Hydro-Check Systems, of Carlsbad, Calif., introduces the 414 Conductivity Monitor-Controllers. The 414 features automatic range selection spanning four ranges to deliver optimum accuracy, resolution and application versatility. Utilizing only one sensor, the model 414C autoranges to 10,000 mu-S, and the model 414TDS to 5,000 ppm. Water temperature may be checked in degrees C and degrees F. The instruments also feature a controller with adjustable time delay and high/low setpoint operation.