Changes in pressure calibration over 25 years
Twenty-five years ago, many of our younger practitioners were still at school. ISO9000 did not exist. People repaired pressure gauges. Most pressure transmitters were of 0,25% FS (full scale) accuracy. Pneumatic calibrators had large multi-turn dials and had to go back to the factory for calibration. Accuracy was not really of much importance. Instruments were calibrated using what was available, with no needs analysis. So what has changed in the last 25 years? Technology certainly has, so has the business environment. How has technology changed? In some fields, incrementally. In others, almost beyond comprehension.
- Change can sometimes be difficult to accept, but it is important to stop and think about where we are and where we are going.
- In pressure technologies, change has varied from limited in some instances to almost beyond comprehension in others.
- One of the main drivers of change has been in the field of data processing.
Published as: 25 years of pressure calibration
By R McLeman, Blanes Pressure Solutions
Electricity+Control, November 2011 (pgs 72 – 74)