In days past, most current sensing designs followed only a few basic approaches. With the advancements in technology came a slew of measuring choices, making the selection process a bit more challenging. Should you choose Reflective light proximity sensors? Hall Effect sensors? How about one that uses Eddy current sensing?
Granted, for general applications, any type would likely yield satisfactory results. However, if you’re asking more from your devices, or if you have to work in extreme conditions, some options work better than others. That’s when you need to be concerned about the choices you make.
When choosing the appropriate sensor technology for your needs, the following factors will merit your consideration: accuracy, linearity, consistency, durability, stability, hysteresis, protection from interference, temperature range, limitations, power consumption, size, output signal, and of course, price.
Information for some of these factors are already indicated in the accompanying product manual of the devices, or can be obtained from the manufacturer or distributor. Some features, however, are difficult to specify, and may require further testing on your part to determine the product’s suitability. In any case, what’s important is that you purchase your products from a reliable dealer that only offers quality products and backs them up with adequate customer support.