Answers were Sorted based on User's Feedback
Answer / mohd asif qureshi
A transducer is a device that converts one form of energy
to another. Energy types include (but are not limited to)
electrical, mechanical, electromagnetic (including light),
chemical, acoustic or thermal energy. While the term
transducer commonly implies the use of a sensor/detector,
any device which converts energy can be considered a
transducer. Transducers are widely used in measuring
Antenna – converts electromagnetic waves into electric
current and vice versa
Cathode ray tube (CRT) – converts electrical signals into
Fluorescent lamp, light bulb – converts electrical power
into visible light
Magnetic cartridge – converts motion into electrical form
Photodetector or photoresistor or light dependent resistor
(LDR) – converts changes in light levels into resistance
Tape head – converts changing magnetic fields into
Hall effect sensor – converts a magnetic field level into
electrical form only
Electro-galvanic fuel cell
Electromechanical (electromechanical output devices are
generically called actuators):
Rotary motor, linear motor
Vibration powered generator
Potentiometer when used for measuring position
Load cell – converts force to mV/V electrical signal using
Air flow sensor
Loudspeaker, earphone – converts electrical signals into
sound (amplified signal → magnetic field → motion → air
Microphone – converts sound into an electrical signal (air
pressure → motion of conductor/coil → magnetic field →
Pickup (music technology) – converts motion of metal
strings into an electrical signal (magnetism → electricity
Tactile transducer – converts electrical signal into
vibration ( signal → vibration)
Piezoelectric crystal – converts solid-state electrical
modulations into an electrical signal (vibration →
electrical current → signal)
Geophone – converts a ground movement (displacement) into
voltage (vibrations → motion of conductor/coil → magnetic
field → signal)
Gramophone pickup – (air pressure → motion → magnetic field
Hydrophone – converts changes in water pressure into an
Sonar transponder (water pressure → motion of
conductor/coil → magnetic field → signal)
Laser diode, light-emitting diode – converts electrical
power into forms of light
Photodiode, photoresistor, phototransistor, photomultiplier
tube – converts changing light levels into electrical form
Resistance temperature detector (RTD)
Thermistor (includes PTC resistor and NTC resistor)
Geiger–Müller tube – used for measuring radioactivity
|Is This Answer Correct ?||8 Yes||0 No|
Answer / mohd asif
Transducer, in general, is a device which converts non electrical quantity into electrical quantity.
|Is This Answer Correct ?||8 Yes||4 No|
Answer / syed azam hussain
[<Lat. Trans, across + ducere, to lead]
Devices to transform signals between different physical
Active: input signal modulates output energy; e.g.
liquid crystal display.
Passive: input signal transformed to output energy;
Bidirectional, e.g. motor/generator;
Unidirectional, e.g. photodiode
|Is This Answer Correct ?||1 Yes||0 No|
The DCS has the following signal type:
What is the difference between pt100, pt500 and pt1000 RTDs?
can install leveltrol in steam drum for measurment the level of steam drum? if not then why?
what is the resource block mode in foundation field but ? what is advantages for this
A motor is taking 15 Amps at no load and 60 Amps at full load. and a valve has to open 10% at full load and 80% at no load. How to draw ladder logic.(PLC).
hello can yoy pls send me previous papers of jindalpower and steel ltd.....'m from instrumentation..... firstname.lastname@example.org
Describe how to calibrate various types of instruments and transmitters using ISA industrial consensus standard techniques.
Which standard is used for calibration of Control Valves ?
what r all the closed loop used in boiler? for this related tell some web address..
what is actual difference between pressure Transducer & Pressure Transmitter.
If a differential pressure transmitter is calibrated for 0~2500 mmH2o and transmits a 4~20mA dc signal. The transmitter is placed across an orifice plate which is sized to create 2500 mmH2o differential at 5000m3/Hr a) what is the flow rate when the transmitter signal is 13.0mA DC? b) what is the signal output of the transmitter when flow rate is 2500 m3/Hr ?
please tell me how maintainence person shifted to good epc company/design company