Application
The sensors are perfectly suited for the non-contact
measurement of pure or slightly contaminated liquids,
regardless of the pressure or electrical conductivity.
- Ideal solution for temporary use everywhere precise
measurement or verification is required
- Particularly suitable for retrofitting, monitoring
and verifying measuring points
- Suitable for pipe diameters
from DN 15 to 4000 (1⁄2 to 160")
- Suitable for fluid temperatures ranging
from –40 to +170 °C (–40 to +338 °F)
- Can be used with all metal and plastic pipes lined or
unlined and with composite pipes
- Ideal solution for all applications with soundconducting liquids, e.g. water, wastewater, oils,
solvents, acids, hydrocarbons and chemicals
Features and benefits
The Prosonic Flow ultrasonic clamp-on system allows
accurate and cost-effective flow measurement from
outside the pipe and without the need to interrupt the
process. The flow measurement is bidirectional and
causes no pressure loss.
- Easy, safe and menu-guided sensor mounting ensures
precise measuring results
- Easy and safe commissioning via Quick Setup menus
- Automatic frequency scan for optimized installation
and maximum measuring performance
- Current input for parallel data acquisition or for
verifying other devices
- Current output active or passive
- Remote configuration and measured value display
using Endress+Hauser's FieldCare software
- Integrated data logger/site manager
- Easy data transfer via USB stick without additional
software
Measuring principle
The measuring system operates on the principle of transit time difference. In this measurement method,
acoustic (ultrasonic) signals are transmitted between two sensors. The signals are sent in both directions,
i.e. the sensor in question works as both a sound transmitter and a sound receiver.
As the propagation velocity of the waves is less when the waves travel against the direction of flow than along
the direction of flow, a transit time difference occurs. This transit time difference is directly proportional to the
flow velocity.
The measuring system calculates the volume flow of the fluid from the measured transit time difference and
the pipe cross-sectional area. In addition to measuring the transit time difference, the system simultaneously
measures the sound velocity of the fluid. This additional measured variable can be used to distinguish different
fluids or as a measure of product quality.
The measuring device can be configured onsite to suit the specific application using Quick Setup menus.