Transmitter LKM453
Transmitter LKM453 for Pt100/Pt1000 and built-in power supply unit
The LKM453 is an analog measuring transducer for mounting on the standard rail 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 4...20mA. Lead resistances are largely compensated by means of a three-wire circuit. A two-wire circuit can also be implemented.
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.
The built-in power supply can be used independently of the transmitter or can actively supply it.
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 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.
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 | Measurement range in °C |
|---|---|
| Pt100 | -200 – 850 |
| Pt1000 | -200 – 450 |
| TRANSMITTER | ||
| Input | Pt100 / Pt1000 | 2- / 3-wire connection |
| Measuring current | approx. 0.8 mA | depending on sensor resistance |
| Zero | -200 – 600 °C | |
| Span | 20 – 850 K | |
| Linearity error | < 0.1 % FS | |
| Loop supply voltage | 10 – 35 VDC | reverse-polarity protected |
| Output | 4 – 20 mA | current loop |
| Sensor break | > 20 mA | |
| Short circuit | < 4 mA | |
| Response time | < 0.1 s | |
| Operating temperature range | 0 – 60 °C | |
| Temperature coefficient | < 100 ppm/°C | |
| POWER SUPPLY | ||
| Input voltage | 230 VAC | 115 VAC version is possible |
| Frequency | 50 – 60 Hz | |
| Fuse | 100 mA, fast-acting | external |
| Output voltage | 24 VDC | |
| Rated current | 50 mA | |
| Terminal type | Screw terminals | |
| Terminal range | 0.2 – 2.5 mm² | |
| Protection rating | IP20 | |
| Housing material | impact-resistant polyamide | |
| Mounting | EN mounting rails | 35 mm |
| Weight | approx. 100 g | |
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM453 Technical Specification |
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| Operating Instructions – LKM453 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 | |