Wastewater treatment plant engineers in search of an accurate, economical solution for air/gas flow measurement in aeration basins will find that Fluid Components International’s ST98 Thermal Mass Flow Meter when combined with the Vortab Model VIP Flow Conditioner provides high performance to minimize compressed air flow energy costs.
The flow meter features a no-moving parts thermal dispersion mass flow sensing element that provides excellent accuracy and reliability in harsh environments. It also includes an integral 2-way HART interface, which allows engineers to receive multiple process variables and configure the meter remotely from the safety of the control room.
The meter offers high accuracy to ±1% of reading, 0.5% of full scale. Repeatability is ±0.5% of reading. This insertion style flow meter can be installed without shutting down the process by using a simple NPT fitting. It operates over a wide flow range from 0.21 to 172 NMPS, and the turndown ratio is factory preset from 10:1 up to 100:1. It operates at pressures up to 17 bar (g).
The Vortab Insertion Panel (VIP) Flow Conditioner compensates for flow disturbances in wastewater treatment aeration basin compressed air piping systems. Flow disturbances are typically caused by elbows, valves and shorter than optimum upstream straight-pipe runs. Adequate pipe straight-runs upstream and downstream from the meter are necessary to ensure a smooth flow profile forproper measurement. Vortab VIP Flow Conditioners remove both swirl and distorted velocity flow profiles under challenging pipe layout conditions.
The VIP blends the proven performance and superior low pressure drop of Vortab tab-type flow conditioning technology with the low cost and ease-of-installation of an insertion panel type flow conditioner solution. Vortab technology greatly reduces pressure drop compared to alternative technologies such as tube bundles, screens and perforated plates, which helps minimize plant energy consumption and energy costs.
The standard Model VIP Flow Conditioner is manufactured of 316L stainless steel in sizes for installation in pipes from 50 to 999.9 mm. Other materials and larger line sizes are available upon request. They are available in both ANSI and DIN flange-mount or weld-in-place configurations. A typical VIP weighs less than 560 grams per diameter which means it is easily transported and installed on site without using special handling equipment.
Flow meter/conditioner
for waste water treatment
- by Fluid Components International
- March 25, 2011
- 50034 views