HOW TO BUY DATA ACQUISITION EQUIPMENT.

The improved efficiency that a computer-based data acquisition system (DAS) often provides usually pays for the computer, cabling, and input/output (I/O) devices. Savings result from an increase in yield, throughput, and product quality, and a reduction in time spent on task, in energy use, and in machinery downtime. Today, there is a choice between complete, integrated DAS and personal computer based systems, built from personal computer compatible data acquisition add-ons. The entry of personal computers into the DAS marketplace has increased the capability of lower priced systems. But price alone can be misleading. Both purchase price and long-term costs must be examined before an informed decision can be made. This article looks at the major factors to consider when buying DAS equipment.