Density, Sound Velocity and Concentration in 3-Component Systems
 
COMBITEC simultaneously measures density and sound velocity in liquid 3-component systems and determines concentrations from these values. Documented applications include acid and salt in water, sulphuric acid / oleum and methanol / formaldehyde.
 
Measuring Principle
 
COMBITEC measures density and sound velocity simultaneously. Density measurement is based on the oscillating U-tube principle. For sound velocity measurement, a sound pulse is generated and detected by an ultrasonic receiver.
 
Applications
 
 
 
Acid and Salt in Water
 
 
Sulphuric Acid / Oleum
 
 
Methanol / Formaldehyde
 
 
3-Component Systems
 
 
Density
 
 
Sound Velocity
 
 
Concentration
 
 
Process Monitoring
 
 
Temperature drift of the measurement signal is automatically compensated. European patent application: 1 439 438 B1.
 
Technical Data
 
Density / Measuring Range and Accuracy: 0 - 3 g/cm³ / ± 0,0001 g/cm³
 
Sound Velocity / Measuring Range and Accuracy: 400 - 3.000 m/s / ± 0,05 m/s
 
Response Time: ≤ 1 s
 
Operating Pressure: max. 16 bar
 
Operating Temperature / Temperature Sensor: -25 to +125 °C / Pt1000
 
Material: 1.4404 / 1.4435 / AISI 316L; Hastelloy; tantalum; others on request
 
Input: 1 x analog (4 - 20 mA) & 6 x digital (24 VDC)
 
Output / Fieldbus: 2 x analog (4 - 20 mA) & 3 x digital (24 VDC)
optional: PROFIBUS DP & PROFINET
 
Enclosure Rating: IP65
 
Power Supply: 24 VDC
 
Three Measured Variables: Density, sound velocity and concentration.
 
Display at the Measuring Point: Depending on the version, the measured value can be read directly at the sensor.
 
Hygienic Design: Various materials and flange connections.
 
Modular Design & Extensions
 
RHOTEC – Density & Concentration
 
SONATEC – Ultrasonic Measurement & Concentration
 
BEER MONITOR – Alcohol, Extract & Original Gravity
 
Sensors & Measurement Technology