Mettler Electronics Corp.— Rev.J_09/13/17
52
programmed by the membrane panel control. In the
pulse mode the 1, 3.2 or 3.3 MHz sine wave pulses
are modulated. The power level is adjusted by varying
the pulse amplitude. The pulse waveforms are shown
below:
2 ms 8 ms 2 ms
Time
Output
1, 3.2 or 3.3 MHz
Pulse Space = 10 ms
Figure 9.1—Pulse Waveform—20% Duty Cycle
In the continuous mode, the power is on at least 95% of
the time the timer is running. The continuous mode
waveform is shown below:
Time
Output
1, 3.2 or 3.3 MHz
Figure 9.2—Continuous Waveform
9.3 Ultrasonic Applicator Specifications:
Piezoelectric discs: The output transducer utilizes a barium titanate disc
with a specially coated face.
Individual Applicator Specifications:
Applicator Part Number Frequency Effective Radiating Area
ME 7513 1 or 3.2 MHz ±10% 5 cm² ±20%
7310* 1 MHz ±10% 10 cm²±20%
7331* 3.3 MHz ±10% 1 cm² ±20%
The Sonicator Plus 930 must be specially calibrated to use these applicators so that they function
properly.
Maximum Beam
Non–Uniformity Ratio: 6:1