These faults have been largely overcome in the new design. Hysteresis from pressure cycling remains a factor below 1000 meters. The new sensor is always ready for immediate use. Previous sensors required several minutes to polarize following power-up. During that time, sensor readings were inaccurate.
Signal resolution is increased by on-board temperature compensation.
And because there is no temperature output signal, a CTD channel is made available for other purposes. Even when oxygen concentration is constant, the normal range of ocean temperatures causes the output of earlier sensors to vary by a factor of two. A 5-year warranty backs the sensor s integrity.