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PLC's > Sensors and Actuators > Flashcards

Sensors and Actuators Flashcards

1
Q

What is the function of an encoder?

A

Detecting the position and/or velocity of a rotary shaft.

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2
Q

Is a Limit Switch a Discrete or Non-discrete Sensor?

A

Discrete

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3
Q

What Temperature Sensor has a temperature range of -80C to 150C?

A

Thermistor

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4
Q

Are Encoders Discrete or Non-discrete Sensors?

A

Discrete

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5
Q

Is a Proximity Sensor a Discrete or Non-discrete Sensor?

A

Discrete

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6
Q

What is the primary application of Hall effect sensors?

A

Detecting magnets or magnetic fields, often used in brushless motors

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7
Q

Are Ultrasonic Transducer Proximity Sensors Contact or Non-contact?

A

Non-contact up to 10m

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8
Q

Is a Limit Switch a Contact or Non-contact Sensor?

A

Contact

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9
Q

An Integrated Circuit is the ____ Linear with the ____ Output and has a _____ cost

A

Most Linear, Highest Output, Low Cost

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10
Q

_____ Branching is the selection of one sequence from a set of sequences.

A

OR Branching

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11
Q

A Pyrometer has the ________ max temperature and a _____ cost

A

Highest Maximum Temperature, High Cost

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12
Q

What Temperature Sensor is made of Two Dissimilar Metals?

A

Thermocouple

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13
Q

Are Inductive Proximity Sensors Contact or Non-contact?

A

Non-contact up to 15mm

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14
Q

What Temperature Sensor has a temperature range of -250C to 750C?

A

RTD

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15
Q

______ Branching is when the transition out of a step causes more than one step to be activated simultaneously.

A

AND Branching

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16
Q

A Potentiometer is a _______ Sensor

A

Displacement

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17
Q

Is a Pyrometer Contact or Non-contact?

A

Non-contact

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18
Q

A _________ can be Linear or Rotary

A

Potentiometer

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19
Q

What is the Temperature Range of an Integrated Circuit?

A

-30C to 85C

20
Q

Are Magnetic Reed Switch Proximity Sensors Contact or Non-contact?

A

Non-contact up to 60mm

21
Q

What is an Actuator?

A

Outputs from a PLC

22
Q

What two Sensors are both Discrete and Analog

A

Capacitive and Inductive

23
Q

Are Hall Effect Proximity Sensors Contact or Non-contact?

A

Non-contact up to 3mm

24
Q

What is a Sensor?

A

Inputs to a PLC

25
Q

What are the two main types of Sensors and Actuators?

A

Discrete (On/Off) and Analog.

26
Q

What is a Wheatstone Bridge used for in sensors?

A

Converting resistance changes into voltage changes.

27
Q

Are Capacitive Proximity Sensors Contact or Non-contact?

A

Non-contact up to 30mm

28
Q

What Temperature Sensor has a temperature range of -30C to 85C?

A

Integrated Circuit

29
Q

What makes RTDs more accurate than thermocouples?

A

They are more linear and stable.

30
Q

What is the Temperature Range of an Optical Pyrometer?

A

-20C to 4000C

31
Q

Are Photoelectric Proximity Sensors Contact or Non-contact

A

Non-contact up to 100m

32
Q

What Temperature Sensor has a temperature range of -20C to 4000C?

A

Optical Pyrometer

33
Q

Strain Gauges are almost always used in a _________ _________.

A

Wheatstone Bridge

34
Q

A Thermistor is ______ Linear, with a _____ Output, and has a ____ cost

A

Non Linear, High Output, Low Cost

35
Q

Wheatstone Bridges almost always uses a ____ _____

A

Strain Guage

36
Q

Are Ultrasonic Transducer Proximity Sensors Analog or Discrete

37
Q

Electric Motors are a type of _______ Actuator

A

Analog Actuator

38
Q

What is an RTD?

A

A thermometer that uses the change in resistance in a material to determine the temperature.

39
Q

Analog Sensors are often a ____ and a _____

A

Transducer and a Transmitter

40
Q

Many Transducers use a _____ _____ to convert a resistance change into a voltage change.

A

Wheatstone Bridge

41
Q

What are the three configurations of photoelectric sensors?

A

Through-beam, Retro-reflective, Diffuse reflective

42
Q

What Temperature Sensor has a temperature range of -270C to 1700C?

A

Thermocouple

43
Q

What type of materials do inductive proximity sensors detect?

A

Metals (ferrous and nonferrous)

44
Q

What is the Temperature Range of a Thermistor?

A

-80C to 150C

45
Q

A Strain Guage is a type of ______ Sensor

A

Force Sensor

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