Prosonic Flow - ultrasonic flow measurement range features an innovative sensor concept combined with proven transmitter technology. Mounting flexibility, economy and process safety are the unmistakable merits of clamp-on ultrasonic measurement. World-wide hazardous area approvals, digital communication, self-monitoring, as well as operator-guided commissioning are other distinguishing features demanded by industrial measurement today. Take advantage of the Endress+Hauser flow measurement know-how for your measurement tasks.

Flexibility through Measurement from the Outside
Prosonic flow is mounted directly on existing piping. Cutting into the pipe is not required. Mounting is carried out without the need to stop the process. Through non-intrusive measurement from the outside , the most aggressive and high pressure fluids can be measured without a problem.

The Economic advantages
Ultrasonic flow measurement pays for itself in the short and long term, since no additional costs are caused by mounting and operation:
- no wear of moving parts in the pipe
- no pressure loss
- no maintenance costs

Robust and Safe During Operation
The standard mounting sets and sensors are made of stainless steel. The robust IP 68 sensor housings can withstand the roughest environmental conditions.

Communication Interfaces
Prosonic Flow can be networked to higher level systems . The HART interface permits flowmeter configuration via either the HART handheld or the E+H "Commuwin ll" program operating on a PC.

Measuring Principle
Swimming against the flow requires more power and more time than swimming with the flow. Ultrasonic transit-time flow measurement is based on this simple physical fact.
Two sensors mounted on the pipe send and receive ultrasonic pulses simultaneously. At zero flow, both sensors receive the ultrasonic signals sent at the same time, i.e. without a transit-time difference. With a flowing fluid, the ultrasonic waves require differing lengths of time (flow dependent) to reach the correspondong sensor. This transit-time difference, measured by Prosonic Flow, is directly proportional to the flow velocity.