- Thermocouples
-
Resistance thermometers
- with connection head
- Resistance thermometers with explosion proof
-
Special types
- RT with special fittings
- Room resistance thermometers
- RT with hand grip for penetration
- Combination RT (resistance and glass thermometers)
- Average value probe
- Small resistance thermometer for srewing in (compact thermometer)
- Sheathed resistance thermometer with connectorless wires
- Temperature probes with magnet for surface measurement
- Measuring inserts
- Precision resistance thermometer
- Cable sensors
- Cable sensors
-
Components and accessories
- Connection heads
- Thermo junction
- Connector
- Fixing materials
- Extension protecting tubes
- Calibration block
- Miniature fixed-point cell
- Reference junction
-
Transmitter
- Transmitter for TC, 4..20mA
- Transmitter for TC, 0..10V
- Transmitter for Pt100, Pt1000, 4..20mA
- Transmitter for Pt100, Pt1000, 0..10V
- Switching transmitter for Pt100, freely configurable
- Transmitter with LCD-Display
- Analog power supply for transmitters
- Transmitter for TC, DIN-Rail mounting, 4..20mA
- Transmitter for TC, DIN-Rail mounting, 0..10V
- Transmitter for Pt100, Pt1000, DIN-Rail mounting, 4..20mA
- Transmitter for Pt100, Pt1000, DIN-Rail mounting, 0..10V
- Digital thermometer
DIN rail transmitter LKM 231 for thermocouples with output signal 4...20mA, with galvanic isolation
The LKM 231 is an analog transmitter for various thermocouples according to DIN EN 60584 and DIN EN 43710. It converts the temperature-dependent thermoelectric voltage of the sensors into a standard signal of 4...20mA. The temperature compensation of the reference junction is done in the transmitter itself. It has a galvanic isolation between input and output. The transmitter is delivered from the factory calibrated to customer specifications. Depending on the measuring range and thermocouple type, the calibration is carried out in such a way that the occurring temperature errors are minimized. A voltage-linear adjustment for further processing of the measured values in the PC or PLC can also be carried out. This should be specified when ordering. A span and zero controller allows subsequent fine adjustment. The supply can be made from a voltage source.
* depends on thermocouple
Output |
---|
4 ... 20mA |
Sensor fracture |
---|
>20 mA |
Auxiliary supply |
---|
24V DC ±10%, reverse protection |
Reaction time |
---|
< 0.1s |
Error of compensation |
---|
<±0.5°C |
Terminal type |
---|
screw terminal |
Current consumtion |
---|
max. 40 mA |
Case |
---|
EMG25-LG |
Case material |
---|
Polycarbonat |
Weight |
---|
approx. 60g |
Input |
---|
Thermocouples K, J (L), T (U), N, E |
S and B with higher fault |
Range |
---|
> 200 °C* |
Zero point |
---|
-200 °C ... +600 °C* |
Loop voltage |
---|
10...35VDC, reverse protection |
Shorted Sensor |
---|
room ambient temperature |
Vibration |
---|
5g/10-200Hz |
Linearity error |
---|
<0.1% FS* |
TCR |
---|
< 100 ppm/°C |
Permissible ripple |
---|
< 10 % |
Operating temperature range |
---|
-25 °C ... +85 °C |
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 |
Case dimension (HxWxD) |
---|
75 x 25 x 53 mm |
Insulation voltage |
---|
1 kV |