Ultrasonic transducers

Standard product

• High sensitivity
• Low driving voltage
• Internally amplified
• ¼ MHz operating frequency
• Simple assembly on printed board
• Shielding and EDS protection
• Short blind distance
 

The UZ250 sensor is a piezoelectric ultrasonic pick-up.

The sensor is designed for pulse radiation in frequency band of 250 kHz. The pick-up consists of a piezoelectric element connected to small printed board with internal electronics. EMC (including EDS protection) is achieved by shielding

The main part of the sensor is an ultrasonic transducer. The ultrasonic transducer consists of a dumped piezoelectric element and tuned resonance plate. The piezoelectric element is connected to an electronic circuit that consists of a matching circuit of the transmitter and a preamplifier. This amplifier transforms small amplitude high impedance input voltage of reflected signal to low impedance modulated output voltage.
 

UZ250 design

Sensor schematics

Parameter	Unit	Min	Typ.	Max	Remark
Nominal frequency	kHz		250
Frequency range	kHz		50
Nominal sensitivity	mV/V		3		Flat target 100 mm Driving: 5 pulses, 9 V, 2us/2us
Mass