A Breath Alcohol Tester, also known as Breath Analyzer, is an electronic device often used by law enforcement organizations to estimate a drivers alcohol consumption level. A blood alcohol test is the ...

Over time, the performance of optical isolators or sensors can degrade. But a simple auto-calibration circuit will account for changes in LED and sensor characteristics to keep optical devices running ...

THERE is no better way to ruin a perfectly good day than to make a mistake in the use of your air monitoring instrumentation. Industrial hygienists; military, industrial and public-sector hazmat teams ...

Sensor manufacturers typically calibrate the devices in the factory to achieve highly accurate outputs, but all sensors experience some offset error once they are in ...