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Ultrasonic Fluid Level Sensors from APC
Ultrasonic fluid level sensors can be used to monitor fluid levels in a wide variety of commercial and industrial applications. Piezo level sensors work by monitoring the acoustic coupling level between an ultrasonic transmitter and an ultrasonic receiver. When there is liquid between the transmitting transducer and the receiving transducer, acoustic coupling is high. When the fluid level falls and air occupies the signal path, coupling is low and an output signal will be generated to indicate that the fluid level has decreased below the level of the transducers.
Fluid level sensors are keyed to the difference in ultrasound transmission through the liquid being monitored versus ultrasound transmission through air. These piezoelectric sensors can monitor levels of liquids that exhibit a wide range of complexity and viscosity, from water and gasoline to oil and hydraulic fluids.
If have questions regarding fluid level sensors or piezoelectric sensors more generally, please contact a member of our skilled engineering team!
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Let APC Help You Calculate Properties of Piezo Ceramics! Available on APC International's website is an online calculator that can assist you with determining many of the common physical and electrical properties of our piezoelectric ceramics. The APC Piezo Calculator will solve for:
- frequency constant
- resonance frequency
- capacitance
- dielectric constant
- static displacement
- static voltage
If need additional help with your piezo ceramic project or have other questions, contact our technicians today! |
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Low Voltage vs. High Voltage Stack Actuators
APC offers two kinds of stack actuators: high voltage and low voltage.
High voltage stack actuators are designed by co-firing multilayer actuators. High voltage stack actuators are sometimes called "monolithic stacks." There is no adhesive used in the manufacture of a high voltage stack actuator but rather a high temperature sintering process.
Low Voltage stack actuators are designed with composite structures made by stacking separately finished piezoelectric ceramic discs and metal electrode foils. The ceramic discs and foils are joined though the use of an adhesive.
Characteristics of high voltage stack actuators include:
- Large cross sections > 15mm
- Ceramic Layer Thickness: Up to 0.5mm typical
- Max Driving Voltage: 500V - 1000V
- Max Electrical Field: 2kV/mm typical
- Electrical Capacitance/cm3: 100 nFarad
- Shape: Typically rectangular
Characteristics of low voltage stack actuators include:
- Small & medium cross sections
- Ceramic Layer Thickness: < 0.1mm typical
- Max Driving Voltage: Up to 200V
- Max Electrical Field: 2kV/mm typical
- Electrical Capacitance/cm3: 2.5 μFarad
- Shape: Typically cylindrical
If you're interested in learning more about APC's piezoelectric ceramic stack actuators, contact our sales team today! |
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2017 IEEE International Ultrasonics Symposium
When: September 6-9, 2017
Where:
Omni Shoreham Hotel
Washington, D.C. USA
Event Info:
Organized by The American Ceramic Society, the event addresses emerging needs, opportunities and key challenges in the field of electronic materials and applications. Technical presentations highlight advancements in materials and devices for electronics, sensors, energy generation and storage, photovoltaics, and LEDs. The event also features 11 comprehensive symposia, a special tutorial on thin films, and the always-popular session on learning from failure.
The conference appeals to an especially wide range of interest groups and an international
attendance of 1300 or more is anticipated.
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42nd International Conference and Expo on Advanced Ceramics and Composites
When: January 21-26, 2018
Where:
Daytona Beach, Fl USA
Event Info:
ICACC18 showcases cutting-edge research and product developments in advanced ceramics, armor ceramics, solid oxide fuel cells, ceramic coatings, bioceramics, and more. The technical program and Industry Expo provides an open forum for scientists, researchers, engineers, and industry leaders from around the world to present and exchange findings on recent advances in ceramic science and technology.
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