I have a client that has a magnetic flowmeter with erratic readings. Recent system changes (move NaOH feed point to upstream of meter) is causing low flow readings. Testing included monitoring flowmeter without chemical and starting chemical feed with as much as a 30 percent drop in flowmeter value. Dosage rate approx. 40 ppm (50 percent concentration of sodium hydroxide fed at 2.8 gallons per 36000 gallons). My first reaction was electrical property of the NaOH affecting the field readings of the meter and then a concern over grounding of the meter to eliminate any stray voltages. Anyone with past experience of similar problems adding NaOH ahead on magnetic flowmeter?
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. Download Now
With industries becoming more automated, more tech-driven and more complex, engineers need to keep their skills and knowledge up to date in order to stay on top of this wave—and to be prepared for the Industry 4.0 future. The University of Cincinnati offers two online Master of Engineering degree programs designed specifically for practicing engineers. Download Now
In this eBook, you’ll learn 6 ways old CAD technology slows your company down and hear how design teams have put those problems to rest. “The Design Gridlock Manifesto” shares first-hand modern CAD experiences from 15 companies around the world. Download Now