Instrumentation Flashcards
Cannot be broken down into simpler substance/Pure substance with one type atom.
Element
Smallest particle of an element
Atom
Group of atoms with a + or - charge.
Ion
Ph under 7
Acid
Ph over 7
Alkaline (base)
Amount of water in the air.
Moisture
Measure of a chemical or physical properties.
Analytical
What is Kinetic Energy?
Energy of motion
What method of Heat Transfer uses fluid?
Convection
What method of Heat Transfer does not require matter?
Radiation
What method of Heat Transfer uses direct contact?
Conduction
T/F Heat always flows for low temperature to high temperature.
False, travels from high to low.
What is the purpose of a Thermowell?
Inserted into piping/equipment to measure temperature by measuring elements.
What is the electromagnetic Spectra?
A range of frequencies of electromagnetic radiation.
T/F An RTD is more accurate than a Thermocouple.
TRUE
What instrument uses its own buoyance force to measure level?
Displacer
If the mass of remains constant and the density of a liquid in a tank decreases, the level of liquid in the tank ___.
Increases
When the volume of a liquid in a tank decreases, the level of the liquid in the tank ___.
Decreases
When other instruments are unsuccessful to measure level, we turn to ___ devices.
Nuclear
A gage that senses the surface of a material is a ___.
Floating
Most common device to measure different pressure points.
D/P cell
What is the formula to calculate the Flow Rate of a liquid?
Volume/Time
What type of flow meters is the most commonly used in the process industry?
Differential Pressure (D/P)
Electromagnetic flow meters are generally used with what type of liquid?
Aqueous material (conductive liquids, slurries, corrosive/abrasive materials.
A primary element used in piping to create differential pressure is called ___ ___.
Venturi Tube
A Reynolds Number is used to determine whether flow is ___ or ___.
Laminar or Turbulence
T/F When a flowing fluid possesses a Reynolds Number greater than 4,000 it is considered to be laminar.
FALSE
Special flanges to mount orifice plates are called ___ flanges.
Orifice
If the flow rate through an orifice doubles the differential pressure.
Quadruples
CH₄
Methane
C₂H₆
Ethane
C₃H₈
Propane
C₄H₁₀
Butane
What is a Hydrometer used for?
Measures specific gravity
Property of matter by which it continues at rest or uniform motion unless it is changed by an external force.
Inertia
The amount of matter in a body
Mass
The density of a substance relative to the density of water.
Specific Gravity
When measuring pressure - 1 psi = ____ in. H₂O = ___.
(27.7/13) /// (2.04)
What are the 5 elements we can control in a control look?
Temperature, Flow, Pressure, Level and Analytical
The ability or tendency to float in water, air or other fluid.
Buoyancy
Pressure into an electrical signal
Transducer. (I/P)
