Brix control using a contactless conductivity electrode

The installation of a new C sugar remelt tank at South Johnstone mill to return remelt directly to the syrup tank prompted a search fo a cheap method of brix control. At the same time, there was a need to control of brix of final molasses. The standard method of measuring density using a static leg and dP cell was considered too expensive, and proprietary systems based on conductivity also cost more than desired. With the help of the Sugar Research Institute (SRI), their contactless conductivity electrode was adapted to give adequate brix control in both applications at less than 20% of the cost of conventional methods.