DIN rail transmitter LKM 223 for Pt100 / Pt1000 resistance thermometers with output signal 4...20mA

The LKM 223 is an analog transmitter for Pt100, Pt1000 temperature sensors according to DIN EN 60751. Events for mounting on the 35mm DIN-rail. The temperature dependent resistance signal of the sensors is converted a standard signal of 4...20mA. The output signal is highly accurate temperature linear. The transmitter is delivered from the factory calibrated to customer specifications. A span and zero controller allows subsequent fine adjustment. The influence of lead resistances is largely eliminated by the use of a 3-wire circuit. A larger distance between sensor and transmitter is therefore possible without loss of accuracy. If possible, all three leads should be of the same length and have the same cross-section. The transmitter can also be used in a 2-wire circuit. A correction of the line resistance is then possible with the zero point controller.

* depends on sensor