Specifications may sometimes be tricky to figure out. Comparing a product of one manufacturer to another may also prove difficult.
To help you, Vaisala have put together a document about understanding specifications including a set of questions to ask when choosing a measurement device.
The quality of a measurement device is often evaluated by a simple question: How accurate is the measurement? While this question seems simple enough, the answer may not always be. Choosing the most suitable measurement instrument requires an understanding of the factors that contribute to the uncertainty of a measurement. This in turn provides an understanding of what is stated in the specifications – and what is not.
The performance of a measurement is defined by its dynamics (measurement range, response time), accuracy (repeatability, precision, and sensitivity), and stability (tolerance for aging and harsh environments). Of these, accuracy is often considered to be the most important quality; it is also one of the most difficult to specify.
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Please contact us at Esis if you have questions about a measurement device.
