Hardware instruments are classifi ed as ______ elements.

• 1

• 3

• 2

• 4

Choose the correct order of elements

• transmitter - sensor - controller - final control element

• sensor- controller - transmitter - final control element

• sensor - transmitter - controller - final control element

• final control element - sensor - transmitter - controller

The primary signal is usually obtained or converted in the form of ________ or _________.

• force, current

• electrical voltage, resistance

• electrical voltage, current

• resistance, current

Choose the temperature sensor:

• Thermocouple

• Strain gauge

• Float gauge

• Piezoelectric

Choose the input signal of electrical controller

• Liqiud pressure

• 3–15 psi air

• Current or digital

• 4–20 mA

What does the code name FIC stand for?

• flow integral controller

• flow indicating controller

• flow indicating code

• flow integral code

In the _______, a workstation with supervising computers are connected to the loop controllers, which are distributed throughout the process, each performing locally to control the respective control variables.

• PLC

• DCS

• microprocessors

• SCADA

The _______ is where the controller can be operated to change the SPs, record the PVs, tune the parameters of the controller, and have correcting signals delivered to the control valves.

• distributed control system

• controller

• crude throughout control

• control room

What parameters need to be controlled in the desalter control?

• pressure, interface control

• temperature, pressure

• temperature, interface control

• level, pressure, temperature

The coil outlet temperature of the furnace is controlled by a ___________ where the master controller gets its input signal from the thermocouple from the coil outlet fl uid and a slave controller manipulates the fuel to the furnace.

• ratio control

• batch control

• feedforward control

• cascade control