The type of ScreedSensor you need depends on the screed thickness you want to use. Place the sensor 30-50% down in the screed for the best moisture measurements.
If you use a 40 mm thick screed, use the 20-sensor. For a 50 mm thick screed, use the 35-sensor.
Remember to register the final screed depth. If the screed depth is different than you planned, our algorithms compensate for the deviations for the highest accuracy.