LumaSense Technologies ISR 12-LO/GS - Handbuch (Seite 19)

IMPAC pyrometers ISR 12-LO/GS
19
Note: The smaller the value the higher the chance that daylight or reflections affect a
correct measurement.
8.7
Analog output (0 / 4 mA)
The analog output has to be selected according to the signal input of the connected
instrument (controller, PLC, etc.).
8.8
Setting of sub range (from / to)
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 measur-
ing 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 8.4).
8.9
Address (ADR)
For the connecting of several pyrometers with RS485 with one serial interface it is nec-
essary to give each instrument an individual address for communication. First it is nec-
essary to connect each single instrument to give it an address. After that all instruments
can be connected and addressed individually. If parameters may be changed simulta-
neously 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).
8.10
Baud rate (kBaud)
The transmission rate of the serial interface in Baud (Bd) is dependent on the length of
the cable. A standard cable length with RS232 for 19200 Bd is 7 m, with RS485 2 km.
The baud rate is reduced by 50% if the transmission distance is doubled.
8.11
Temperature display (°C / °F)
The temperature can be displayed in °C or °F.
8.12
Analog Test 10 mA
The test function activates a test current of 10 mA on the analog output, independently if the instrument is
adjusted to 0 ... 20 mA or 4 ... 20 mA. This enables to test external indicators for correct scaling. The reading
of the internal indicator should correspond to the reading of the external indicator. If both displays show dif-
ferent readings the external indicator has a wrong temperature range or input current setting. The test func-
tion is switched off automatically after 1 minute and the instrument is working in the measuring mode.
8.13
Wait time (only available via interface commands, see 15 Data format UPP ® )
Using a pyrometer with RS485 it is possible that the connection is not fast enough to
receive the pyrometer’s answer to an instruction of the master. In this case a wait time
can be set to slow down the data transfer (e.g.: tw = 02 at a baud rate 9600 means a
wait time of
2 /
9600
sec).
Settings:
0 ... 20 mA
4 ... 20 mA
Settings:
00
. . .
97
Settings:
2400 Bd
. . .
115200 Bd
Settings:
°C
°F
Settings:
00 Bit
. . .
99 Bit