Stocking The Source - Siemens Q-MED User Manual

Simcenter Qsources Low Frequency Monopole Source 2v9C.docx 12
Internal source strength sensor
The sensor output voltage is proportional to the source volume displacement in the frequency range between 10
and 1 000 Hz. The sensor provides a stable signal, but the voltage level is in millivolts only. The sensor works in
voltage mode, not IEPE, nor charge, nor Wheatstone bridge. There is no supply needed.
The actual sensitivity value of each signal is given on the "sensitivity sheet", included separately in the delivery. The
acoustic center is in the middle on the centerline of the device.
The reference signal can be directly connected to the Simcenter SCADAS frontend. The channel mode of the sensor
/
is Voltage AC, not IEPE. The unit of a common acoustic FRF is . You cannot measure this directly with this
excitation device. The sensitivity value provided on the sensitivity sheet is in . If an acoustic FRF is measured
/
for example, the unit will be . Double integration of the FRF will result in .

Stocking the source

The device is to be stored and transported using the original flight case. Make sure the flight case is free of debris.
Be careful with small metal debris as it is attracted by the powerful magnets and may infiltrate the source. Use a
plastic bag for storage. Keep the original packing material which should be used for shipment.