دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

abbr: immersion heater temperature switch.

n: a temperature-sensitive device installed on engines in extremely cold climates, such as in Alaska and Siberia. Before the engine is started, the switch senses very cold coolant and turns on an immersion heater in the coolant tank, thus ensuring that the engine warms up quickly.