Explosion-proof cardio microphone sensor

The Ex cardio microphone sensor accurately converts heart sounds (mechanical vibrations) into electrical signals using an electret (condenser) microphone device. Suitable for recording heart sounds in the frequency range of 10 to 500 Hz and useful in fields such as phonocardiography and ballistocardiography.

To use the Ex cardio microphone sensor, connect it to the USB port or USB hub of a Windows laptop or desktop computer.

The Ex cardio microphone sensor is connected through an industrial USB 2.0 connector to an the intrinsically safe barrier Ex USB 2.0.

A green LED on the connector housing indicates the transducer is receiving power and is ready for use

The Ex cardio microphone sensor has a “hot-plug” function which allows it to be connected and disconnected without stopping, shutting down or rebooting the system.

To record, attach the cardio microphone firmly to the chest with adhesive tape. Then move the microphone to different positions until the best signal is obtained.

Specifications:

Operating frequency: 10 to 500 Hz 

Dynamic range: 0.01 to 10 m/s2 

Variation in frequency response: ±3 % 

Resonant frequency: 3.4 kHz 

Amplitude nonlinearity at 10 Hz: ±3 % 

Cable length: 2m 

Electrical Data:

Uo=5 V

Io=50 mА

Ui=5 V

Ii=50 mА

Ci=10 µF

Ex marking:

Ex ib IIC T6...T4 Gb X

Ex tb IIIC T85°C...135°C Db X

Produced in accordance with IEC 60079-0, IEC 60079-11, IEC 60079-31

Temperature: 15 °C to 45 °C 

The scope of delivery implies:

Explosion-proof cardio microphone sensor