Which gauge is preferred when installation requires compatibility with digital controllers and alarms?

Which gauge is preferred when installation requires compatibility with digital controllers and alarms?

• A. Mechanical gauge
• B. Digital gauge
• C. Dial gauge
• D. Bourdon gauge

Answer: (B)

Digital compatibility with control systems is the factor being tested. Modern installations use digital controllers and alarms that expect digital data and signals. A digital gauge provides the reading in a digital format and often includes built-in digital outputs or communication options (like RS-485 or other protocols), allowing direct connection to controllers and alarm systems, plus easier data logging and remote monitoring. Analog gauges such as mechanical, dial, or Bourdon display pressure as a needle and typically require an additional transmitter or signal converter to feed a digital controller, which adds cost and potential for error. Because it can interface directly with digital control and alarm hardware, the digital gauge is the best choice.

Digital compatibility with control systems is the factor being tested. Modern installations use digital controllers and alarms that expect digital data and signals. A digital gauge provides the reading in a digital format and often includes built-in digital outputs or communication options (like RS-485 or other protocols), allowing direct connection to controllers and alarm systems, plus easier data logging and remote monitoring. Analog gauges such as mechanical, dial, or Bourdon display pressure as a needle and typically require an additional transmitter or signal converter to feed a digital controller, which adds cost and potential for error. Because it can interface directly with digital control and alarm hardware, the digital gauge is the best choice.