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Metering flow across a wide range of flows in disposable single use apparatus

IP.com Disclosure Number: IPCOM000244904D
Publication Date: 2016-Jan-28
Document File: 2 page(s) / 106K

Publishing Venue

The IP.com Prior Art Database

Abstract

Many low cost Single‐Use (SU) liquid flow meters have a limited operating range, typically smaller than the operating range needed. This publication records that it has been found that two or more flow meters arranged in parallel via a manifold can be selected for sensing depending on the amount of flow, or the range of flow to be measured. A flow meter most suitable for the flow can be selected, thereby collectively covering a wider range of flows. Selection can be manual, for example by opening or closing manually operable valve, or automatic, for example by operating electrically operable valves.

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Metering flow across a wide range of flows in disposable single use 

apparatus 

Many low cost Single‐Use (SU) liquid flow meters have a limited operating range, typically  smaller than the operating range needed.  

This publication records that it has been found that two or more flow meters arranged in  parallel via a manifold can be selected for sensing depending on the amount of flow, or the  range of flow to be measured. A flow meter most suitable for the flow can be selected,  thereby collectively covering  a wider range of flows.  Selection can be manual, for example  by opening or closing manually operable valve, or automatic, for example by operating  electrically operable valves.  

Example: 

          

The left hand diagram shows schematically the output 10 from the retainate side of a  tangential flow filtration  module, or the like, which can have a high flow or a lower flow  flowing in the direction of the arrow. Electrically operable rotary or solenoid valves 12 are  used to direct that flow either along a wider path for higher flows, or a narrower path for  lower flows. In the wider path is a ultrasonic clamp‐on flow meter 16 which is capable of  measuring the flow range in that path. In the narrower path is another flow meter ...