Mechanical and thermal meters are types of what?

Mechanical and thermal meters are types of energy meters. Energy meters are instruments used to measure electrical energy consumption over time and can take various forms, including mechanical and thermal designs. Mechanical meters typically utilize gears and rotating components to track energy usage, while thermal meters measure the heat energy consumed in heating applications.

Demand meters, on the other hand, measure the maximum power demand over a specific period, focusing more on peak rather than total energy consumption. Voltage meters measure electrical potential difference, and frequency meters measure the frequency of electrical signals. Therefore, while demand meters also relate to electrical measurements, they do so in a context that is distinct from the primary function of mechanical and thermal meters measuring total energy usage.