Kübler CODIX 530 Bedienungsanleitung Seite 12

8.2 Throughput measurement with totalising
The throughput and, alternately, the total quantity
are to be displayed.
The measuring sensor has linear characteristics
(in the case of non-linear sensors, linearizing ele-
ments are to be connected). It delivers 4 mA at
rest and 20 mA at maximum throughput, which
corresponds, in this example, to 90 l/min.
Select under "Range" the measuring range from 4
to 20 mA and, for the maximum "hi.act and mini-
mum "lo.act" input signals, the corresponding fac-
tory setting.
Allocate the display value 0 to the lowest input
signal "lo.act", and the display value 1.5 (in
liters/second) to the highest input signal "hi.act".
Set the adding counter decimal point "dp.tot" ac-
cording to the maximum expected quantity: for a
100 000 l installation, select zero decimal and,
since this still is not sufficient, extend the display
range by two digits with a "Scale" of 0.01, as to
display the total volume in hectoliters.
Press the right key to switch between the momen -
tary value display and the adding counter value
display.
Different factors also allow displaying the total vol-
ume in other units, for example, with the factor 2,
in 0.5-l bottles, or, with the factor 2.6420, in gal-
lons.
8.3 Kilometers measurement with totaling
The instantaneous speed in km/h and the total
running time of an engine on a testing stand are
to be displayed.
The measuring sensor delivers 4 mA at rest and
20 mA at maximum speed, which corresponds, in
this example, to 180 km/h.
Select under "Range" the measuring range from 4
to 20 mA and, for the maximum «hi.act » and min-
imum «lo.act » input signals, the corresponding
factory setting.
6
Allocate the display value 0 to the lowest input
signal "lo.display", and the display value 180 to
the highest input signal "hi.display".
This way the device displays the instantaneous
speed in km/h.
Set the adding counter decimal point "dp.tot" ac-
cording to the maximum planned test time, for ex-
ample, for a 24-hour test at maximum speed, four
digits before the decimal point will be sufficient.
The sample rate of the adding counter is 1 sec -
ond. To add the covered distance, use the factor
to adjust the speed per second:
1/3600=0.00027778, which corresponds, at maxi-
mum speed, to 0.05 km/sec.
So set the factor to 0.0278 and the scale to 0.01.
This way, after 24 hours, the rounding error would
be only 3 km, which, for a total distance of 4320
km, would correspond to 0.7‰.