AL-CARK Caustic Analyser

AL-CARK Caustic Analyser



Instrumentation, Installation & Measuring Technology

This refractometer sensor features include:

Measures density of the liquor phase of a slurry – independent of suspended solids or mud
Extensive after sales service
Real-time and accurate
In-line measurements
Measure alumina caustic ratio
Reliance on lab sampling for caustic and A/C control is greatly reduced
Operators can respond immediately to process disturbances and have near immediate feedback of changes initiated
Closed loop feed back control for caustic liquor dilution loops is absolutely achievable

The sensor:

Uses a digital CCD array to detect light bend angle (critical angle) in the liquid phase of a solution
This angle is directly proportional to the density of the liquid phase
Use no moving parts, pots or dials and as the measurement is digital and all parts are fixed, it is completely free from signal drift
Method of critical angle detection is also immune to the effects of bubbles, suspended solids (up to 90% suspended solids), colour, vibration, flow, temperature and viscosity
Is installed directly in the process piping or sidestream. We angle-mount the sensor to reduce the effects of erosion
We implement and maintain a flow velocity above 1.5 meters per second and we do not experience scaling on any installation.
Prism washing systems available for solids free or low velocity applications

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