Ultrasonic Doppler flow-meter for liquids Thermo Scientific Process Systems
The Thermo Scientific SX40 flowmeter combines dedicated, dual frequency Doppler (DFD) technology with a patented digital signal processing technique to accurately determine the flow of liquids that contain particulates or air bubbles. By correlating two independent ultrasonic signals at different frequencies, it is able to automatically identify and eliminate noise errors from sources such as variable frequency drives. The SX40 incorporates clamp-on sensors which are easily installed for sludge management in sewage treatment plants and industrial applications, including slurry and effluent monitoring. Its large backlit graphics display provides excellent visibility even in poorly lit environments and it can be easily commissioned in a fraction of the time necessary to configure competitive models. Outputs include a 12-bit, optically isolated 4-20 mA analog signal and up to four independent programmable relays. It is available with a contact closure that helps to eliminate unwanted or erroneous flow volume data when backflow conditions occur. The instrument also offers a powerful 90,000 point data logger with non-volatile memory, enabling users to avoid the additional expense of a chart recorder or external data logger.
