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Industrial Electronics > Other Sensors > Flashcards

Other Sensors Flashcards

1
Q

is the distance measure with respect to a fixed reference point and can be measured whenever power is applied.

A

Absolute position

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2
Q

a measure of the change in position and is not referenced to a fixed point. It can
give very accurate one component with respect to another.

A

Incremental position

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3
Q

measured by the distance traversed in a given time, velocity when moving at a
constant speed, or acceleration when the speed is changing in a straight line

A

Rectilinear position

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4
Q

measurement of the change in position of a point about a fixed axis measured
in degrees or radians.

A

Angular position

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5
Q

is an angular displacement of 1/60 of a degree

A

Arc-minute

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6
Q

is a measure of the rate of rotation

A

Angular motion

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7
Q

the rate of change of position. This can be linear measurement or angular
measurement

A

Velocity or speed

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8
Q

is the rate of change of speed.

A

Acceleration

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9
Q

is a measure of the periodic motion about a fixed reference point or the shaking
that can occur in a process due to sudden pressure changes, shock, or unbalanced loading in rotational equipment.

A

Vibration

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10
Q

is a three-terminal circuit element that consists of a resistor and a moving contact.
Serve dual functions: (1) they can act as voltage dividers, splitting
an input voltage into two components that sum up to the original input, and (2)
they can function as variable resistors.

A

Potentiometers

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11
Q

is movement in one direction along a single axis. A position or linear displacement sensor is a device whose output signal represents the distance an
object has traveled from a reference point.

A

Linear variable differential transformers ((LVDT)

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12
Q

are used for very accurate incremental position measurements.

A

Light Interference lasers

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13
Q

can be used for distance measurements

A

Ultrasonic, infrared, laser, and microwave devices

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14
Q

A specific magnetic sensor is used to measure the direction and strength of magnetic fields from electromagnets or permanent magnets, with its output changing in proportion to the magnetic field’s strength.

A

Hall Effect Sensor

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15
Q

is an alternative to the Hall effect device. Its resistance
changes with magnetic field strength.

A

Magneto resistive element (MRE)

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16
Q

detect motion by sensing the presence or absence of light

A

Optical devices

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17
Q

is an electromechanical device that is used to measure acceleration forces

A

Accelerometers

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18
Q

is typically use acceleration devices to measure vibration

A

Vibration sensors

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19
Q

is a term that relates the mass of an object to its
acceleration and acts through its center of mass.

A

FORCE

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20
Q

Measure of the quantity of material in a given volume
of an object

A

MASS

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21
Q

of an object is the force on a mass due to the pull of
the gravity

A

WEIGHT

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22
Q

a measure of the force that can cause an object to
rotate about an axis. It is a vector quantity. The direction of this
vector depends on the direction of the force on the
axis.

A

Torque

23
Q

occurs when two parallel forces of equal amplitude,
but opposite directions, are acting on an object to
cause rotation.

A

COUPLE

24
Q

is a transducer that converts tensile and compressive
force into measurable electrical output. It used to generate an electrical signal that is required
mostly in industrial application.

A

LOAD CELL

25
Q

A load cell works by converting mechanical force into ____ that the user can read and record. Most commonly used among the three types, specifically for weighing applications
including industrial scales, medical scales, and even retail scales.

A

digital values

26
Q

highly sensitive lab instruments designed to accurately
measure mass.
It provide simple and accurate, and operates on the
principle of torque.

A

ANALYTICAL OR LEVER BALANCE

27
Q

is a device that measures weight by measuring the
deflection of a spring when a weight is applied
The deflection of the spring is proportional to the
weight applied.

A

SPRING TRANSDUCER

28
Q

can be used to measured force

A

HYDRAULIC AND PNEUMATIC DEVICES

29
Q

____ use easily-compressible gas like air or
pure gas

A

Pneumatics

30
Q

_____ utilize relatively-incompressible liquid media like mineral oil, ethylene
glycol, water, synthetic types, or high temperature
fire-resistant fluids to make power transmission
possible.

A

hydraulics

31
Q

Produce an electrical charge between the opposite
faces of a crystal when the crystal is deformed by a
force that makes it suitable for use as a force sensor

A

PIEZOELECTRIC DEVICES

32
Q

Many crystals exhibit the piezoelectric effect. Some
crystals are as follows:

A

Quartz, Rochelle salt, Lithium
sulphate, and Tourmaline.

33
Q

_____ are often used in electronics for their precise and stable frequency
characteristics.

A

Quartz crystals

34
Q

typically refers to an electronic component that utilizes quartz crystals in its operation. ______ are used in many everyday electronic goods, such as smartphones and other information and communication systems, high-resolution audio products and other audio-visual equipment, and automobiles.

A

Quartz crystal devices

35
Q

also known as a “dyno”
, is a device that measures force, torque or
power. It is a device that uses the twist or bending in a shaft due to torque to
measure force.

A

DYNAMOMETER

36
Q

an electronic device that measures and
detects infrared radiation in its surrounding
environment.

A

INFRARED SENSOR

37
Q

Anything that emits heat (everything that has
a temperature above around five degrees
Kelvin) gives off _____.

A

infrared radiation

38
Q

There are two types of infrared sensors:

A

active and passive

39
Q

is a type of radiation
detection device. It detects the leakage current between two plates that have a voltage between them. device in which two electrodes have been placed within an enclosed volume of gas to create an electric field.

A

IONIZATION CHAMBERS

40
Q

is the pattern of disturbance caused by the movement of energy traveling through a
medium (such as air, water, or any other liquid or solid matter) as it propagates away from the source of the sound. It cannot travel through space or a
vacuum, unlike radio waves.
Start at 16 Hz and go up to 20 kHz. It can travel through the air at about 340
m/s.

A

SOUND WAVES

41
Q

or compression wave has a regular pattern of high- and low-pressure regions. a wave (as a sound wave) in which the
propagated disturbance is a variation of pressure in a material medium (such as air)

A

PRESSURE WAVES

42
Q

is a logarithmic measure used to measure and compare amplitude and power levels.
It is also widely used in electronics, signals and communication. _____ is a logarithmic way of describing a
ratio. The ratio may be power, sound’ pressure, voltage or intensity or several
other things

A

dB

43
Q

electromagnetic radiation of any wavelength that travels in a vacuum with a speed of 299,792,458 meters (about
186,000 miles) per second.
is an ultra-high frequency
electromagnetic wave that travels at 3 x 10^8 m/s. Its amplitude is measured in footcandle (fc) or lux (lx).

A

LIGHT

44
Q

is the brightness of light.
The unit measurement of_____ in the English system is the foot-candle (fc). In the SI system unit is the lux (lx).
The dB is also used for the comparison of
_____.

A

light intensity

45
Q

transducers used to convert sound levels into electrical signals.

A

MICROPHONES

46
Q

Variety of meters for measuring and analyzing sounds.

A

SOUND LEVEL METER

47
Q

Used for detection and conversion of light intensity into electrical signals. ______ can be classified as photovoltaic, photoconductive,
photoemissive, and semiconductor

A

Photocells

48
Q

convert sunlight into
electricity.

A

Photovoltaic cells

49
Q

change their resistance with light intensity.

A

Photoconductive devices

50
Q

the release of electrons from a usually solid material (such as a metal) by means of energy supplied by
incidence of radiation and especially light

A

Photoemissive

51
Q

are photosensitive
and are commercially available as photodiodes and phototransistors

A

Semiconductors

52
Q

bulb or lamp is a source
of electric light that works
by incandescence, which
is the emission of light
caused by heating the
filament.

A

INCANDESCENT LIGHT

53
Q

most common commercially available light sources used in industry.

A

SEMICONDUCTOR DIODES (LED)

54
Q

above 30 kHz sound waves are _____.

A

Ultrasonic

Industrial Electronics (4 decks)

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