Transmitter LKM428 for Pt100/Pt1000
The LKM428 is an analog transmitter for mounting in an IP64 housing 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 components are specially protected by dip coating.
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 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 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.
| Measuring resistor | Specification limit in °C | ||
| Pt100 | -200 | ... | 850 |
| Pt1000 | -200 | ... | 450 |
| Input: | Pt100 / Pt1000 | 2-/3-wire circuit |
| Measuring current: | approx. 0.8mA | |
| Zero: | -200…600°C | |
| Span: | 20…850K | |
| Linearity error: | <0.1% FS | |
| Loop voltage: | 10...35VDC | reverse polarity protected |
| Output: | 4...20mA | current loop |
| Probe break: | >20mA | |
| Probe short circuit: | <4mA | |
| Response time: | <0,1s | |
| TC: | <100ppm/°C | |
| Operating temperature range: | -40…85°C | under mentioned installation conditions |
| Humidity: | <95% rel. humidity | |
| Mounting: | Housing similar to PK101(Bopla) | |
| Dimension: | 47mm x 41mm | |
| Clamping type: | Screw terminals | |
| Clamping range: | 0,13...1,5mm² | |
| Weight: | approx. 20g | |
| EMC: | EN 61326-1 EN 61326-2-3 |
Emission and noise immunity |
Documents
| Document | Format | Language(s) |
|---|---|---|
| Datasheet – LKM428 Technical Specification |
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| Operating Instructions – LKM428 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/
