Transmitter LKM408 for Pt100/Pt1000
The LKM408 is an analog transmitter and can be designed for the Pt100 or Pt1000 measuring resistor according to DIN EN 60751. Its design is ideally suited for mounting in tubular housings. It converts the temperature-dependent resistance value of the sensor into a standard signal of 0...10V. The lead resistance of the two-wire circuit can be compensated on site with the adjustment controller.
The transmitter is supplied calibrated to customer specifications. Optionally, it can be supplied with the Hirschmann plug type GSP as well as without plug. With this arrangement, customer-specific probes with integrated transmitter, such as our Type408, can be realized. By means of span and zero controllers, a subsequent fine adjustment can be carried out on site.
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 20K. 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.
| Resistance thermometer | Specified range in °C |
|---|---|
| Pt100 | -200 – 850 |
| Pt1000 | -200 – 450 |
| Parameter | Value | Remark |
|---|---|---|
| Input | Pt100 / Pt1000 | 2-wire configuration |
| Measuring current | approx. 0.8 mA | |
| Zero point | -200 – 500 °C | value for 0 V |
| Span | 20 – 850 K | zero point + span = 10 V |
| Linearity error | < 1 % FS | depending on span and zero point |
| Accuracy | approx. 0.3K (with a span of 100 K) approx. 0.7K (with a span of 200 K) |
|
| Supply voltage | 15 – 35 VDC, 15 – 26 VAC | reverse polarity protected |
| Max. current consumption | 10 mA | |
| Output | 0 – 10 V | |
| Sensor break | > 10 V | |
| Sensor short circuit | = 0 V | |
| Response time | < 0.1 s | |
| TK | < 100 ppm/°C | |
| Operating temperature range | -40 – 85 °C | |
| Humidity | < 95 % | relative humidity |
| Connection | Hirschmann connector type GSP | Pin 1 (+24 V), Pin 2 (- GND), Pin 3 (0 – 10 V) |
| Sensor connection | exposed solder contacts | |
| Optional potting compound | black polyurethane | |
| PCB dimensions | 26 x 15.5 x 12,5 mm | L x W x H |
| PCB deviation from plumb | 5 ° | |
| Weight | approx. 10 g (unpotted) | |
| EMC | EN 61326-1 EN 61326-2-3 |
emission and immunity |
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM408 Technical Specification |
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| Operating Instructions – LKM408 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 | |