ISR 12-LO/GS Manual
Settings / Parameter Descriptions
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At very short pouring times the amount of values can be reduced. E.g. if a value of 50% is
adjusted, 512 measurement values must be above the beginning of temperature sub range to
start the measurement of the pouring stream.
Pre-run time
(0 to 9.9 s)
:
A certain pre-run time can be set in addition to the start-up condition. This additional period
delays the start of the temperature calculation and can be necessary e.g. if sparks disturb the
measurement at the beginning.
Measuring time
(0 to 9.9 s, 0 = auto)
:
As a standard the measuring time is running in the auto mode, i.e. automatic recognition of
start and end process in combination with a continuous controlling of the start-up condition. If
the start-up condition is not longer fulfilled (temperature below beginning of sub range = end
of pouring process), the system starts with the calculation of the pouring stream temperature.
For this calculation it removes the last 1024 temperature values, makes an average of the
remaining values and shows the calculated temperature on the display.
If a fixed measuring time is set, the system is recognizing the start process automatically and is
using this period for the calculation of the temperature and shows the calculated temp. on the
display.
In both modes the temperature is displayed until the next calculated temperature is available.
Follow-up time
(0 to 9.9 s)
:
Very often at the end of pouring processes liquid iron drops after closing the valve or the
operator opens the valve for a short final refill manually. E.g. this can cause problems that the
instrument starts a new pouring stream measurement although it belongs to the running
process. A certain follow-up time can avoid an early restart of the measurement.
Conclusion:
These are all details which are necessary for a correct detection and measurement of a pouring
stream. The calculation of the average temperature occurs if the measuring condition is not
fulfilled anymore or the adjusted time is expired. The last 1024 measurement values are not
included in the temperature calculation to avoid measurement errors (e.g. caused by sparks or
iron drops).
Example graph:
Measuring condition: x % of 1024 measure-
ment values above beginning of sub range
Time [s]
M
eas
ur
ing t
em
per
a
tur
e [
°C
]
Measuring graph of the pyrometer
Pre-run time 0 ... 9.9 s
Measuring time („auto“ mode)
1024 values (fixed)
without consideration
Follow-up time 0 ... 9.9 s
Temperature sub range
of the pyrometer
Display of the calculated
pouring stream temp.
