[3dem] Oxygen sensor synopsis

[Bob Grassucci]

Hi All,
    Below are the replies that I received concerning the Oxygen 
sensors.  I  am leaning towards a couple of hand held units that a user 
can clip in their belt or place where they are working.  Thanks to 
everyone who replied.
    Regards,
    Bob


NYSBC

> We do not use wall mounted sensors due to the false alarm annoyance
> factor.  We order our sensors from Grainger part number 2YA41.


Cal Davis
> We have these GasMan-II devices, see 
> http://www.ceainstr.com/pdf_datasheets/gasman2_Info.pdf These are 
> portable devices with a digital display of the oxygen concentration. 
> They are about the size of a calculator, powered by three AA 
> batteries. They cost $614 per device, with about 12 months of life 
> time of the oxygen sensor, and $110 replacement costs for the Oxygen 
> sensor alone. 

Manchester, UK
Photo shows a Crowcon TXgard-IS Oxygen gas detector with a RGD90 
sensor.  This is a wall mounted unit.  They report no false alarms.


UVM

> Here is the info about ours. Its a hand-held, Industrial Scientific T32. On the
> back it says model number T82. We bought it from Airgas East. The battery is
> "Technician replaceble only", which means that one needs allen wrenches to open
> the housing. When opening, some connections also get disconnected. The battery
> life is not very long, it goes often out of callibration with the result that it
> allways sounds -> with the result that it is switched off and nobody uses it. 




-- 
********************************

-Robert Grassucci-
Howard Hughes Medical Institute
Wadsworth Center Empire State Plaza
Albany, NY 12201-0509
bobg at wadsworth.org
Phone: (518)474-5821
Fax: (518)486-2191




IMPORTANT NOTICE: This e-mail and any attachments may contain
confidential or sensitive information which is, or may be, legally
privileged or otherwise protected by law from further disclosure.  It
is intended only for the addressee.  If you received this in error or
from someone who was not authorized to send it to you, please do not
distribute, copy or use it or any attachments.  Please notify the
sender immediately by reply e-mail and delete this from your
system. Thank you for your cooperation.