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At UC Bekeley we have had experience with Zellweger tape-based
systems. We chose their system because a tape-based system does not
require the same level of annual service to verify and calibrate
each individual gas detector as chemical sensors.<br>
<br>
Having said this, we did not choose Zellweger for our new NanoLab. I
found them slow in their response, expensive and not willing to
support legacy systems. I believe Honeywell acquired or reps.
Zellweger but have not had recent interactions with them. <br>
<br>
Bob Hamilton <br>
<br>
<pre class="moz-signature" cols="60">--
Robert M. Hamilton
University of CA at Berkeley
Rm 520 Sutardja Dai Hall
Berkeley, CA 94720-1754
<a class="moz-txt-link-abbreviated" href="mailto:bob@eecs.berkeley.edu">bob@eecs.berkeley.edu</a>
(e-mail preferred)
510-809-8600
510-325-7557 (My personal cell)</pre>
<br>
<br>
On 1/31/2011 7:49 AM, Mac Hathaway wrote:
<blockquote cite="mid:4D46DA13.10903@cns.fas.harvard.edu"
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Hey there, Floyd,<br>
<br>
This is Mac Hathaway, from Harvard Center for Nanoscale Systems.
At
CNS, We use MST and Midas sensors (Honeywell), which both seem to
work
pretty well. The MST has a sensor cartridge right at the
monitoring
point, and the Midas can do remote sensing, i.e. the sensor can be
some
distance from the monitored point, drawing a continuous gas sample
via
poly or teflon tube, up to ~100 ft away depending on the gas.<br>
<br>
There is another group that is breaking in, some guys from
Zellweger
(used to be MDA, old makers of Chemcassettes). They are called
DOD
Technologies.<br>
<br>
Our sensor guys, EERC out of Rochester, NY are quite good, and
would
happy to help you spec out your new sensors, or even help you put
a new
system together. They helped us with our initial setup, and are
currently doing the bump tests several times a year.<br>
<br>
Mac Hathaway<br>
Harvard CNS<br>
<br>
<br>
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<br>
<br>
<pre class="moz-signature" cols="60">--
Robert M. Hamilton
University of CA at Berkeley
Rm 520 Sutardja Dai Hall
Berkeley, CA 94720-1754
<a class="moz-txt-link-abbreviated" href="mailto:bob@eecs.berkeley.edu">bob@eecs.berkeley.edu</a>
(e-mail preferred)
510-809-8600
510-325-7557 (My personal cell)
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