LKM204 - Measuring Transducer for RTDs
The LKM204 is designed for RTDs in various industrial applications and has been specially developed for resistance thermometers. It converts the temperature-dependent resistance value of the sensor into a standard signal of 0...10V. Lead resistances are largely compensated for by the three-wire circuit, although a two-wire circuit is also possible. The sensor, measuring range and optional offset can be adjusted via the USB-C interface on a Windows PC. The software is available as a free download.
The QR code on the front of the transmitter links to this website, allowing you easy access to the documents and software at a later date.
Order options:
1. standard configuration:- No adjustments necessary in the selection menu.
- Delivery: The transmitter is supplied with the following configuration: Input: Pt100 (3-wire circuit), measuring range: 0...100°C, output: 0...10V
- Adaptation: Select your desired sensor and measuring range. Make sure that the selected measuring range is within the technical specifications of the sensor. The range is a minimum of 20K and a maximum of 850K.
- Delivery: The transmitter is supplied ready for installation.
Accessories for your LKM204:
Matching cable sensors: For the operation of your LKM204, we offer high-quality cable probes for RTDs that ensure precise and reliable temperature measurements. Upon request, these can be customized to meet your specific requirements.| Input | Operating range | Accuracy |
|---|---|---|
| Pt100 | -200...850°C | ±0,1K |
| Pt1000 | -200...300°C | ±0,1K |
| Ni100 TK6180 | -60…250°C | ±0,1K |
| Ni1000 TK6180 | -60…170°C | ±0,1K |
| Ni100 TK5000 | -50…250°C | ±0,1K |
| Ni1000 TK5000 | -50…200°C | ±0,1K |
| Resistance | 0...2000Ω | ±0,05Ω |
| Max. current consumption: | 23mA | at 24V DC |
| Zero point: | corresponds to the selected sensor | programmable |
| Span: | 20...850K | programmable |
| Sensor wiring: | 2- or 3-wire circuit | |
| Measuring current: | 0,25mA | |
| Resolution: | 16 bit input | 14 bit output |
| Linearity error: | <0,1% FS | |
| Output: | 0...10V or individually in the range 0...V |
|
| Short circuit: | 0V | |
| Sensor break: | approx. 11V * | |
| Measurement rate: | 1/s | |
| Terminal type Input: | Screw terminals | 0,2…1,5mm² |
| Terminal type Output: | Screw terminals | 0,2…2,5mm² |
| Installation: | 35mm standard rail | |
| Operating temperature range: | -40…85°C | |
| Temperature coefficient: | <25ppm/K | |
| Humidity: | <95% | |
| Weight: | 60g | |
| Protection class: | IP20 | |
| Dimensions: | 89,7 x 17,8 x 60,7mm | H x W x D |
| Material: | polycarbonate | |
| Vibration: | 5g/10…200Hz | |
| EMV: | EN 61326-1 EN 61326-2-3 |
Emission and immunity |
* The following applies to all individually set output voltages: The maximum output voltage when the measuring range is exceeded or the sensor breaks is calculated as (Vmax - Vmin) × 0.1 + Vmax.
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM204 Technical Specification |
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| Operating Instructions – LKM204 Installation and operating manual |
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Software
| Program / Package | Format | Language(s) |
|---|---|---|
| Service program for Windows PCs Parameterization software |
EXE | |
| 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/
