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Process instrumentation for the beverage industry

With the ever more stringent regulatory standards required of manufacturers’, process instrumentation for the beverage industry needs to be increasingly more reliable, accurate and of high quality.  Instrotech, local representative of Rototherm technology for process instrumentation in the beverage industry has three products which meet these stringent requirements.  VesselCheck, DensiCheck and CarboCheck are Canongate products that have found application in most of the leading beverage organisations’ plants worldwide, in the following applications:

Bright Beer level measurement

VesselCheck is a highly accurate, truly non-invasive liquid level system based on unique ultrasonic technology - ideally suited for level detection of bright beer –comprising a signal processing unit and ultrasonic transceivers.  Ultrasonic sensors are clamped or bonded to the outside walls of the vessel; one on the bottom of the vessel and one on the side, with the fully density compensated option. Signals from the transducers are fed into the processor and either displayed locally, if that option is selected, or output to a separate system. The system calculates the height and volume of the liquid in the tank, from the time taken for the signal to be received from the liquid surface. 

Concentration monitoring

DensiCheck can be used to measure the Alcohol, Plato or SG concentrations in bright beer.   DensiCheck can also be used to measure the concentration of cold, hot and boiling wort in the brewhouse.  For blending applications where a higher degree of accuracy is required in the concentration measurement, a signal from a densitomer may be combined with DensiCheck measurement to achieve this.  

DensiCheck TX uses the established principal that sound velocity in a liquid is related to its concentration. Ultrasound pulses are transmitted through the liquid and reflected to their source. The time of transmission is measured using advanced high speed electronics, and the variation is converted by the on-board microprocessor to a signal representing the liquid concentration.  Temperature is automatically compensated for by an integral sensor, and the resulting value is transmitted via an analogue or digital signal to a suitable display or host controller.

 Carbon Dioxide Monitoring

CarboCheck is used in the brewing industry to measure and control the level of CO2 in a bright beer stream, uses the saturation pressure / temperature technique for accurate, non-sampling measurement.  CarboCheck can be used for measurement alone or configured as a control system.  The CarboCheck sensor features a silicone rubber membrane, through which the dissolved CO2 permeates into a sealed, evacuated chamber. The partial pressure of the gas is then measured and displayed by the analyser / control unit as a CO2 content.  The system incorporates a vacuum exhauster to regularly evacuate the sensor, providing continual, accurate measurement of dissolved CO2. The analyser / control unit can be linked to a carbonation system to enable fully integrated CO2 measurement, injection and control.



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