Indoor temperature/humidity probe LKM445
LKM445 Temperature and humidity probe with 4...20mA output
The LKM445 is a room temperature/humidity probe with integrated transmitter and two current outputs 4...20mA. It can be used to measure temperature and humidity values in buildings, plants and control cabinets. It is suitable for direct connection to evaluation devices with current input such as PC cards or PLCs. The sensor is supplied fully calibrated. Minor corrections can be made on site by means of two controllers.
The cable outlet is located on the rear panel, a side cable outlet is optionally available.
Please request individual measuring ranges beforehand using the >>Ask about product<< button.
| Input: | Semiconductor sensor | integrated |
| Measuring range temperature: | 0...50°C | programmable -20...80°C |
| Measuring range humidity: | 0...100% | guaranteed values 5...95% |
| Loop voltage: | 10...35VDC | |
| Output: | 2x 4...20mA | |
| Load: | max. 700 at 24V | |
| Measuring error temperature: | typ. 0,5°C | at 25°C |
| Measuring error Humidity: | <2% | |
| Operating temperature range: | -20...80°C | |
| Humidity: | <95% | |
| Clamping type: | Screw terminals | |
| Clamping range: | 0,13...1,5mm² | |
| Dimensions: | 70x70x25mm | W x D x H |
| Weight: | approx. 50g | |
| Housing: | PVC white | |
| Degree of protection: | IP20 | |
| EMC: | EN 61326-1 EN 61326-2-3 |
Emission and noise immunity |
► Data sheet in PDF format 
► Operating instructions im PDF-Format
► Program for converting analog output values (mA or V) from transmitters to the corresponding temperature
► Operating instructions im PDF-Format
► Program for converting analog output values (mA or V) from transmitters to the corresponding temperature