What is a common indication of a malfunction in a nuclear gauge?

A common indication of a malfunction in a nuclear gauge is fluctuating or unexpected readings. This is significant because nuclear gauges rely on precise measurements for accurate results; any variation or inconsistency in readings can indicate that the device is not functioning correctly or is out of calibration. Such fluctuations may arise from various issues such as a malfunctioning source, detector problems, or interference from external factors. Thus, maintaining stable and accurate readings is critical for the safe and effective use of nuclear gauges in measuring material density, moisture content, or other parameters. Monitoring for unexpected changes is essential to ensure the reliability and safety of the equipment.