All disposables need re-calibration. What has been tried and proved to be
reliable are oxygen detectors based on ZD21 - zirconium diode. They last
forever - strictly speaking more than 10 years - w/o any calibration.
On Tue, Sep 23, 2014 at 8:16 AM, Plant,Daniel <dan_at_mbi.ufl.edu> wrote:
> We’ve tried every type over the years.
>
>
>
> What I prefer now is a disposable personal one for each cryotech.
>
> Around $200 and they last 2 years.
>
> Little yellow badge size that clips to your collar and beeps when the O2
> goes below 19.5%
>
>
>
> *From:* Clewett, Catherine [mailto:cclewett_at_mail.wtamu.edu]
> *Sent:* Monday, September 22, 2014 11:11 AM
> *To:* ammrl_at_ammrl.org
> *Subject:* AMMRL: Oxygen Monitors
>
>
>
> Ammrl folks:
>
>
>
> Does anyone have suggestions for rugged, inexpensive oxygen monitors? We
> will be installing an NMR magnet in a room with only one exit and no
> natural ventilation, so we thought it would be a good idea. What should I
> look for when purchasing one?
>
>
>
> Thanks
>
>
>
> Catherine F.M. Clewett, Ph.D.
>
> Assistant Professor of Physics
>
> Department of Mathematics, Chemistry and Physics
>
> WTAMU Box 60787
>
> Canyon, TX 79016-0001
>
> Phone: 806-651-2545
>
> Fax: 806-651-2544
>
> Email: cclewett_at_wtamu.edu
>
>
>
Received on Tue Sep 23 2014 - 09:50:35 MST