Other Sensor Quiz

Pressure can be used to measure the height of liquid in a container. T/F

True

Flow rates of solids are determined by measuring the weight on a specified length of a conveyer belt during a given time period. T/F

True

The differential pressure meter can be used to measure the flow rate of a liquid, but not a gas. T/F

False

Most volumetric flow rate measurements are taken using an inferred method. T/F

True

Positive displacement flow meters are physically rotated by the fluid to develop the readings. T/F

True

A hydrostatic head level detector can be used to measure level within a confined and pressurized container. T/F

False

A rotameter is capable of reading the flow rate of a liquid or a gas. T/F

True

The level of a material can be determined by measuring the weight of the contents in a pressurized container. T/F

False

A capacitive probe is a recommended device to measure the level of mineral water in a tank. T/F

False

Pressure is measured as a force per unit of __________.

area

The accuracy of a(n) __________ is altered by atmospheric pressure fluctuations.

gage pressure measurement

Head is a measure of the __________.

height of a column of fluid

A thermocouple produces a voltage that is proportional to the __________.

difference in temperature between the hot and cold junction

An arrangement of several thermocouples wired in series for the purpose of increasing sensitivity is referred to as a(n) __________.

thermopile

Thermistors react according to the principle of __________ temperature coefficient.

negative

The Reynolds number is reduced if __________.

the diameter of the pipe is smaller, the viscosity of the fluid is larger, the velocity of the fluid reduces, a fluid with a lower density is used

The larger the diameter of a pipe, the __________ the fluid to pass through.

easier it is for

A Time of Flight flow meter should be placed in the pipe

at least 5 pipe diameters away from anything causing turbulence

In a differential pressure flow meter, the velocity of a fluid leaving the orifice plate is __________ the fluid that approaches it.

greater than

The __________ design is the best type of differential pressure flow meter to measure slurries.

venturi tube

A mass flow meter uses a __________ to determine the flow.

weight reading

A Coriolis flow meter is a __________ type of flow meter.

mass

Which type of flow meter does not use inferred readings to determine flow?

Positive displacement or Velocity

The formula Q=VA indicates that volumetric flow can be determined if two variables are known. These variables are A -the cross-sectional area of the pipeline, and V -the fluid __________.

velocity

A paddle wheel detector is a __________-type of level measurement instrument.

point

The differential pressure method takes measurements in a(n) __________ container.

pressurized

When a pressure transducer is connected to the bottom of a vessel for the purpose of measuring level, what is the actual variable being measured?

hydrostatic head pressure

A(n) ___ has a larger range than a ___ at which it can measure temperature.

RTD, thermistor

When cooled, the volume of a gas in a sealed container will ____and the pressure will __________.

remain the same, contract proportionally

An ultrasonic level detector is a(n) ___________-type sensor which is ideal for measuring dangerous or sterile materials because it is __________.

analog, noninvasive

The resistance of a(n) __________ is more linear than a(n) __________ over the temperature span of which it is capable of measuring.

RTD, thermistor

The method of measuring one variable to determine the value of another is referred to as __________.

an inferred measurement

Using load cells on a conveyor to measure solid particle flow only works for very large items. T/F

False

Weighing the material on a conveyor belt is an inferred method of flow measurement. T/F

True

what sensing elements can be used to measure the flow of solid materials on a conveyor.

LVDT, strain gauge