---------- Forwarded message ----------
Date: Thu, 1 Aug 1996 10:23:52 -0400 (EDT)
From: Mark A. McConaughy <[log in to unmask]>
Newgroups: [log in to unmask]
Subject: Re: Hygrothermograph

Richard,

   I have switched from old hygrothermographs to Smartreader 2's
from ACR Systems, Inc.  These are small, about the size of a
cigarette pack, computer recorders that can take measurements
of temperature and humidity at various intervals set by the
user up to a 30 minute sampling interval.  They are downloaded
to IBM compatable computers using Smartreader Windows software
(called Trendreader for Windows) through a plugin wire that connects
to an RS232C 9 pin port (or 25 pin with an adapter).  There is no
ink or paper charts to mess with.  The software produces the graphs.
I love them.  We have 19 of them around the State Museum building.
The run around $720 each (and a remote can be attached for about
$150 more to take samples from inside and outside exhibit cases,
for example).

   There are other computer based samplers on the market.  I
can't speak for those, though.  However, I will not go back to
a typical hygrothermograph which I find isn't as sensitive to
variations as the Smartreaders.

Mark A. McConaughy, Ph.D.      [log in to unmask]
Section of Archaeology
The State Museum of Pennsylvania
Box 1026
Harrisburg, PA 17108-1026
(717) 783-2665

On Wed, 31 Jul 1996, Richard Waller wrote:

> We are opening new galleries this fall and must buy new recording
> hygrothermographs.  Currently, we are using Cole Palmer Model 8368-60.  In
> looking through various catalogues, there is a wide range in cost, from
> $600 to $2400.  I'm sure others have gone through this search.  Has anyone
> seen an article discussing the pros and cons of various instruments?  Any
> thoughts on the best "brand" (or brands to avoid), reasonable cost, and
> sources?
>
> Thanks,
>
> Richard Waller
> Director
> Marsh Art Gallery
> University of Richmond
> Richmond, VA 23173
> (804) 289-8276
> FAX (804) 287-6006
>