EMA AE sensor S-15P

S-15 P_small

EMA S-15P acoustic-emission sensor

The EMA S-15P acoustic emission sensor is a mid-frequency, resonance-type, passive vibration detector without built-in preamplifier. It is suitable also for inverse operation with negative voltage impulses. Neodymium magnet is embedded in the base, so it is easy to attach sensor to the ferromagnetic surfaces. The sensor is insulated, so there is no ground loop. The sensing surface is a hard, heat-resistant resin composite.


Diameter: 18 mm
Height: 17.5 mm
Weight (without cable): 23 g
Cable length: 60 cm
Connector type: LEMO FFA.00.250.CTAC18 coaxial, male
Operating temperature range: −35…+110 °C
Typical centre frequency: 150 kHz
Nominal bandwidth: 140 kHz
Typical average sensitivity[1]: 63 dB re 1 V/(m/s)
Capacity to the environment[2]: < 36 pF
Amplitude of test impulse: −1 V…−200 V



  1. Measured between 50kHz and 240kHz, referenced to nominal (140kHz) bandwidth.
  2. Measured between the surface under sensor (e.g. steel container) and the sensor housing.