█ SCOPE
This specification includes 40A14TR-1 ultrasonic sensor size, characteristics, performance parameters and precautions, before using this product, please read this specification. 40A14TR-1 has the functions of transmitter and receiver. It generally can be used for ultrasonic range finder, ultrasonic sensor for non-contact detect objects, ultrasonic distance sensor, ultrasonic automation control, ultrasonic liquid level sensor, etc. If you have any questions for other applications, please contact us for details.
█ OUTLINE DIMENSION
█ CHARACTERISTICS
Part Number | 40A14TR-1 |
Construction | Water Proof Type |
Using Method | Transmitter and Receiver |
Nominal Frequency | 40.0±1.0KHz |
Sound Pressure | 105dB min |
Sensitivity | -74dB min. |
Capacitance | 1900Pf±20% |
Max. Input Voltage | 120Vp-p |
Directivity | 80°±15°(-6dB) |
Distance of Detection | 0.2～3m |
Resolution | 10mm |
Operating Temperature | -40℃～+80℃ |
Storage Temperature | -40℃～+85℃ |
Material of Cover | Aluminum Alloy |
█ PRINCIPLE OF ULTRASONIC SENSOR
Piezoelectric ultrasonic generators actually work with the resonance of a piezoelectric crystal. The internal structure of the ultrasonic generator has two piezoelectric wafers and a resonant plate. When a pulse signal is applied to its two poles, the frequency of which is equal to the natural oscillation frequency of the piezoelectric wafer, the piezoelectric wafer will resonate and drive the resonance plate to vibrate, thereby generating ultrasonic waves. On the other hand, if no voltage is applied between the two electrodes, when the resonator plate receives the ultrasonic wave, the piezoelectric wafer is pressed to vibrate, and the mechanical energy is converted into an electrical signal, at which time it becomes an ultrasonic receiver.