LumaSense Technologies IN 6/78-L - Manual (Page 19)

IN 6/78-L Operating Manual Settings / parameter descriptions · 19
Single storage: The single storage mode is used when you want to reset the
stored value using your own software with the clear command “lx”. This
mode allows a new value to be established after each impulse from the reset
signal.
Double storage: The double storage mode is automatically selected when
entering the reset intervals using the PC interface. This mode utilizes two
memories in which the highest measured value is held and is deleted
alternately in the set time interval (clear time). The other memory retains the
maximum value throughout the next time interval. Disadvantages of
fluctuations in the display with the clock frequency are thereby eliminated.
Note: In the command structure, the maximum storage comes after the exposure
time. This results in:
· clear time £ the adjusted response time is useless
· clear times must be at least 3 times longer than the response time
· only maxima with full maximum value can be recorded, which appear at
least 3 times longer than the response time.
4.6 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 4.5 Maximum/minimum value storage).
4.7 Baud Rate
The highest permissible transmission rate of the serial interface in Baud (Bd)
is dependent on the length of the cable. A standard cable length with RS485
is 2 km at 19200 baud. The baud rate is reduced by 50% if the transmission
distance is doubled.
4.8 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).
4.9 Ambient temperature compensation
Each object has an emissivity e (maximum 100%). If the measured object is not transparent and
has an emissivity of less than 100% (as in most cases), a portion of the resulting radiation will be
Settings:
1200 bd
.
.
.
115000 bd
Settings:
00
...
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