LumaSense Technologies ISR 12-LO/GS - Handbuch (Seite 15)

IMPAC pyrometers ISR 12-LO/GS
15
Targeting light
on / off: Pushing the PL key in measuring mode the laser targeting light is
switched on.
As the laser targeting light influences the measurement of the
ISR 12-LO/GS the last measured value is hold in the analog out-
put and the display shows a blinking “8000”. The laser targeting light is switched off
automatically after approx. 2 min or after a further push of the PL key.
Serial interface: Switch for selection of digital interface RS232 or RS485.
7.1
Special indications
Display Description
7777 warming-up time after switching on
8888 measurement exceeds the end of sub range
8000 (blinking) laser targeting light on (analog output keeps the last measurement
value)
1° below beginning of sub range indication after warming up time while no pouring stream temperature is
available
Display blinking Signal strength in foundry mode is below the adjusted level (see also 9.8
Measurement (color bar)
).
7.2
Factory settings
Pouring stream mode = On
Start-up condition = 50%
Pre-run time = 0.5 s
Measuring time = 0 (auto)
Follow-up time = 0.5 s
Emissivity (
ε
) = 1.000
Emissivity slope (K) = 1.000
Exposure time (t
90
/ s ) = 0.00
Clear time (t
CL
) = 0.00
Measuring mode (1 / 2 / M) = 2
Analog output (0 / 4 mA) = 0 ... 20 mA
Switch-off level (OFF / %) = 10%;
Sub range (from / to) same as temperature range
Address (ADR) = 00
Baud rate (kBaud) = 19.2 kBd
Temperature display (°C / °F) = °C
Interface (RS485 / RS232) = RS232
8 Parameters
8.1
Pouring stream mode
The start and end processes of the pouring disturb the temperature calculation and have to be separated.
Unfortunately these processes are not constant and vary for each pouring.
That is the reason why it is impossible to remove fixed periods for start and end processes for a correct cal-
culation of a pouring stream temperature. An intelligent measuring system is necessary.
To enable the automatic operation of the system and to adapt it to the requirements of the pouring machine,
a few presettings have to be done via software InfraWin (see section 9 Settings via interface and soft-
ware
).
Temperature sub range:
To enable the system to recognize the start and end of the pouring process, the beginning of the tempera-
ture sub range must be set to a useful value (approx. 200°C below the expected pouring temp.)
Start-up condition or measuring condition (0 ... 1024 values, adjustable in %):
The measuring condition controls continuously if an adequate pouring stream is in the spot size of the py-
rometer. If the measuring temperature of the pyrometer exceeds the beginning of the sub range, the control
starts. It ends if the temperature is fallen below this temperature. Only if the pyrometer detects continuously
the adjusted values (0 ... 1024) above the sub range, the measurement time starts. The internal measuring
time of the pyrometer is approx. 1 ms, i.e. to detect 1024 temperature values is needs approx. 1 s.
At very short pouring times the amount of values can be reduced. E.g. if a value of 50% is adjusted, 512
measurement values have to be above the beginning of temperature sub range to start the measurement of
the pouring stream.