Transmitter LKM231
Transmitter LKM231 for thermocouples
The LKM231 is an analog transmitter with galvanic isolation between input and output for mounting on the standard rail. It can be designed for different thermocouples according to DIN EN 60584 and DIN 43710. It converts the temperature-dependent thermoelectric voltage of the sensor into a standard signal of 4...20mA. The temperature compensation takes place in the transmitter itself.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.
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.
| Thermocouple | Measurement range in °C |
|---|---|
| Type B* | 0 – 1820 |
| Type E | -270 – 1000 |
| Type J | -210 – 1200 |
| Type K | -270 – 1372 |
| Type L | -200 – 900 |
| Type N | -270 – 1340 |
| Type S* | -50 – 1767 |
| Type T | -270 – 400 |
| Type U | -50 – 600 |
| * with higher linearity error | |
| Feature | Value | Remark |
|---|---|---|
| Zero | >-200 – 600 °C | depending on thermocouple |
| Span | > 200 K | depending on thermocouple |
| Linearity error | < 1 % FS | depending on thermocouple |
| Reference-junction error | <±0.5 °C | |
| Loop supply voltage | 10 – 35 VDC, reverse-polarity protected | If powered from auxiliary supply, auxiliary values apply |
| Auxiliary voltage | 24 VDC ±10% | reverse-polarity protected |
| Max. current consumption | 40 mA | |
| Output | 4 – 20 mA | current loop |
| Test voltage | 1 kV | |
| Sensor break | > 20 mA | |
| Sensor short-circuit | current value corresponding to room temperature | |
| Response time | < 0.1 s | |
| Temperature coefficient | < 100 ppm/°C | |
| Operating temperature range | -25 – 85 °C | |
| Humidity | < 95 % | |
| Mounting | 35 mm rail | |
| Material | Polycarbonate | |
| Dimensions | 75 × 25 × 53 mm | H x W x D |
| Terminal type | Screw terminals | |
| Terminal cross-section | 0.2 – 2.5 mm² | |
| Weight | approx. 60 g | |
| Vibration | 5 g / 10 – 200 Hz | |
| EMC | EN 61326-1 EN 61326-2-3 |
Emission and immunity |
Dokumente
| Dokument | Format | Sprache(n) |
|---|---|---|
| Datenblatt – LKM231 Technische Spezifikation |
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| Bedienhinweise – LKM231 Installations- und Bedienungsanleitung |
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Software
| Programm / Paket | Format | Sprache(n) |
|---|---|---|
| Programm – AnalogToTemperatur Umrechnung analoger Ausgangswerte (mA oder V) in Temperatur |
ZIP | |
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM212 Technical Specification |
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| Operating Instructions – LKM212 Installation and operating manual |
|
Software
| Program / Package | Format | Language(s) |
|---|---|---|
| Program – AnalogToTemperatur Conversion of analog output values (mA or V) to temperature |
ZIP | |