Exam 16: Advanced Automatic Controlsdirect Digital Controls Ddc and Pneumatics

Controllers are devices that can measure some type of environmental parameter or a controlled variable and convert this parameter to a value that the controller can understand.

Modern control systems only have on-off control capability.

The controlled environment could be controlled by an array of ____ such as dampers, fans, variable-frequency drives.

Today control output devices can receive signals as either analog or digital.

The very first control systems were used to start and stop the various components.

What are the basic types of controls being installed today to control large systems?

In a home air-conditioning system, the ____________________ is the sensor.

The _______________ system actually changes or conditions a signal in three steps.

_______________ are devices that can measure some type of environmental parameter or a controlled variable and converting this parameter to a value that the controller can understand.

List three temperatures that may be important when testing equipment.

Electronic controls are commonly called ____.

Space temperature is the only temperature that is important in modern systems.

In most system compressors, the compressors are controlled with a ____.

Most system compressors provide ____ psig of air pressure to the storage tank.

A ____ reacts to stop, start, or modulate the flow of water, air, or refrigerant to the system or conditioned space