Main technical parameters：
◇Ultrasonic Doppler sensor1
◇Material：Metal
◇Measure range：1 meter
◇Centre resonant frequency：500kHz±1kHz
◇Static electric capacity：1200P±100P
◇resonance impedance：280Ω±20Ω 
◇frequency band width（-3dB）：Δf-3dB≥2kHz
◇operation voltage：30~60Vp-p Limiting voltage：≤80Vp-p
 ◇Launching beam angle：15°
◇Operation Temp：-40~+80℃
 ◇Blind Area：0.1m
◇Protection level：IP68
Mainly applicated in physical measurement under every industrial environment  measurement areas with small wave beam angle