Date: Wed, 15 Jul 2009 22:04:18 -0400
Reply-To: Peter Zavon <pzavon**At_Symbol_Here**ROCHESTER.RR.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Peter Zavon <pzavon**At_Symbol_Here**ROCHESTER.RR.COM>
Subject: Re: Air Flow Monitors for fume hoods
In-Reply-To: <ef26f8106e3d2.6e3d2ef26f810**At_Symbol_Here**>
I suppose the simplest flow monitor is a manometer connected as a static
pressure indicator to a straight length of exhaust duct and mounted on the
face of the hood, and calibrated once or twice per year against a face
velocity measurement.

It is always a good idea to have an air flow indicator on a chemical fume
hood in a location that can readily be seen by the hood user.  Whether it is
a legal requirement or not apparently depends on whether you are in

Peter Zavon, CIH
Penfield, NY


> -----Original Message-----
> From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**] 
> On Behalf Of Mary Ellen A Scott
> Sent: Wednesday, July 15, 2009 4:42 PM
> To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
> Subject: [DCHAS-L] Air Flow Monitors for fume hoods
> Does anyone have an inexpensive solution for adding an air 
> flow monitor to older fume hoods?  Is it now law that every 
> fume hood (old and new) have one?
> Thanks

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