The Brix Monitor is an inline instrument for determining the sugar content (°Brix) during ongoing processes. Depending on the model, the system utilizes the functionality of RHOTEC (density measurement) or SONATEC (sound velocity measurement) . Designed for applications requiring high sensitivity and high measurement accuracy , it is straightforward to operate and designed for low maintenance .
 

 
 Application
 The Brix Monitor is a variant of RHOTEC or SONATEC and allows the measurement of sugar content:
 
 
 
 in the syrup used in production
 
 
 in the finished drink
 
 

 
 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 generates a sound pulse in the ultrasonic transmitter. This pulse travels perpendicular to the product flow to the 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 many years of experience and its own laboratory facilities, providing polynomial data for a large number of products.
 

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

 
 Highlights
 
 
 
 High-precision measurement technology for determining °Brix 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
 
 

 
 Technical data
 
 Measuring range: 0 – 80 °Brix
 
 RHOTEC accuracy: ± 0.03 °Brix
 
 SONATEC accuracy: ± 0.07 °Brix
 
 Measuring temperature range: -5 – 80 °C
 
 Response time: ≤ 1 s
 
 Operating pressure: max. 16 bar
 
 Operating temperature: -25 – +125 °C
 
 Temperature sensor: Pt1000
 
 Material: 1.4404/1.4435/AISI 316L; Hastelloy; tantalum; others on request
 
 Connections: compatible with Varivent© inline housings DN40 – DN150; others available on request
 
 Input (transmitter version): 6 x digital (24 VDC)
 
 Output (transmitter version): 3 x digital (24 VDC) & 2 x analog (4 – 20 mA)
 
 Profibus DP (transmitter version): Option
 
 Profibus DP (sensor, without local display): Standard
 
 Protection rating: IP65
 
 Power supply: 24 VDC
 

 
 contact
 For project-specific design, integration into your line and a quote, please use the contact form at the bottom of the page.
 

 
 Modular design & extensions
 Oechsle Monitor – Inline Oechsle measurement (wine/cider)
 Alcohol-Brix Monitor – Alcohol & Brix inline
 RHOTEC – Density & Concentration (basic technology, depending on the version)
 SONATEC – Sound & Concentration (basic technology, depending on the version)