What does a multimeter measure in an electric heating system?

In an electric heating system, a multimeter is an essential tool that measures voltage, current, and resistance. These measurements are critical for diagnosing and troubleshooting electrical issues within the system.

Voltage measurement allows technicians to verify that the electric heating elements are receiving the correct electrical supply. Current measurement helps in assessing whether the components are drawing the appropriate amount of electricity, which is vital for ensuring efficient operation. Resistance measurement is important for checking the integrity of electrical components, such as heating elements and connections, to prevent potential failures.

While temperature and humidity are important in HVAC systems, they are not measured by a multimeter. Pressure and flow rate are typically measured by specialized instruments, such as manometers or flow meters, and are more relevant in systems dealing with fluids rather than electrical diagnostics. Power consumption, while related to the operation of the system, isn't a direct measurement provided by a multimeter; it can be calculated using the values obtained for voltage and current. Therefore, the multimeter's capabilities make it indispensable for evaluating an electric heating system accurately, focusing specifically on electrical properties.