114 Final Exam Flashcards

1
Q

What is the most common material for RTD’s

A

Platinum

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2
Q

What are thermocouples made of?

A

Two dissimilar metals

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3
Q

What are three methods for DP cell level measurement?

A

A bubbler, wet leg, and dry leg

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4
Q

What should an RTD read at 0 degrees C

A

100 ohms

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5
Q

What is the most common electrical signal?

A

4-20mA

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6
Q

What does a multimeter measure?

A

Voltage, Resistance, and current

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7
Q

What does a HART communicator do?

A

It monitors and configures smart transmitters

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8
Q

Where can HART communicators be connected to a smart transmitter?

A

anywhere in the current loop

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9
Q

What does an RTD measure?

A

Temperature

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10
Q

What should be considered when picking a test gauge?

A

Operating range

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11
Q

What makes test gauges different from normal gauges?

A

Test gauges are calibrated to a higher standard

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12
Q

What is used to calibrate low pressure devices?

A

Manometers

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13
Q

What is used to calibrate pressure devices?

A

Deadweight testers

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14
Q

How many points should be tested during calibration?

A

5

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15
Q

What are the two axis labels on a calibration chart?

A

Tested Device and Calibration Standard

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16
Q

What should the chart look like for a properly calibrated gauge?

A

A 45 degree line

17
Q

How many wires does an RTD have?

A

3, 2 red and 1 white

18
Q

What does RTD stand for?

A

Resistive Thermal Device

19
Q

How many wires does a thermocouple have?

A

2 wires