The video tutorial covers the components and operation of refrigeration systems, focusing on maintaining liquid refrigerant levels within defined limits. It introduces digital liquid level switches, explaining their components and installation. The tutorial also discusses Refactometry technology, which uses microwave frequencies to detect liquid and vapor phases, ensuring system stability and alerting engineers to potential issues.

What issues can arise from improper installation of liquid level switches?

What happens when the liquid level drops below the lower limit switch in a refrigeration system?

Explain the technology of Refactometry used in liquid level switches.