High accuracy for low flow rates

High accuracy for low flow rates

When adding chemicals to a potable water supply, sometimes the smallest amounts of a substance must be measured and added with a high degree of accuracy — whether in piping or in chemical reactors. The newly developed Promass A from Endress+Hauser measures such substances drop-for-drop with precision.

According to the maker, the Promass A offers durability and precisely measured values with high-end repeatability, even in cases where process and ambient conditions fluctuate significantly. All of this is thanks to an innovative sensor concept, which sets new standards in Coriolis measurement technology. The unit is light and compact, with no loss in performance or durability. The measuring device is therefore ideally suited for space-saving installation, for example in modular process facilities and skids.

The sensor system is mounted on a base plate that acts as a shock absorber, effectively shielding the Coriolis measurement from outside interference (e.g., from pipe vibrations). Other contributing factors are the oscillation frequency of the measuring tube, which is significantly higher than that of traditional Coriolis flowmeters, and its completely balanced oscillation behavior. At a specified maximum measured error of plus or minus 0.1 percent, high-precision measurements down to 8 g/min are possible, or if the maximum error is permitted to be plus or minus 1 percent, even a quantity of less than 1 g/min can be measured.

Thanks to the variety of device options, such as nominal diameter, material, process connection, certification, transmitter type, or degree of protection, it can be used in numerous applications. Thanks to its light and space-saving design, it can also be easily installed in extremely tight spaces, such as in skids. There are a multitude of process connections available, such as flanges, lap joint flanges, couplings, internal threads or tri-clamps. It can be used at process temperatures between 58 degrees below zero to 401 degrees F.

Proline 300/500 transmitters include a web server as a standard. Using a standard Ethernet cable and a laptop — or wireless over WLAN — users have direct access to all diagnostic, configuration, and device data without additional software or hardware. This enables targeted and time-saving maintenance and service. For reliable measurements and maximum operational safety, Heartbeat Technology enables permanent self-diagnostics with the highest diagnostic coverage (more than 95 percent), as well as a TÜV-tested, metrologically traceable device verification without process interruption. All of this reduces complexity and hazards in a plant and increases its reliability and availability. 888-363-7377; www.us.endress.com



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