Transmitter LKM282 for thermocouples
The LKM282 is a digital, programmable transmitter with galvanic isolation between input and output for mounting on the standard rail. It can be set 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 0...10V or inverse 10...0V. The temperature compensation takes place in the transmitter itself.
With the increased interference and shock resistance, a wide supply voltage range and the slim design of 6mm, this transmitter is particularly well suited for use in motor vehicles.
It is supplied in a customer-specific configuration. Subsequent changes to the sensor and measuring range can be made via the mini-USB interface on a PC. The required program is available free of charge in the "Downloads" tab.
A zero point controller can be used to make a small correction on site. Additionally, an offset can be set via software.
The selection menu is available for configuration.
When entering your individual measuring range, please note the measuring range of the selected sensor. This can be found in the technical data. The minimum span is 200°C.
| Input: | Thermocouple K, J, L, T, U, E, N, S, B, R, C |
Definition range s.Tab. 2 |
| Zero: | Total measuring range | depending on thermocouple |
| Span: | >50 K | |
| Linearity error: | <0,3K | |
| Measurement error | <0,2% | |
| Cold junction error: | <±0,5°C | |
| Supply voltage: | 8...35 VDC , 8...26 VAC | reverse polarity protected |
| Max. Current consumption: | < 15 mA | at 24 VDC |
| Galvanic isolation | >2.5 kV | |
| Output: | 0...10V / 10...0V | current limited |
| Sensor break: | >10V | Typically 11V |
| Short circuit: | Voltage value for room temperature | |
| Response time: | <0,5s | |
| TC: | <100ppm/K | |
| Operating temperature range: | -40...85°C | |
| Humidity: | <95% | |
| Mounting: | 35mm DIN rail | |
| Material: | Polyester | |
| Dimensions: | 100 x 6 x 93mm | H x W x D |
| Clamping type: | Screw terminals | Tension clamp terminals possible |
| Clamping range: | 0,2...2,5mm² | |
| Weight: | approx. 54g | |
| Vibration: | 147...500Hz /300 ms2/ 500Hz...2K / 200 ms2 | |
| EMC: | EN 61326-1 EN 61326-2-3 |
Emission and noise immunity |
Temperature measuring ranges of thermocouples:
| Type | Min. value in °C |
Max. value in °C |
| B | 300 | 1820 |
| C | 0 | 2315 |
| E | -150 | 950 |
| J | -200 | 1200 |
| K | -200 | 1370 |
| L | -200 | 900 |
| N | -200 | 1300 |
| R | -50 | 1760 |
| S | -50 | 1760 |
| T | -250 | 400 |
| U | -250 | 600 |
Tab.2
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM282 Technical Specification |
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| Operating Instructions – LKM282 Installation and operating manual |
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Software
| Program / Package | Format | Language(s) |
|---|---|---|
| Service Program – LKM282 for Windows-PCs Parameterization Software |
ZIP |  |
| Program – AnalogToTemperatur Conversion of analog output values (mA or V) to temperature |
ZIP | |
| Driver (ftdichip.com) USB driver |
Web | |
Responsible Person in the EU:
LKM electronic GmbH
Elgersburger Straße 1
99331 Geratal
Germany
info@lkmelectronic.de
https://lkmelectronic.de/