Optical sensor

Very reliable and accurate, infrared emitter and receiver is able to scan at very high rate (16 scans per millisecond). A detected product that falls between minimum and maximum Dark Time is considered a good product and counted. Sensors can detect and count two tablets falling closely together but not completely overlapped.

E.F.S. (Electrostatic field sensor)

Suitable for dusty products, E.F.S. is a unique sensor control able to discriminate between referenced good product and broken tablets, empty or half empty capsules. The mass of the tablet is given by a reference curve. E.F.S. is a dust resistant sensor. The system is suitable to handle both capsules and tablets and it is dust immune.

The table below indicates the detection capabilities of the optical and E.F.S. sensors for different tablet/capsule damage and scenarios. If they are not detected then they will be counted as a good product, if they are detected then the machine will reject the bottle containing that product.
	Half tablet or capsule	Capped tablet	Tablet chip	Double tablet	Double tablet	Part of tablet	Empty capsule	Half empty capsule
OPTICAL SENSOR	NO	NO	NO	YES (count as double)	NO	NO	NO	NO
E.F.S. (ELECTROSTATIC FIELD SENSOR)	YES	YES	YES	YES (Count as double)	YES (Count as double)	NO	YES	YES
Tests with active product are needed in order to confirm definitive results.

Camera

Counting machines can be equipped with Camera Vision System to detect cross contamination (products with different colours).