Combitec SD

A Combined Sensor to Accurately Measure 
the Density and Concentration of Liquids
in Precision Process Applications

Highly reliable, Easy to clean, Accurate, Long life,
Very low maintenance requirement

Operating Principles:
Density: Electro-Magnetic Oscillation Monitoring
Density Measuring Range: 0 - 3 g/cm3    (Specific Gravity: 0 to 3)
Accuracy: +/- 0.0001 g/cm3, Reproducibility: 0.00001g/cm3

Concentration: Ultrasonic Velocity Measurement.
Sound Measuring Velocity: 400 - 3000 m/s,
Accuracy ± 0.05 m/s, Reproducibility ± 0.01 m/s.

Temperature Compensation: PT1000
Operating Temperature: -25°C - +125°C
Pressure range: max. 16 bar g.

Materials in product contact: 1.4404 (316L) s/steel, Hastelloy C276

Process connections: Varivent© Clamp - DN40 (1.5") - DN150 (6");
DIN, ANSI and others on request
Inputs and Outputs: Various analogue and digital I/O, incl. Profibus
Enclosure rating IP 65. Supply 24V DC,

The Combitec SD is a highly precise means of determining the Density and Sound Velocity of liquids, even under extreme process conditions. The density measurement is achieved through the use of an electromagnetic oscillating “U”-shaped tube. As the process medium flows through the “U”-shaped tube, the oscillation frequency is measured. The oscillation frequency is affected by any changes in density and measured accordingly.
Like density measurements, Sound Velocity is a material and concentration dependent quantity which can be used for determining the concentration of a liquid. The propagation time of a piezo-ceramic generated sound pulse is measured between the prongs of a fork shaped measuring head installed directly in the process. As this propagation time changes, the sound velocity and resulting concentration changes are measured.

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Combitec Sound & Density Sensor
United Kingdom
Sensors & Monitoring Equipment for Process Liquids and Gases
Protecnica Solutions Ltd
are UK distributor for
Centec GmbH

The information contained herein is for guidance only. It can change without notice and is not binding