Transmitter LKM203A
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:
Configuration and Selection:
The selection menu is available for standard configuration and can be used for typical settings.
The selection menu is available for standard configuration and can be used for typical settings.
Custom Measurement Ranges:
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.
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 | Measurement range | Accuracy |
|---|---|---|
| Pt100 | -200 – 850 °C | ±0.1 K |
| Pt1000 | -200 – 600 °C | ±0.1 K |
| Feature | Value | Remark |
|---|---|---|
| Loop supply voltage | 10 – 35 VDC | reverse-polarity protected |
| Max. loop current | 30 mA | |
| Zero (4 mA) | -200 – 600 °C | value for 4 mA, sensor dependent |
| Span | > 20 K | Zero + span = 20 mA |
| Sensor wiring | 2- or 3-wire connection | |
| Measuring current | approx. 0.8 mA | |
| Linearity error | < 0.1 % FS | |
| Output | 4 – 20 mA | current loop |
| Short-circuit current | < 4 mA | |
| Sensor break | > 20 mA | |
| Response time | < 0.1 s | |
| Input terminal type | Screw terminals | 0.2 – 1.5 mm² |
| Output terminal type | Screw terminals | 0.2 – 2.5 mm² |
| Operating temperature range | -25 – 85 °C | |
| Temperature coefficient | < 100 ppm/K | |
| Humidity | < 95 % | |
| Weight | 60 g | |
| Protection rating | IP20 | |
| Dimensions | 89.7 × 17.8 × 60.7 mm | H x W x D |
| Material | Polycarbonate | |
| Mounting | DIN rail 35 mm | |
| Vibration | 5 g / 10 – 200 Hz | |
| EMC | EN 61326-1 EN 61326-2-3 |
Emission and 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 |  |
