Soil Moisture Logger X168577 red and yellow)

red and yellow)

These pattern cards and beads help to develop logical thought to re-create complex patterns

Provides sequencing

1040 x 1160 x 610mm (h x w x d)

Great value temperature display measures

Soil Moisture Logger X168577 red and yellow)This Edu Logger sensor is based on measuring the vacuum pressure in a tensiometer. A tensiometer is a closed tube with a special ceramic part in its end. The tensiometer is filled with water and put in the soil. If the soil is dry, water goes out by diffusion through the ceramic holes and vacuum pressure is created in the tensiometer. If the soil is wet, the vacuum in the tensiometer pulls water into the tensiometer and the vacuum decreases. This is