An investment into calibration equipment and systems must be financially justified, just like any other business investment. But does a cheaper cost of purchase always mean a higher return on investment? Not necessarily. When building a business case for calibration calibration system investment, what may seem at the outset to be cheaper may not necessarily be so, if the evaluation is made from total or life cycle cost perspective instead of evaluating cost of purchase only.
One of the questions we get asked most frequently is how often a customer should calibrate his instruments. Unfortunately there is no straight answer to this, at least not one that would always be correct. Instead there is a list of variables that should be taken into account when deciding the calibration period for any measurement device. Let’s take a quick look at these variables.
As many as every fourth company in the process industry is at the moment considering to make some kind of update to its calibration process and systems. I admit, the number sounds quite high, but it is based on a specific study we recently made with the International Society of Automation (www.isa.org) concerning calibration process changes.
We often get asked questions regarding the calibration of a pressure switch.
Since we didn’t have any videos on the topic on our YouTube channel, our dynamic duo from our US office, Roy and Ned, decided to make one.
In this blog post we’ll continue to talk about another fundamental topic:
Why should you calibrate?
It is good to remember the old rule: “All measurement devices measure wrong, and calibration tells how wrong they are.”
As this is a calibration blog, I will begin with writing a short post on a very fundamental thing – what is calibration? But how can I explain shortly what calibration is?