What type of monitoring device can detect fluid levels in a reservoir?

A level sensor is specifically designed to detect the level of fluid in a reservoir. These sensors can provide accurate and real-time measurements, alerting operators to changes in fluid levels, which is crucial for maintaining proper system functioning and preventing overflow or dry running of pumps. Level sensors can operate using various technologies, such as capacitive, ultrasonic, or float-based methods, all tailored to suit different application needs and environments.

In contrast, a pressure gauge measures the pressure exerted by the fluid within the system, a flow meter quantifies the rate of fluid movement through a system, and a temperature sensor monitors the temperature of the fluid, none of which directly provide information about fluid levels in a reservoir. Thus, when the goal is to monitor the actual fluid level, a level sensor is the ideal choice.