When one end of a thermocouple is heated, a small ___ is produced.

A steam pressure gauge should have a range of ___.

A bubbler may also be called a(n) ___.

A steam pressure gauge must be protected from live steam by ___.

Opacity smoke indicator alarms can be used to ___ in the gases of combustion.

Vacuum gauges are calibrated in inches of ___ atmospheric pressure.

A control valve is an example of a ___.

Thermocouples measure ___.

A temperature reading of ___ can be made with a thermocouple.

Liquid level in a tank may be measured with a ___.

Flow meters measure the rate of the flow of ___.

A differential-pressure flow meter functions by measuring the difference in pressure across a ___.

A rotameter consists of a ___.

A variable-area flow meter maintains a constant ___ and allows the flow area to change with the flow rate.

A(n) ___ measures a process variable.

Thermometers used in a steam plant typically measure ___.

A ___ is used to measure the difference in draft pressure between the atmosphere and the furnace, breeching, or stack.

A ___ consists of two dissimilar metals that are joined together to form a circuit that generates a voltage proportional to the difference in temperature between the hot and cold ends of the wires.

Absolute pressure is equal to ___.

A float is a level measuring instrument with a ___ attached to it that floats on top of a liquid in a tank.

An ultrasonic sensor measures ___ to determine level.

A boiler steam pressure gauge should be connected to the ___ side of the boiler.

A(n) ___ is a flow restriction device consisting of a fabricated pipe section with a converging inlet section, a straight throat, and a diverging outlet section.

A ___ pressure regulator is a regulator that uses upstream fluid as a pressure source to power the diaphragm of a larger valve.