Sensors & Transducers

Piezoceramic sensors convert physical forces like pressure or acceleration into electrical signals, while transducers transform electrical signals into mechanical vibrations. They are crucial for applications medical applications such as ultrasound imaging, surgical procedures or patient monitoring.  

Although the terms are often used interchangeably, a transducer is a broader term referring to any device that converts one form of energy into another, with applications ranging from medical ultrasound to power generation and industrial monitoring. Ultrasonic sensor is a category of transducer used for monitoring or measurment such as flow rates, air bubbles, etc.

CeramTec’s piezoceramics enable high-resolution imaging in medical ultrasound by generating and detecting ultrasonic waves. Their high sensitivity and durability enhance diagnostic accuracy.

They are critical for applications that include flow measurement, leak detection, vibration monitoring and bubble detection systems. CeramTec’s solutions deliver precision and reliability across diverse medical uses.

Lead-free piezoceramics, such as those based on BNT-BT, offer a sustainable, biocompatible alternative to traditional materials. They meet environmental and regulatory demands without compromising performance.

Ultrasonic sensors can detect a wide range of materials, including liquids, transparent objects, and soft surfaces, by measuring the time it takes for sound waves to reflect from a target. Unlike optical sensors, they are not affected by colour, transparency, or surface finish, making them ideal for challenging detection environments.

The accuracy and range of ultrasonic sensors depend on factors such as frequency, ambient temperature, humidity, the required medium and environmental conditions like dust or airflow. Higher frequencies offer greater precision but shorter range, while lower frequencies extend range at the cost of detail. Each sensor must be designed and calibrated for its specific application and function to ensure optimal performance.

The main cause of transducer overheating is excessive power input, especially when the device is driven at high voltages or frequencies for extended periods. Poor design or build quality can lead to inefficient power usage, increasing heat generation. To prevent overheating, it's essential to use well-designed transducers optimized for power efficiency, operate within recommended voltage and duty cycle limits, and implement proper thermal management such as heat sinks or active cooling if necessary.