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WorksheetsTCC 203 - Instrument
Total questions: 20
Worksheet time: 3hrs 20mins
____________ is a collective term for measuring instruments that are used for indicating, measuring and recording physical quantities.
Instrumentation
Controller
Meaurement
Data
A physical or chemical property of a process that is measured and controlled.
process variable
controller
measurement device
electrical signal
___________ is a physical quantity that expresses the degree of hotness and coldness of an object.
Temperature
heat
pressure
flow rate
Often defined as the height of a liquid in a container.
Level
heat
pressure
flow rate
The quantity of fluid (gas, liquid or vapor) that passes in a point per unit time.
Level
heat
pressure
flow rate
________is a quantitative measure of the acidity or basicity of aqueous or other liquid solutions.
pH
heat
pressure
flow rate
If the pH of water is zero, then it is ____________.
acidic
alkaline
nuetral
An instrument function that indicates the current condition of the process.
indicator
transmitter
controller
recorder
Sends information to another component via a signal
indicator
transmitter
controller
recorder
Keeps the record of the process variable.
indicator
transmitter
controller
recorder
Maintains the PV at a specific quantity
indicator
transmitter
controller
recorder
The most common electronics signal used in the process is 4 to (a) mA
_________ pressure, measures the pressure between two ports.
Differential
absolute
Guage
Atmospheric
A sensor which when pressure is applied, the diaphgram changes between capacitive plates.
resistance
capacitance
inductance
conductance
A sensor which when pressure is applied, the core moves up and down creating variable voltage
resistance
linear voltage differential transformer
inductance
conductance
A type of sensor that uses quartz crystal that produces small voltage as they are compressed.
piezoelectric
linear voltage differential transformer
inductance
conductance
The formula for pressure to level conversion.
P = L x SG x k
P = L x SG/ k
P = L + SG + k
P = L - SG x k
The guage pressure reads 245.3 kPA. Calculate the level of the tank?
25 m
35 m
45 m
55 m
What is the specific gravity of water?
(a)
When the current reads 16 mA, what is the equivalent pressure in kPA?
(note: in pressure scale each line has 125 kPA value)
(a)
