Introduction:

The Air Ultrasonic Transducer can detect objects or measure distance, making use of transmitting ultrasonic acoustic waves in the air and receiving the reflected wave. Ultrasonic waves can reflect from transparent objects also, making it possible to to sense an object invisible to optical sensors. With this phenomena, the technology can be used in such fields as measuring liquid surfaces or gaseous currents. Fuji & Co. is active in developing the most effective and highly sensitive sensors.

We can entertain special customer requests on shapes, frequency based on customer specifications.

Applications:

There are three basic systems which can be employed in ultrasonic sensors.

	Single element reflection system.
	Two element reflection system.
	Two elements and facing system

The FUS series can apply to any of these.

There are two kinds of signal wave forms.

	Continuous wave systems: Useful for object detection.
	Pulsed wave systems: Useful for distance measurement and gaseous current meters using analysis of arrival time of reflected wave. also in remote control system where pulse recurrence rate is modulated.

Fuji & Co. recommends two element reflection system for short distance measurement because single element cannot receive reflected signal if it is still transmitting when reflected signal returns.

Construction - Dimensions:

Model	FUS - 120A	FUS - 200A	FUS - 300A	FUS = 400A
Nominal Frequency	120 kHz.	200 kHz.	300 kHz.	400 kHz.
Dimensions
Construction