ScreenMaster RVG200
Paperless recorder
7 Configuration
106
OI/RVG200-EN
Note.
The following parameters are applicable only to analog totalizers.
Count rate/Cut off
Set the required totalizer count rate (if necessary) and cut off value.
Count rate
Note.
If the recorder holds the relationship data between the selected
engineering range unit of measurement (see page 92) and the selected
totalizer units (see page 103), the totalizer count rate is calculated and
displayed automatically.
The count rate is determined by the maximum number of engineering
units (or pulses) per second and the smallest totalizer increment:
Example
– to totalize a flow with a maximum rate of 2500 liters / minute
(= 2.5m
3
/ minute) to the nearest 0.1m
3
, the calculation is as follows:
The resulting value must be within the range 0.00001 to 99.99999. The
totalizer increment is determined by the number of decimal places in the
Predetermined count
value – see page 104.
Cut off
Set the required totalizer cut off value – the lowest input value (in
engineering units) at which the totalizer is to stop counting.
engineering full scale value (rate)
engineering units (in seconds)
--------------------------------------------------------------------------
150m
3
/hour
3600 seconds
---------------------------------
0.04167 pulses/second
=
Input signal
Units
Totalizer value
The totalizer pulse rate is
proportional to the input signal.
At this point it is 0.0208 pulses
per second.
Area = total
volume of flow
m
3
/hr
m
3
/sec
1 hr
1 hr
