Instruments quality and sophistication has become better as these instruments are continuously being built for the same purposes with better calibrations and measurement capabilities. With ever increasing accuracies and reliabilities it makes one bewilder that how can these instruments ever keep on improving and what makes the newer version of any master piece of instrumentation engineering being put in place by instrument engineers better then its predecessor model or instrument built for the same purpose.
The main factor behind these improvements is the industrial measurement and control processes feedback that is ever coming in from the different industries to buzz the ears of the instrumental engineers by whispering the inaccuracies, inefficiencies, unreliability, inabilities to perform to the desired and expected levels of performances.
Instrumentation engineers make sure that they gather the information from the correct sources like the staff and line managers and engineers directly involved in the electrical commissioning. An instrumentation engineer has a lot of responsibility in deciding about which feedback to pursue and how to pursue it. The instrumentation engineer is the one who after collecting the feed back patiently and painstakingly evaluates and analyzes the weakness discovered in the older models and tries to overcome these in the newer models built for that same purpose. That is how we get new instruments with improved qualities and that is how old versions are superseded and replaced with newer better versions.