Digital Panel Meters perform digital processing on or conversion and display of voltages, currents, other analog signals, and pulse signals. They can also compare input values to set values, transfer data, and perform other functions.
Measuring Other Forms of Signals, Sensor Signals, and Non-linear Signals
To measure anything related to electrical output, such as power, reactive power, power factor, frequency or phase, any signals from sensors, or any non-linear signals, install a power transducer or a signal converter to convert DC voltage into DC current.
Summary of Element Symbols
|Denotation by JIS|
|NO contact||Contacts are open when the relay is inactive.|
|NC contact||Contacts are closed when relay is inactive.|
|Double-throw contact||Transfer contacts (also called double-throw contacts)|
control two circuits, one normally open contact and one
normally closed contact with a common terminal.
|AC power source|
|DC power source|
The following symbols are used to represent the characters for parameter names on a Digital Panel Indicator.