Working with pressure is a critical part of many industries, from hydraulics and pneumatics to HVAC and medical systems. However, mistakes in measuring or interpreting pressure can be costly, cause equipment failure, or create safety hazards. Understanding common errors helps prevent these problems.

One frequent mistake is confusing absolute pressure (bara) with gauge pressure (barg). Absolute pressure is measured relative to a vacuum, while gauge pressure is measured relative to atmospheric pressure. Using the wrong reference can lead to inaccurate readings and potentially unsafe conditions.

Incorrect conversion between units is another common issue. Pressure is measured in various units such as bar, psi, MPa, atm, and kgf/cm². Applying the wrong conversion factor or rounding numbers “by eye” can result in serious errors in calculations and equipment settings.

Choosing the wrong measurement range or accuracy class for instruments is also a frequent error. Using a gauge outside its optimal range can damage the instrument or provide unreliable data. Selecting the right accuracy class ensures precise readings and consistent performance.

Failing to calibrate pressure instruments regularly is another source of mistakes. Over time, sensors and gauges can drift, leading to inaccurate measurements. Regular calibration maintains reliability and prevents hidden errors from affecting processes.

Finally, improper handling and installation of instruments can create errors. Pressure sensors must be installed according to manufacturer guidelines, avoiding vibrations, extreme temperatures, or incorrect mounting positions that could compromise readings.

By being aware of these common mistakes—confusing pressure types, using incorrect conversions, rounding numbers inaccurately, selecting wrong ranges, neglecting calibration, and improper installation—engineers and technicians can improve safety, efficiency, and reliability in all pressure-related systems.

In summary, careful attention to measurement type, unit conversion, instrument selection, calibration, and installation helps avoid costly pressure mistakes. Awareness and proper practices ensure accurate data and safe, efficient operations across all applications.