LKM203A - Transmitter for Pt100/Pt1000
The LKM203A is an analog transmitter designed for mounting on a standard rail and can be configured for Pt100 or Pt1000 resistance thermometers according to DIN EN 60751. It converts the temperature-dependent resistance value of the sensor into a standard 4…20mA signal. Lead resistances are largely compensated for using a three-wire circuit. A two-wire circuit can also be implemented.
The transmitter is delivered pre-calibrated to customer specifications. Fine adjustments can be made on-site using the span and zero-point adjusters.
The QR code on the front of the transmitter links to this website, providing easy access to documentation even at a later date.
Ordering options:
The selection menu is available for standard configuration and can be used for typical settings.
These can be specified directly in the optional comment field below the selection menu.
Important Conditions: Please ensure that the measurement range falls within the specification limits of the respective sensor and has a minimum span of 200K. This guarantees that the desired range is technically feasible.
Our team will review your order for feasibility. If any issues arise, we will contact you to find a suitable solution.
Accessories for your LKM203A:
Matching cable sensors: For the operation of your LKM203A, we offer high-quality cable probes for resistance thermometers that ensure precise and reliable temperature measurements. Upon request, these can be customized to meet your specific requirements.| Input | Specification limit | Accuracy |
|---|---|---|
| Pt100 | -200...850°C | ±0,1K |
| Pt1000 | -200...600°C | ±0,1K |
| Loop voltage: | 10...35VDC | reverse polarity protected |
| Max. loop current: | 30mA | |
| Zero point: | -200…600°C | Value for 4mA, sensor-dependent |
| Span: | >20K | zero+span=20mA |
| Sensor wiring: | 2- or 3-wire circuit | |
| Measuring current: | approx. 0.8mA | |
| Linearity error: | <0,1% FS | |
| Output: | 4...20mA | Current loop |
| Short circuit: | <4mA | |
| Sensor break: | >20mA | |
| Response time: | <0,1s | |
| Terminal type input: | Screw terminals | 0,2…1,5mm² |
| Terminal type output: | Screw terminals | 0,2…2,5mm² |
| Operating temperature range: | -25…85°C | |
| Temperature coefficient: | <100ppm/K | |
| Humidity: | <95% | |
| Weight: | 60g | |
| Protection class: | IP20 | |
| Dimensions: | 89,7 x 17,8 x 60,7mm | H x W x D |
| Material: | Polycarbonate | |
| Mounting: | DIN standard rail 35mm | |
| Vibration: | 5g/10…200Hz | |
| EMV: | EN 61326-1 EN 61326-2-3 |
Emission and interference immunity |
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM203A Technical Specification |
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| Operating Instructions – LKM203A Installation and operating manual |
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Software
| Program / Package | Format | Language(s) |
|---|---|---|
| Program – AnalogToTemperatur Conversion of analog output values (mA or V) to temperature |
ZIP |  |
Responsible Person in the EU:
LKM electronic GmbH
Elgersburger Straße 1
99331 Geratal
Germany
info@lkmelectronic.de
https://lkmelectronic.de/
