Transmitter LKM145 for resistance sensors
The LKM145 is a digital, programmable transmitter for mounting in the connection head type J (MA) and can be set for various resistance sensors according to DIN EN 60751. It converts the temperature dependent resistance value of the sensor into a standard signal of 4...20mA or inverse 20...4mA. Due to the complete encapsulation with polyurethane, the components are particularly protected.
The transmitter is supplied configured to customer specifications. Subsequent changes of the sensor and measuring range can be made with our communication interface "LKM S1" with adapter A1 and a PC. The required program is available free of charge in the tab "Downloads".
For a small correction an offset can be set by software.
For configuration the selection menu is available.
When entering your individual measuring range, please note the measuring range of the selected sensor. This can be found in the technical data. The minimum span is 20K.
| Input: | Pt100, Pt1000, Ni100, resistance sensors |
programmierbar, 2-Leiterschaltung | ||
| Possible measuring ranges: |
|
Pt100 | ||
 -200…300°C |
Pt1000 | |||
| -60…250°C | Ni100 | |||
| 0…380, 0…2000 Ω | Widerstände | |||
| Measuring current: | 0,25mA | |||
| Loop voltage: | 10…35 VDC | verpolsicher | ||
| Zero point: | -200…600°C | programmierbar | ||
| Span: | 20…850 K | programmierbar | ||
| Resolution: | 16 Bit | DA-Wandler 14 Bit | ||
| Linearity error: | <0,1% FS | |||
| Output: | 4…20mA | Stromschleife | ||
| Probe break: | >20mA | |||
| Short circuit: | <4mA | |||
| Measurement rate: | 1/s | |||
| TC: | <0,015 K/°C | Messbereich 0…100°C | ||
| Operating temperature range: | -40…85°C | |||
| Humidity: | <95% | |||
| Mounting: | J-head | |||
| Dimension: | 25x14,5 mm | DxH | ||
| Potting compound: | Polyurethane, black | |||
| Clamping type: | Screw terminals | |||
| Clamping range: | 0,13…0,75mm² | |||
| Weight: | approx. 10g | |||
| Vibration: | 5g/10…200Hz | |||
| EMC: | EN 61326-1 EN 61326-1 |
Emission und Störfestigkeit |
► Operating instructions in PDF format
► Software for LKM145/ LKM400
► Program for converting analog output values (mA or V) of transmitters to the corresponding temperature