What gauge type is preferred when clear readability and data logging are priorities?

What gauge type is preferred when clear readability and data logging are priorities?

• A. Digital gauge
• B. Analog gauge
• C. Mercury gauge
• D. Bourdon gauge

Answer: (A)

When readability and data logging are priorities, digital readouts are preferred. A digital gauge shows the pressure value numerically, so readings are unambiguous and quick to interpret at a glance. This exact numeric output also makes automatic data capture straightforward, allowing easy export to data loggers, SCADA systems, or computer records with proper time stamps, which reduces transcription errors. In contrast, analog gauges require interpreting a needle position and can suffer from parallax errors, making precise logging more error-prone. Mercury gauges pose safety concerns and are not commonly used today, and Bourdon gauges provide a mechanical, analog indication that isn’t as readily integrated into digital data logging.