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 configuration.
Please request individual measuring ranges beforehand using the >>Ask about product<< button.
In the case of analog transmitters, it may occasionally be the case that the desired measuring range cannot be realized. If the individual measuring range is confirmed by us, it can be entered in the >>YOUR COMMENTS<< field at the end of the ordering process.
| 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 |
► Operating instructions in PDF format
► Program for converting analog output values (mA or V) of transmitters to the corresponding temperature