Null Meter

Null meters are a type of measuring instrument used in electrical and electronic properties testing. They are classified under the supply class "Electrical And Electronic Properties Measuring And Testing Instruments" in the supply group "Instruments And Laboratory Equipment".

Null meters are specifically designed to measure and indicate the null or zero value of a particular electrical or electronic property. They are commonly used in applications where high accuracy and precision are required, such as in laboratory experiments, research, and quality control processes.

Null meters work on the principle of null detection, where the instrument is balanced or adjusted to indicate zero when the measured property reaches a specific value. This balancing process is achieved by adjusting the instrument's controls until the null or zero point is reached, indicating the desired property value.

Some common types of null meters include null detectors, null voltmeters, null bridges, and null detectors for specific properties like resistance, capacitance, or inductance. These instruments often have highly sensitive indicators or displays to accurately detect and display the null or zero value.

Overall, null meters are essential tools in electrical and electronic properties testing, providing precise measurements and ensuring accurate results in various applications.