Flow measurement with ultrasound fast, precise, free from contamination

SonicLine^® ultrasound technology, functions according to the phase differential method. This technology offers the capability to measure the flow volume accurately, yet externally, without touching the medium. There are no moving parts or instruments in contact with the media itself, minimizing pressure loss and eliminating particle contamination of the flow medium. The device offers a low maintenance alternative, except for the periodic visual inspection. This design can be used for both high purity and non-conductive media. These are just some of the advantages over conventional measuring instruments such as differential pressure metering orifices, vortex flowmeters with baffles, turbines and toothed wheel flowmeters and magnetic-inductive flowmeters (MID).

The ultra-fast detection speed of 250 values/second is a great advantage in dosing tasks. Fast changes and fluctuations in the flow speed are registered and processed immediately. In systems with quick-closing/regulating valves and short controlled lines, very precise and short dosing processes can be implemented. The device is also equipped with a sum function for batching processes. Another advantage with regard to rapidly repeating processes, is the high reproducibility of the measured values of 0.5% as well as the high accuracy of 1% of the measured value.

SonicLine is also suitable for process monitoring and control in very dynamic flow situations with fixed flow volumes that need to be regulated quickly. Exact information of the media quantities used, is just as important as leak monitoring and the monitoring of two set limit values.

All medium-wetted parts are made of corrosion resistant high purity fluoro-polymer PFA-HP (perfluoralkoxy). The electronics housing is made of PP (polypropylene) or PTFE. The devices can be used for most chemicals including highly aggressive hydrofluoric acid. SonicLine® is particularly suitable as the “High Purity” version and is manufactured under clean room conditions. Applications include high purity chemicals and solvents in the semiconductor and solar industry, analytical and medical equipment as well as the biotechnology and pharmaceutical industries. The device meets critical the high purity standards as well as the associated leach-out tests of the semiconductor industry.

The flowmeters, currently available in fine thread flare connections in nominal sizes ¼“, 3/8“, ¾“ and 1“. The measuring range is between 0.2 – 6 (12) l/min for 3/8“ and 1.2 - 120 l/min for the 1“ version. They are integrated easily in pipes and tubing systems. The flowmeters are pre-calibrated at the factory with water at 20°C. Recalibration on site is only necessary when the operating media deviate clearly from these parameters. The appropriate programming software and a hardware adapter are also supplied. SonicLine^® flowmeters have analog output options of 0-20 mA, 4-20 mA or 0-10 V. Two “Open Collectors” (NPN) or optionally a bus connection are available as digital outputs. The connection voltage is 24V DC. An RS485 interface serves as a PC interface.

" 'Fit and forget'. With the SonicLine^®, this is not only an advertising slogan but also a reality”. According to Product Manager Burkhard Müller, “We have worked in close cooperation with owners and plant designers from the beginning of development and adapted all functions of the device to user requirements. We have placed special emphasis on two aspects in particular: SonicLine^® should be easy to install and come very close to the aim of freedom from maintenance as a Fit-and-forget solution."