ISR 12-LO/GS Manual
Settings / Parameter Descriptions
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4.9
Switch-off limit (OFF / %)
The switch-off limit is a function to avoid measuring errors caused by too
low signals. Ratio pyrometers are able to measure temperatures correctly
even with very low signals, i.e. for example through a dirty viewing window
or if dust exists in the field of view or if the spot is not filled by the
measuring object. If the signal is too low for a correct measurement, the pyrometer interrupts
the measurement and displays 1° below of beginning of the temperature range. Depending of
the application the switch-off limit can be adjusted between 2 and 50%, ex works at delivery set
to 10%.
Note:
The smaller the value the higher the chance that daylight or reflections affect
a correct measurement.
4.10
Analog Output
The analog output must be selected according to the signal input of the
connected instrument (controller, PLC, etc.).
Note:
Settings for Analog Output: 0 to 20 mA or 4 to 20 mA 0 to 20 mA/21 Low or
4 to 20 mA/21 Low (setting /21 Low = Analog Out shows 21 mA if signal intensity falls
below Switch-Off level).
4.11
Sub Range
You have the opportunity to choose a subrange (minimum 51°C) within the basic measuring
range of the pyrometer. This subrange corresponds to the analog output. “
from
“ describes the
beginning of this measuring range, “
to
“ the end of the range.
For automatic detection of a pouring stream the beginning of the temperature sub range must
be set to a value that makes sense. Such a value is approx. 200 °C below the anticipated value.
Additionally, with the setting of a subrange it is possible to fulfill the requirements of the
“auto” clear mode of the maximum value storage (see
4.7
).
4.12
Device Address
When connecting several pyrometers to one serial interface with RS485, it is
necessary for each instrument to have its own device address for
communication purposes. First, it is necessary to connect each instrument
separately to give it an address. After that, all instruments can be connected
and addressed individually.
Note:
Only via own communication program with interface command
(not
possible with InfraWin, because InfraWin automatically detects a connected
pyrometer): If parameters should be changed simultaneously on all pyrometers, the
global
Address 98
can be used. This allows you to program all pyrometers at the
same time, regardless of the addresses that have already been assigned. If the address
of a pyrometer is unknown, it is possible to communicate with it using the global
Address 99
(connect only one pyrometer).
Settings:
2%
. . .
50%
Settings:
0 … 20 mA
4 … 20 mA
Settings:
00
. . .
97
