PREMOSYS - Progressive Electronic Mechatronic Optoelectronic Systems

Microphonic Speed Detection Module PR0034

The module serves for the rotation speed detection of a rotating disk via a capacitor microphone. The perceivable rotational speed lies in the range from 10000 to 60000 U/min. With each rotation, an air impulse streams through an air tube to the microphone. The microphone generates an analog voltage depending on the rotation speed of the disk as well as on the air pressure.

The module PR0034 converts the microphone signal to a current output (4 to 20mA).

The module can be adapted to customer defined specifications.

Technical Data:

  • Microphone input level 2Vss <= Uin <= 10Vss
  • Pulse time control output 600 µs ± 10%
  • Control output 24V/20mAeff, PNP Active High, not potential free
  • Control input „Disable" 24V/10mA, Active High, not potential free
  • Current output 4mA to 20mA
  • Least detectable rotational speed ~5U/min
  • Time delay current output regarding period time of input signal, min. 1ms, max. 12s
  • Control output 1,44V ± 10% pro 10000 U/Min
  • Internal fuse, 0,17A, self resetting
  • Status display Pulse-Output with LED,
  • Power supply with LED, Disable-Input with LED

Available variants:

PR0034 Output 4-20mA

Application range:

  • Rotation speed measurement of varnishing turbine via microphone