#electrical measurement
- Ammeter — An apparatus or measuring instrument used to determine the intensity of an electric current flowing through a circuit, expressed in amperes or its subdivisions (milliamperes, microamperes). To perform a correct measurement, the device must be connected in series within the analyzed electrical circuit and possesses an extremely low internal resistance to avoid altering the initial electrical parameters.
- Ampere-hour meter — An instrument or measuring apparatus designed to determine and integrate the total quantity of electricity flowing through an electrical circuit over a timeframe, expressed in ampere-hours (Ah). This device functions as a time-integrator of the electrical current intensity, being primarily utilized for monitoring the state of charge and discharge of industrial accumulator banks.