_ may be due to the weight of a fluid column, or due to applied mechanical energy.

_ is provided by such devices as a pump or blower and stored in the form of a fluid under pressure, at an elevated height, or both.

_ may also be mechanical energy in the form of a fluid under pressure, such as pneumatic or hydraulic pressure.

_ is anything that changes or tends to change the state of rest or motion of a body.

Pressure drop is a pressure increase that occurs due to friction or obstruction as an enclosed fluid flows from one point in a process to another.

When measuring vacuum, the units _ as the pressure decreases.

Vacuum pressure measurement is used when a process is maintained at less than _ pressure.

_ is only determined by the height of the liquid.

For example, the head of water towers of different shapes depends only on the height of the _.

For a vertical cylindrical tank with a _ bottom, each unit of level represents an equal unit of volume.

Level is normally measured in _ or translated into units of volume or weight.

Common visual level measuring instruments are gauge glasses, magnetically coupled level gauges, and _.

A _ is a point level measuring instrument consisting of a hollow ball that floats on top of a liquid in a tank and is attached to the instrument.

For an open vessel, the simplest way to measure hydrostatic pressure is to connect a _ to the side of the vessel at the lowest practical level.

A _ level-control capacitance probe is used as a switch to signal an alarm or actuate a circuit when the level in a tank or vessel reaches a specified level.

A conductivity probe is a(n) _ measuring system consisting of a circuit of two or more probes or electrodes, or an electrode and the vessel wall.

_ probes are affected by changes in the dielectric constant of the material in the vessel.

A(n) _ sensor is a point level measuring instrument consisting of two probes, with one of the probe tips being heated.

A(n) _ sensor is the part of a continuous level measuring system consisting of an electronics module, a waveguide, and a float containing a magnet.

A time domain reflectometer (TDR) is another name for _ radar.

_ is the time it takes for a transmitted ultrasonic signal to travel from the level transmitter to the surface and back to the receiver.

A tuning fork level detector is a _ measuring instrument consisting of a vibrating tuning fork that resonates at a particular sound frequency.

For a nuclear level instrument, elements such as cesium 137 or cobalt 60 provide a(n) _ in the form of gamma rays.

If multiple load cells are used on one vessel, the maximum total weight of the vessel is _ the number of load cells.

_-type strain gauge load cells are used to measure the weight in vertical vessels.

_ flow is the flow of a bulk solid where all material in a silo flow down toward the bottom at the same rate.

_ is the process of discharging water and undesirable accumulated material.

A(n) _ is a valve located on a water column used to determine the boiler water level if the gauge glass is not functional.

Try cocks are typically used for pressures up to _ psi.

_ law states that the absolute pressure of a given quantity of a gas varies directly with its absolute temperature provided the volume remains constant.

_ is the quantity of fluid passing a point at a particular moment.

The combined gas law shows the relationship between volume, pressure, and _.

Fluid power systems transmit power through a(n) _ hydraulic fluid.

_ law states that the volume of a given quantity of gas varies directly with its absolute temperature provided the pressure remains constant.

_ is the quantity of fluid that passes a point during a specific time interval.

_ law states that the absolute pressure of a given quantity of gas varies inversely with its volume provided the temperature remains constant.

A(n) _ is the ratio between the inertial forces moving a fluid and viscous forces resisting that movement.

_ viscosity is the resistance to flow of a fluid and has units of centipoise (cP).

Turbulent flow in pipes typically occurs at Reynolds numbers above about _.

A primary flow element is a pipeline restriction that causes a(n) used to measure flow.

If the maximum measurable flow rate of a flowmeter is 100 gpm of water and the minimum flow rate is 20 gpm of water, the rangeability is.