The North American moisture sensor with the 10 year guarantee
Aquasense 2280D measures the on-line moisture content of fine aggregates such as sand and crushed stone used in concrete. It will also measure many other granular materials. Its microwave technology eliminates all errors associated with resistance and capacitance methods, guaranteeing an accurate reading every time.
Installation, Calibration, Operation
For an overview of all moisture related products, see Moisture Measurement