Instrumentation Mod. 2 Review

A straight ladder should extend a minimum of _____ above the upper edge of support.

• 1'

• 2'

• 3'

• 4'

A   ?   is defined as a space that is large enough for a human to enter but is not designed for continuous occupancy and has limited means for entry or exit.

• confined space

• cramped work space

• hazardous location

• vault

An analog signal is one that is a _______ output.

• continuous

• discrete

• missing

• inverse

A process variable that is to be maintained at some desired value is the _____.

• controlled variable

• maintained variable

• manipulated variable

• measured variable

Which of the following is NOT one of the four basic components of a control loop?

• sensor/primary element

• controller

• transmitter

• final control element

• converter

The difference between the upper and lower limits of a transmitters range is called the _____ of the instrument.

• span

• input

• output

• range

The abbreviation "LRV" stands for _____.

If a transmitter is calibrated from 30 psi to 350 psi, what is its span?

A transmitter is calibrated for an input range of 0-150 psi, and an output range of 4-20 mA. What would the expected output for an input of 130 psi?

• 13.87 mA

• 17.87 mA

• 8.12 mA

• 19.61 mA

A transmitter produces a 4-20 mA output for in input of 20-180℉. What is the gain?

• 0.1 mA/℉

• 10 mA/℉

• 0.125 mA/℉

• 2.5 mA/℉