The Alcohol Monitor is an inline alcohol measurement system for determining the alcohol content (ethanol) during ongoing processes. Depending on the model, the system utilizes either RHOTEC (density measurement) or SONATEC (sound velocity measurement) . It is designed for applications requiring high sensitivity and high measurement accuracy .
 

 
 Application
 The Alcohol Monitor allows the measurement of alcohol (ethanol) in mixtures of water and ethanol . Alcohol measurement is performed during the production of beer and beer-based mixed drinks .
 

 
 Measurement principle (depending on the version)
 
 
 
 RHOTEC – Density measurement
 The product flows through a thin, U-shaped tube inside the sensor. Electromagnets excite the tube to oscillate at its resonant frequency . An internal reference oscillator detects the oscillation behavior. Even the smallest changes in density affect the signal and are precisely detected.
 
 
 SONATEC – Sound velocity measurement
 A piezoelectric element in the ultrasonic transmitter generates a sound pulse. This pulse travels perpendicular to the product flow to the ultrasonic receiver, where it is detected. The sound velocity is determined from the known distance and the measured travel time.
 
 

 
 Evaluation (concentration reference)
 The relationship between concentration and density , or sound velocity, is described by a mathematical polynomial . Centec utilizes decades of experience and its own laboratory facilities for a large number of products.
 

 
 Temperature compensation
 Temperature drifts of the measurement signal are automatically compensated by an internal Pt1000 sensor .
 

 
 Highlights
 
 
 
 High-precision measurement technology for determining alcohol in the manufacturing process
 
 
 Patented compact design, local display available (depending on version)
 
 
 Hygienic design and full CIP capability
 
 
 Straightforward to operate and designed for low maintenance
 
 
 European patent application: 1 439 438 B1
 
 

 
 contact
 For project-specific selection of the measurement variant, integration and a quotation, please use the contact form at the bottom of the page.
 

 
 Modular design & extensions
 Alcohol-Brix Monitor – Alcohol & Brix inline
 Beer Monitor – Alcohol, Extract & Original Gravity
 RHOTEC – Density measurement (basic technology, depending on the version)
 SONATEC – Sound velocity measurement (basic technology, depending on the version)