500KHz high frequency ultrasonic sensor for air gas flow meters
flowrate measurement
Parameters
Centre working frequency (kHz) | 500KHZ±4% |
Bandwidth(hz) | 20kHz |
overall sensitivity 0 dB=3 Vp-p; cycle:8; distance:8cm (transmitter and receiver) | -65dB min |
Beam angle(-3dBfull angle) | 5±1° |
electrostatic capacity | 300PF±20% |
Minimal parallel impedance | 200Ω±30% |
Maxim operating voltage (Pulse Duty cycle ratio 2%) | <500V |
Operating temperature | -20~70℃ |
Protection class | IP65 |
Dimension
Testing curve
7 Precautions
7.1 The ceramic body of the sensor chip is mainly composed of lead
zirconate titanate ceramics. Please ensure that the ceramic body
complies with local environmental regulations when discarded.
7.2 The performance parameters mentioned in the specification refer
to isolated components. Please fully estimate the influence of
other factors when used in the whole circuit.
7.3 Sensor conductor, red is positive electrode, black is negative
electrode. Pin: Long is positive, short is negative.
7.4 If you have any question about this specification, you can
negotiate together.