LumaSense Technologies IN 520 - Manual (Page 23)

Series IN 500 Operating Manual Device Settings 23
4.1.6 Analog output (OUT)
The analog output has to be selected according to the signal input of the
connected instrument (controller, PLC, etc.). You can choose between current
output (0 or 4 to 20 mA), voltage output (0 to 5 V) or thermocouple output
type J or K.
Caution: Before connecting the pyrometer to other instruments (e.g. controller, PLC,
etc.) the correct analog output (current, voltage or thermocouple), corresponding to the
input of the instrument, has to be adjusted in the converter. A wrong output might
damage the connected instrument.
4.1.7 Temperature display (°C / °F)
The temperature can be displayed in °C or °F.
4.1.8 Compensation of ambient temperature (CMP)
This compensation is used for a very few special applications only. The standard
setting of this parameter is “auto”, because the temperature of the sensor head is
normally the ambient temperature of the measured object. Should the measured
object be placed in an area with a higher ambient temperature (e.g. inside a
furnace), the measurement might be falsified (probably too high temperature
indication). This influence can be compensated by presetting of the ambient temperature of the
object with help of the CMP-function (presetting within the measuring range of the
instrument). 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.
4.1.9 Sensor head temperature (AMB)
The temperature of the sensor head can be displayed.
4.1.10 Baud rate (BD)
The transmission rate of the serial interface in Baud (Bd) is dependent on the
length of the cable. The 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.
4.1.11 Address (AD)
To connect several pyrometers with RS485 (up to 32) with one serial interface, it is
necessary to give each instrument an individual address for communication. First
it is necessary 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 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).
4.1.12 Limit switch (LIM)
The instruments are equipped with a relay contact, controlled by the measuring
signal. The switch point of this relay is adjustable with the function ”LIM” within
the measuring range. The relay contact is closed below the adjusted value, it is
open above it.
Settings:
0-20 mA
4-20 mA
0-5 V
type J
type K
Settings:
°C
°F
Settings:
700 °C
...
-40 °C
auto
Settings:
19200 Bd
...
1200 Bd
Settings:
31
...
00
Settings:
700 °C
...
-40 °C