Pilot Devices
Learning Objectives
After studying this section, students should be able to:
- Describe common control devices such as momentary-contact pushbuttons.
- Describe the behaviour of common switches, including their terminology, uses, number of switchable poles, and throw positions.
- Be familiar with basic pilot devices such as liquid-level switches, pressure switches, limit switches, etc.
- Describe the action and purpose of the zero-speed switch.
