemical products as a function of required concentration. Volumes of 110, 120,
130, and 150 litres. The following values can be entered:
A = 5 l/s
B = 100 l
The activation times for binary data input 1 for the three volumes are as follows:
Volume (l)
Duration (s) 2
Notes:
- The activation time for the binary data input must always be lower than the actual filling
time. A margin of safety should be allowed when choosing the coefficients A and B.
- The coefficients A and B should be chosen such that the activation times for the binary
data input should be realistic. In the second example, one could have chosen A = 100 l/
s and B = 0 l. The resulting activation times would be 1.1, 1.2, 1.3 and 1.5 seconds. In this
instance the doses would be less accurate.
8025-BATCH-**
BATCH CONTROLLER 8025
where A is the coefficient of proportionality
B is the offset
t is the input 1 activation time
5 10 50
2 10
110 120 130
4 6
E-19-
100 msec
300 sec
5msec
100 msec
150
10