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vocabulary
process Systems
Temperature/ Pressure
measure your measures
hodge-podge
100
Something subject to change.
What is a Variable
100
Requires operator action
What is a Manual Process Control System
100
Used to measure dry air tempature.
What is a dry-bulb
100
Transparent tube attached to top and bottom of tank
What is a Gauge-glass
100
Most common type of radiation detectors
What is Gas-Filled Radiation dectors
200
A change in state
What is a Process
200
Informes an operator that a controlled parmeter has been exceeded
What is an Alarm
200
Uses two types of meters to find relative humidity outside.
What is a Sling Psychrometer
200
float may sink, mechanism may jam, chain may slip off gears; Are faults of what device?
What is a Chain Float
200
Causes: Photoelectric effect, Compton Scatering, Pair Production._______ ______, At what different_______ __________.
What is Gamma Rays, Energy levels
300
Degree of results agreement
What is Precision
300
Output has no effect on control system
What is an Open-loop
300
Typicaly uses a bridge circuit
What is a R.T.D.
300
Used in tank farms to automatically measure tank levels.
What is a Reel tape Drive
300
Wobbles while measuring packets of volume
What is a Nutating Disc
400
U-Shaped tube
What is a Manometer
400
Feedback alters input Automaticly
What is closed-loop
400
Developed to be sesitive to low prressure, most accurate from : 0.5 to 75 psig
What is a Bellows- Type detector
400
No projections into fluid, no sudden changes in contour
What is a Venturi Tube Construction
400
An indicator has this _______ ________, if the input signal is greater than zero when reading zero
What is Live-Zero
500
Acts Directly on process system to regulate controlled Variable.
What is Final Control Element.
500
Has at lease two Process variables
What is Automatic Process
500
Advantages of this device: 1. simple, 2. good for measuring differential Pressure, 3. inexpensive
What is Manometer
500
Used to Measure flow in nonexplosive gas environments.
What is Hot Wire Anemometers
500
These three instrument channel componets are connected when the signal needs to be boosted to aa useable magnitude at the indicator
What is amplifier, transmitter, Receiver ( slide 370)