IP68 water meter flow meter 2Mhz underwater ultrasonic transducer 

Centre working frequency (kHz)：2MHZ±4%
Bandwidth：10%
overall sensitivity 0 dB=3 Vp-p; cycle:8; distance:8cm (transmitter and receiver)：-25dB min
Beam angle(-3dBfull angle)：3°
electrostatic capacity：2300PF±20%
Minimal parallel impedance：150Ω±30%
Maxim operating voltage (Pulse  Duty cycle ratio  2%)：<200V
Operating temperature：4~95℃
Maxim pressure：1.6MPa
The material of the housing：PPS
Protection class：IP68

Applications 
It is widely used for ultrasonic water meters, flow meters and heat meters