Transducer

Transducers
One-stop source for process measurement & control. Free quote online.
Omegamation.com

Sensor - Transducer Sales
Sensors for Resale - Resellers Guaranteed Quality - No Contracts.
www.TransducersDirect.com

Ultrasonic Transducers for Bolting
Our specialty is ultrasonic bolt elongation measurement. We offer Ultrasonic Transducers for use on bolts with dia. from 1/4" (6mm) and larger; compatible with all UT bolting instruments.
ibt-usa.com

Diagnostic Ultrasound Transducers
Leading provider of Ultrasound Transducers / all OEMs. (888) 768-6310.
www.prioritymedical.com

Find Ultrasonic Transducers Online
NDT Systems, Inc. has been a pioneer in the development of truly portable ultrasonic test equipment. Our collections include imaging systems, transducers, flaw detectors and more.
www.ndtsystems.com

Ultrasonic Sensors - Many Applications
ToughSonic sensors - reliable, easy installation, great tech support.
www.ultrasonicsensors.com

Ultrasonic
Find ultrasonic Search In Your Local Area Now.
Justclicklocal.com

Home Ultrasound Unit $99
Relieve Pain, Speed Healing At Home 100% Guaranteed & Dr. Recommended.
www.UltrasoundCure.com

Stedham Electronics Sensors
Sensors for liquid level control, packaging, proximity, automation.
www.stedham.com

National Ultrasound - Ultrasound Sale
Ultrasound sales, service & support Acuson Cypress, Sonosite, GE LogiqBook, Biosound and more. Buy direct and save on quality refurbished Ultrasound systems.
www.nationalultrasound.com

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A transducer is a device, usually electricity, electronics, electro-mechanical, electromagnetic, photonic, or photovoltaic that converts one type of energy to another for various purposes including measurement or information transfer (for example, pressure sensors). In a broader sense (for example in the Viable System Model) a transducer is sometimes defined as any device that converts a signal from one form to another. A very common device is an audio speaker, which converts electrical voltage variations representing music or speech, to mechanical cone vibration. The speaker cone in turn vibrates air molecules creating acoustical energy.

Types of transducers This list is confined to the narrower definition of the term.

Electromagnetic:

Antenna (radio) - converts electromagnetic waves into electric current and vice versa.
Cathode ray tube (CRT) - converts electrical signals into visual form
Fluorescent lamp, light bulb - converts electrical power into visible light
Magnetic cartridge - converts motion into electrical form
Photocell or light-dependent resistor (LDR) - converts changes in light levels into resistance changes
Tape head - converts changing magnetic fields into electrical form
Hall effect sensor - converts a magnetic field level into electrical form

Electrochemical:

pH meter
Electro-galvanic fuel cell

Electromechanical (electromechanical output devices are generically called actuators):

Electroactive polymers
Galvanometer
MEMS
Electric motor, linear motor
Vibration powered generator
Potentiometer when used for measuring position
Load cell converts force to mV/V electrical signal using strain gauges
Accelerometer
Strain gauge
Switch
String Potentiometer
Air flow sensor

Electroacoustic:

Geophone - converts ground movement (displacement) into voltage
Phonograph
Hydrophone - converts changes in water pressure into an electrical form
Loudspeaker, earphone - converts changes in electrical signals into acoustic form
Microphone - converts changes in air pressure into an electrical signal
Piezoelectricity - converts pressure changes into electrical form
Tactile transducer

Photoelectric effect:

Laser diode, light-emitting diode - convert electrical power into forms of light
Photodiode, photoresistor, phototransistor, photomultiplier tube - converts changing light levels into electrical form

Electrostatic:

Electrometer
Liquid crystal display (LCD)

Thermoelectric:

Resistance temperature detector Resistance Temperature Detector
Thermocouple
Peltier cooler
Thermistor (includes PTC resistor and NTC resistor)

Radioacoustic:

Geiger-Müller tube used for measuring radioactivity.
Receiver (radio)