Endress+Hauser ASP Station 2000 Zusatzbeschreibung Seite 12

ASP Station 2000
Example
Unit settings/inputs /
analogue input
Programme change/programme 1
Distribution
12
The minimum dosing volume is 20 ml.
If a dosing volume of less than 20 ml is calculated the unit always takes 20 ml
samples.
The maximum dosing volume is 200 ml.
If a dosing volume of less than 200 ml is calculated the unit always takes 200
ml samples.
Dosing volume
200 ml
100 ml
20 ml
0 2
4 7,2
0 10%
If the largest dosing volume is to be reached at small flow rates then this can
be achieved by increasing the volume factor.
Setting up example for operating mode "flow proportional sampling"
A flow proportional sampling system in 15 minute cycles and a 12 bottle distri-
bution with 3 litre bottle volume is set up. The filling time per bottle is two
hours.
A flow measurement with a 4 ... 20 mA signal is available. Maximum flow rate
(full scale deflection) is 1000 m
3
500 m /h. Due to this the following volume factor is calculated:
Full scale deflection
Volume factor V @ —————————— = ————— = 2
Maximum flow rate
Signal 4-20 mA
Eng. units m
Decimal point XXXX
Range 1000 m
Name 2h-DFP
Sample mode Flow
Time 00:15
Volume factor
-mode Time
Time 02:00
Bottles
Volume factor 2 Volume factor 1
Volume factor 0,5
10
20 mA current (4...20 mA)
12
50%
100% flow rate
3
/h. The actual maximum flow rate is only
1000 m
500 m
Q
3
/h
3
/h
F low proportional sampling
V
e.g. 15 min cycle;
sample
2,0 Ti
12
Flow proportional sampling
20 mA current (0...20 mA)
3
/h
3
/h
d t i h
t
t