Development of a small in-situ conductivity instrument

The initial development and testing of a small in-situ conductivity instrument was reported at OCEAN ´73 [1]. Since then, extensive operational experience has been obtained with a number of these instruments on moorings and on free and tethered platforms that move vertically and horizontally. This experience is reported here; as well as design improvements, and calibration and maintenance procedures. Also discussed are cell-flushing characteristics and the problems of matching conductivity measurements spatially and temporally to temperature measurements.