What is an ammeter used for in aviation?

An ammeter is specifically designed to measure the current flowing through a circuit, which is crucial in aviation for monitoring electrical systems. Knowing the amount of current flowing helps technicians and pilots ensure that the electrical systems are operating within acceptable parameters. This can indicate whether a circuit is overloaded, which can prevent potential failures or hazards.

While there are devices for measuring voltage or monitoring battery levels, those functions fall under the roles of voltmeters or battery monitors, respectively. An ammeter focuses solely on current, making it an essential tool for maintaining the reliability and safety of aircraft electrical systems. The ability to monitor current can help in diagnosing issues and maintaining overall system integrity.