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Volumetric Controls

Our volumetric controller is designed to provide variable airflow volume control and ensure the safety of users working with industrial and educational fume cupboards and fume hoods.


The Volumetric controller utilizes a bell mouth type venturi restrictor to accurately measure the extract volume of the fume cupboard and provides VAV control based on either sash position, programmable fixed set points or 0-10VDC analogue input.
The controller can also operate using 3rd party orifice plates or other manufactured restrictor devices.

Product Benefits

Energy savings

The TEL Volumetric Controller reduces the volume of air taken from the fume cupboard when it is not being used, reducing energy usage by up to 85%, considerably reducing costs.

Safety and compliance

Protecting your staff from potentially hazardous fumes and substances and ensuring you stay compliant.

Carbon emissions

With many organisations having to meet carbon reduction targets, TEL’s Volumetric controller reduces energy wastage, ensuring reductions in carbon emissions.

Auto sash controllers have advanced significantly in recent years but TEL still leads the field...

We have a video showing how the TEL Auto Sash Controller integrates with VAV systems for safe airflow and energy savings of up to 85%.

Latest Articles

People working with industrial and educational fumehoods must be protected at all times. Auto sash controllers keep people safe.

Today’s safe and efficient laboratories are a given, but fume hood health and safety standards were only introduced 25 years ago…

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