Transmitter LKM424 for Pt100/Pt1000
The LKM424 is an analog transmitter for mounting in the connection head type B and can be designed for the Pt100 or Pt1000 measuring resistor according to DIN EN 60751. It converts the temperature-dependent resistance value of the sensor into a standard signal of 0...10V. Lead resistances are largely compensated by means of a three-wire circuit. A two-wire circuit can also be implemented. The components are particularly protected by complete encapsulation with polyurethane.
The transmitter is supplied calibrated to customer specifications. By means of span and zero controllers, a subsequent fine adjustment can be carried out on site.
Our tip: This transmitter is especially suitable for smaller measuring ranges, for larger measuring ranges we recommend our LKM104.
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 50K. 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.
| RTD element | Specification range in °C |
|---|---|
| Pt100 | -200 – 850 |
| Pt1000 | -200 – 450 |
| Feature | Value | Remark |
|---|---|---|
| Input | Pt100 / Pt1000 | 2-/3-wire connection |
| Measuring current | max. 1 mA | depends on sensor resistance |
| Zero point | -200 – 600 °C | |
| Span | 50 – 850 K | |
| Linearity error | < 1 % FS | at 600 °C span; smaller for smaller spans (e.g. 0 – 100 °C ≈ 0.3 %) |
| Supply voltage | 15 – 35 V DC, 15 – 26 V AC | reverse polarity protected |
| Max. current consumption | 10 mA | |
| Output | 0 – 10 V | |
| Probe break | > 10 V | |
| Probe short circuit | = 0 V | |
| Response time | < 0.1 s | |
| Temperature coefficient (TC) | < 100 ppm / °C | |
| Operating temperature range | -40 – 85 °C | |
| Humidity | <95 % rel. humidity | |
| Mounting | B-head | |
| Dimensions | 44 × 26.5 mm | D × H |
| Potting compound | Polyurethane, black | |
| Connection type | Screw terminals | |
| Clamping range | 0.13 – 1.5 mm2 | |
| Weight | approx. 30 g | |
| Vibration | 5 g / 10 – 200 Hz | |
| EMC | EN 61326-1 EN 61326-2-3 |
Emission and immunity |
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM424 Technical specification |
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| Operating Instructions – LKM424 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/
