Abstract |
A monitor for recording various parameters indicative of water quality was designed, constructed, and field tested. Thsi water quality monitor was built to meet the requirements of complete portability; operation where no line power is available; long-term unattended operation; monitoring capability for 4 to 8 parameters; using off-the-shelf equipment where possible for minimum construction cost; and computer compatibility of data readout. During the latter portion of the work, the state of the art of integrated circuits advanced appreciably with an attendant decrease in cost of operational amplifiers and other electronic functional components. |