RHOTEC  online concentration and density meter

The Principle

RHOTEC continuously measures the density of liquids. Designed for applications that require maximum sensitivity and high accuracy, this device is used in various industries all around the world. Breweries and beverage manufacturers determine alcohol or dissolved sugar contents inline with RHOTEC. Dairies rely on RHOTEC to measure milk and cream fat. In numerous pharmaceutical and chemical applications RHOTEC is used to control the concentration of acids, caustics and other solutions – but also for monitoring the quality of raw materials and final products. For density measurement, the liquid flows through a U-shaped tube. While the tube is electronically excited to oscillate at resonance, the oscillation frequency is observed. Any change in the fluid density has an impact on the detected signal and can thus be identified. As a specific property of each liquid, the correlation between concentration and density can be described by a mathematical polynomial. With decades of experience and own laboratory facilities, we have a particular knowledge of the polynomials for a huge number of products. Any temperature drifts of the measured signal are automatically compensated for by an internal Pt1000 sensor. RHOTEC displays various units, e.g. vol.%, mass %, °Brix and °Plato.

Characteristic

·Available as Transmitter Version with Local Display and as Sensor 

· Highly Precise and Fast Determination of the Concentration 

· Based on Density Measurement 

· Applicable for a Huge Number of Liquids in Various Industries 

· Short Response Time and Excellent Long-Term Stability 

· Hygienic Execution, Full CIP Capability and Maintenance Free 

· Outstanding Price-Performance-Ratio

Technical Data                 

 RHOTEC

Measuring Range                                              0 - 3 g/cm3

Accuracy                                                            ± 0,0001 g/cm3 Repeatability ± 0,00001 g/cm3

Response Time                                                ≤ 1 s

Pressure of Operation                                    max. 50 bar

Temperature of Operation                             - 25 - + 125 °C

Temperature Compensation                         Pt1000

Material                                                               1.4571/AISI 316Ti;Hastelloy C276; Monel 400; 

                                                                               Incoloy 825; Tantalum; others on request

Connections                                                       thread 3/8”; compatible to Varivent© Inline-Housings DN40 - DN150;                                                                                 others 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                                   option 

Version Sensor (w/o local display)                 standard

Enclosure Rating                                                 IP65    

Explosion Protection                                         option

Ex II 2G EEx d IIC T6     

Power Supply                                                       24 VDC