PLATO MONITOR
PLATO MONITOR
The PLATO MONITOR is a special version of the SONATEC and continuously measures the speed of sound through the product. The instrument is designed for applications requiring maximum sensitivity and the highest accuracy. It is easy to use and maintenance-free. To measure the speed of sound, a sound pulse is generated by a piezoelectric element in an ultrasonic transmitter. It travels perpendicular to the product flow towards an ultrasonic receiver, where it is detected. Since the distance between the transmitter and receiver is known, the speed of sound can be easily determined by measuring the time it takes the sound signal to travel. As a specific property of each liquid, the relationship between concentration and speed of sound can be described by a mathematical polynomial. With decades of experience and our own laboratory facilities, Centec knows the polynomials for a large number of products. Temperature drift of the measurement signal is automatically compensated for by an internal Pt1000 sensor.
European patent application: 1 439 438 B1
- Most accurate technology for determining original gravity in the manufacturing process
- Patented compact design with local display available
- Hygienic design and full CIP capability
- Easy to use and maintenance-free
Application:
The PLATO MONITOR is a variant of the SONATEC and allows the original gravity of beer to be measured during the brewing process. The original gravity is typically determined during beer filtration and before filling.
Technical data:
Measuring range 0 - 25 °Plato accuracy ± 0.05 °Plato Measuring temperature range -3 to +25 °C response time ≤ 1 s Operating pressure max. 16 bar Medium temperature -25 to +125 °C temperature sensor Pt1000 material 1.4404/1.4435/AISI 316L; Hastelloy; Tantalum; others on request Connections Varivent© DN65; dairy pipe fitting DIN11851 DN65; 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 class IP65 power supply 24 VDC