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aditional pictures:
Transmitter for thermocouples
- DIN rail mounting -
with galvanic isolation
The LKM 231 is an analog transmittter for several thermocouples acc. to DIN EN 60584
and DIN 43710. It changes the temperature-dependent thermovoltage of the sensors in an
analog standard output current signal of 4...20mA. It has an galvanic isolation from
input to output. The could-junction compensation happens inside the transmitter by
self. The transmitter LKM 231 will be delivered with the configuration as desired.
The alignment takes place depending upon measuring range and type of thermocouple in
such way that the arising temperature errors are minimized. A voltage-linear alignment
for the subsequent treatment of the measured values in PC or SPS can be made likewise.
This should be indicated for the order as. The final adjustment takes place by means of
span and zero regulators.
Input
thermocouple K, J(L), T(U), N, E;
S B with higher fault
Output
4 ... 20mA
Range
> 200°C*
Zero point
-200°C ... +600°C*
Loop voltage
10...35VDC, reverse protection
Sensor fracture
>20 mA
Shorted Sensor
room ambient temperature
Auxiliary supply
24V DC ±10%, reverse protection
Permissible ripple
< 10 %
Reaction time
< 0.1s
Vibration
5g/10-200Hz
Insulation voltage
1 kV
Linearity error
<0.1% FS*
Error of compensation
<±0.5°C
TCR
<100ppm/°C
Operating temperature range
-25°C ... +85°C
Terminal type
screw terminal
Clamping range
0.2...2.5mm²
Humidity
< 95%
EMC emission
EN 61000-6-3:2001
EMC interference rejection ratio
EN 61000-6-3:2001
Mounting
35mm DIN rail
Current consumtion
max. 40 mA
Case
Case material
Polycarbonat
Case dimension (HxWxD)
75 x 25 x 53 mm
Weight
approx. 60g
*depend on thermocouple
