20
4.10 Analog output
The analog output has to be selected according to the signal input of the
connected instrument (controller, PLC, etc.).
4.11 LED targeting light
If the pyrometer is supplied with power, the LED targeting light is automatically active. Once
connected, it can be adjusted even if the targeting light is off. Independent of this setting, the
targeting light can be switched on or off (targeting icon
) using the software InfraWin.
4.12 Subrange
You have the opportunity to choose a subrange (minimum span 51 °C) within the basic
measuring range of the pyrometer. This subrange corresponds to the analog output. Reduction
of the temperature range increases the accuracy of the analog output.
Also when setting the subrange, it is possible to fulfill the requirements of the “auto” clear
mode of the maximum value storage (see 4.9
).
4.13 Ambient temperature compensation
The compensation of the ambient temperature can be set for temperatures
within the basic measuring range. The standard setting of this parameter is
“auto”, because the temperature of the air around the pyrometer is normally
the ambient temperature of the measured object. Should the measured
object be placed in an area with a higher wall temperature (e.g. inside a
furnace), the measurement might be falsified (probably too high temperature indication). This
influence can be compensated by presetting the ambient temperature of the object (presetting
within the measuring range of the instrument).
After switching over to “man” the corresponding data field T
amb
is activated so that the ambient
temperature value can be entered.
Attention: It has to be considered that this method only improves the results if the
ambient temperature at the place of the measured object is always constant and the
emissivity is well known.
4.14 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).
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