Accurate flow measurement of corrosive fluids

Titan Enterprises reports how its Metraflow ultrasonic flowmeter has been selected by a leading fluid metering and water treatment company to accurately measure chemical disinfection dosing using sodium hypochlorite.

Sodium hypochlorite (NaOCl) is a highly corrosive liquid commonly used as an oxidising and bleaching agent and as a disinfectant. These properties challenge component parts used in most flowmeters.

Neil Hannay, senior development engineer at Titan Enterprises commented "Our customer chose the Metraflow because its clean bore design is based upon a chemically resistant Perfluoralkoxy Alkane (PFA) tube onto which are mounted high sensitivity ultrasonic sensors. The excellent chemical stability of the single PFA flow tube, coupled with the lack of any connections or seals within the flowmeter itself, enable prolonged accurate flow measurement of corrosive fluids".

The Metraflow ultrasonic flowmeter was designed for customers tasked with applications that pose fluid compatibility challenges. Using patented ultrasonic technology, the MetraFlow is able to reliably operate with excellent accuracy across very wide flow ranges (0.002–20 L/min) with excellent turndown (>200:1), repeatability (+/–0.5%), linearity and a reading accuracy of better than +/–1.0%.

Each Metraflow ultrasonic flowmeter comes as standard with an LCD display and three customer configurable digital input/output options and an analogue output. Flexible interface software allows you to configure the Metraflow flowmeter as required via a USB port, giving great flexibility to optimize the device for integration within a wider chemical production operating plant.