ABB SM500F User Manual page 112

SM500F
Field mountable paperless recorder
110
Note.

Analog totalizers only.

If the recorder holds the relationship data between the selected
engineering range unit of measurement (see page 97) and the
selected totalizer units (see page 107), the totalizer count rate is
calculated and displayed automatically.
Set the required totalizer count rate (if necessary) and cut off value.
The count rate is determined by the maximum number of engineering
units (or pulses) per second and the smallest totalizer increment:
engineering full scale value (rate)
------------------------------------------------------------------------- -
engineering units (in seconds)
Example – to totalize a flow with a maximum rate of 2500 liters/minute (=
3
2.5m /minute) to the nearest 0.1m
150m 3 /hour
-------------------------------- -
3600 seconds
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 108.
The totalizer cut off value is the lowest input value (in engineering units) at
which the totalizer is to stop counting.
3
, the calculation is as follows:
= 0.04167 pulses/second
7 Configuration
IM/SM500F Rev. Z