Transmitter LKM436
Transmitter LKM436 for resistance sensors
The LKM436 is a digital, programmable temperature switch for mounting on the standard rail and can be set for various resistance sensors according to DIN EN 60751. When the switching point is reached, a potential-free change-over contact relay switches. Two LEDs additionally display the operating status and the switching status optically.It can be used in two operating modes:
- Safety shutdown switch - In this case, the self-locking function is activated, and the relay is reset exclusively by switching the "Clear" input to "GND". Optionally, the relay can also be reset with a pushbutton mounted in the cover. The set hysteresis has no influence on the switching behavior.
- Temperature controller - The self-locking function is deactivated. As soon as the set value of the hysteresis is reached, the relay is reset. Resetting with "Clear" against "GND" is not possible.
The lead resistance of the two-wire circuit can be compensated on site with the setting controller. In addition, an offset can be set via software.
The selection menu is available for configuration.
The switching point and the hysteresis can be entered below. Please observe the following notes:
- Switching point, freely selectable in the measuring range of the sensor (see technical data), integers.
- Hysteresis, freely selectable between 0.1°C and 255°C, the switching value must not leave the measuring range
An evaluation from 0 to 4kΩ is possible on request.
An evaluation of thermocouples is possible with our LKM437.
| Switching output: | Relay changer | |
| Max. Switching capacity: | 250VAC; 5A; 1250VA | |
| Supply voltage: | 18...34VDC | |
| Max. Current consumption: | 25mA | |
| Sensor: | Pt100, Pt1000, Ni100, Ni1000 | freely selectable |
| Adjustable switching range: | according to definition range sensor | freely selectable |
| Switching accuracy: | better 0,2°C | |
| Drift of switching point: | 100ppm/°C | |
| Hysteresis: | from 1K | freely selectable |
| Switching cycles mechanical: | 1,5x10 7 | |
| Switching cycles electrical: | 10 5 | |
| Humidity: | <95% | |
| Ambient temperature range: | -40…85°C | |
| Mounting: | 35mm rail | |
| Material: | Polycarbonate | |
| Dimension: | 75x25x53mm | H x W x D |
| Clamping type: | Screw terminals | |
| Clamping range: | 0,2...2,5mm² | |
| Weight: | approx. 60g | |
| EMV: | EN 61326-1 EN 61326-2-3 |
Emission and immunity |
Responsible Person in the EU:
LKM electronic GmbH
Elgersburger Straße 1
99331 Geratal
Germany
info@lkmelectronic.de
https://lkmelectronic.de/
