What Are the Parameters of Ultrasonic Transducers?
The ultrasonic transducer is a kind of energy conversion device. Its function is to convert the input electric power into mechanical power (ultrasound) and then transmit it out, and it consumes a small part of the power by itself. Therefore, the most important issue to consider when using an ultrasonic transducer is the matching with the input and output ends, followed by mechanical installation and matching dimensions. There are many types of ultrasonic machines on the market, and customers must provide accurate and reliable indicators to ensure that the ultrasonic transducer products provided by the company can be well-matched with your company's ultrasonic machines and achieve the best performance. Due to the wide variety of ultrasonic transducers, BBT medical will introduce some ultrasonic transducer parameters.
Ⅰ. Resonant frequency of the ultrasonic transducer
The frequency refers to the frequency measured by the transmission line method with a frequency generator, millivoltmeter, or the frequency measured with an impedance characteristic analyzer or similar instruments. Generally, it is also known as small-signal frequency. The opposite of it is the machine frequency, that is, the actual operating frequency measured when the customer connects the transducer to the drive power supply through a cable and is powered on when there is no load or load. Because the matching circuits of customers are different, the frequency of the same medical ultrasonic transducer with different driving power is different, and such frequency cannot be used as the basis for ordering.
Ⅱ. Ultrasonic transducer capacitance
That is, the free capacitance of the transducer can generally be measured at the frequency of a capacitor bridge, or an impedance characteristic analyzer similar to the instrument. No matter how simple it is, the measurement with a general portable capacitance meter can also meet the requirements.
Ⅲ. The working mode of the ultrasonic transducer
Due to different processing methods and requirements, the working model of the transducer can be roughly divided into continuous working and pulse working. Different working methods have different requirements for the transducer. Generally speaking, continuous work has almost no pause time, but the working current is not very large, and the pulse work is intermittent, with pauses, but the instantaneous current is very large. On average, the power in both states is large. Contact us for ultrasonic transducer working principle info!
Ⅳ. Ultrasonic transducer form and maximum power
Manufacturers may have different regulations for the nominal power of machines for different purposes and purposes. In other words, the nominal power of the same transducer used on different machines may be different. To avoid ambiguity, the customer should specify the structure of the transducer in detail.
Ⅴ. Ultrasonic transducer installation and matching size
It mainly includes ultrasonic horn material, surface treatment method, and shape. The ultrasonic transducer is connected to the ultrasonic horn with threads, the ultrasonic horn is connected with the ultrasonic mold, and the diameter, thickness, number, and position of notches or screw holes at the flange of the ultrasonic horn.