Having a marine transducer can be a huge help when your boating in unfamiliar waters, but many sailors, fishermen and other marine professionals don't actually know how these devices work. Before you purchase any marine equipment, it's a good idea to learn the basic function of the device and how it can make your life easier, so that you make a more informed decision about which transducer is right for you.
Inside each transducer is a small object called a piezoceramic disc, also referred to as an element. The boat will apply electric voltage to the element, causing it to vibrate at a particular frequency. Those vibrations create sound pressure waves, which are sent through the water in a cone-shaped beacon. As the waves travel through the ocean, they'll hit objects such as a fish or a rock on the bottom of the ocean and either reflect back to the boat or be scattered off into the water.
The sound waves that get back to the boat can cause small distortions in the shape of the element, thus affecting the voltage that is being applied to it. The transducer can interpret these voltages to determine the shape and size of the objects that the sound waves hit when they were reflected back to the hull of the ship. Your transducer judges depths by calculating the amount of time it took for the sound waves to leave and return back to the boat.
While there is a great variety of transducers available from companies such as Raymarine, Garmin and Furuno, at a basic level this is how they all operate. To find out more about the capabilities that a transducer provides its user, check out ePal's inventory today!