Table 2.

Results of ultrasonic output power measurement for equipment’s operating a 1 MHz and 3 MHz.

Nominal power [W]	Equipment 1 MHz		Equipment 3 MHz
	Measured power [W]	U [W]	Measured power [W]	U [W]
3.60	4.22	0.14	2.80	0.19
5.40	6.51	0.19	4.11	0.22
7.20	9.06	0.56	5.36	0.25