Abstract :
Many instruments measuring environmental pollutants such as SO2, NOx, etc., have an analog data output for strip-chart recording. Data analysis and retrieval is tedious. SMART-I and CLEVER COUNTER accept, data from these analog instruments and provide computer-compatible digital data storage. These microprocessor-based data logging instruments contain a time-of-year clock, six-decade counters, timers, and a serial communications interface. The CLEVER COUNTER consists of four counters, each with its own timer, while SMART-I consists of twelve counters, a common timer, and a computer-compatible magnetic recorder. The four channel unit stores SO2, NO, and NOx data, while the twelve channel unit handles the concurrent twelve channels of meteorological data at our regional monitoring site.
