What type of refrigerant is typically found in the feeler bulb of a system?

In refrigeration systems, the feeler bulb is a key component that holds a refrigerant, which is used to sense temperature changes. The ideal refrigerant for this application is one that is non-flammable and non-toxic because it ensures safety and reliability during operation. Non-flammable refrigerants minimize the risk of fire hazards, especially in the presence of heat sources or electrical components. Additionally, being non-toxic is crucial to avoid health risks to personnel who handle the equipment.

These characteristics allow the feeler bulb to function effectively without posing significant dangers to people or the environment. Overall, using a non-flammable and non-toxic refrigerant in the feeler bulb aligns with safety standards and environmental regulations in the refrigeration industry.