Hi,
We use a handheld oxygen detector purchased from amazon. Product info
below:
Oxygen Detector by Forensics | USA NIST Calibration & Certificate | Dust &
Explosion Proof | USB Recharge | Sound, Light and Vibration Alarms | 0-30%
O2
Cost is ~$150.
They only last 1-2 years but obviously there's no need to hardwire.
Wendy
Wendy Breyer, Ph.D.
Director of Instrumentation
Dept of Chemistry
Lehigh University
On Tue, Aug 8, 2023 at 11:45 AM Cathy Clewett via groups.io <clewett=wisc.edu_at_groups.io> wrote:
> Hi Sarah;
>
> We have just replaced our old ones with Honeywell E3SA (P/N 1309A0042)
> which can be tied into remote network. They are hard wired in, but the
> sensors are easy to replace. Except for a bad batch of sensors, they seem
> to work reliably. If you have questions, I can set you with the person in
> Environmental Health & Safety who is in charge of them.
>
> --Cathy
>
> Catherine F. M. Clewett, Ph.D.
> Spectroscopist, Magnetic Resonance Facility
> University of Wisconsin Madison, Department of Chemistry
> 1101 University Ave Room 2201c, Madison, WI 53706
> clewett_at_wisc.edu, (608)262-8196,
> https://pbcic.chem.wisc.edu
>
> *From:* main_at_ammrl.groups.io <main_at_ammrl.groups.io> * On Behalf Of *Harker,Robert A
> *Sent:* Tuesday, August 8, 2023 10:34 AM
> *To:* main_at_ammrl.groups.io
> *Subject:* Re: [AMMRL] Oxygen sensor/monitor for NMR lab #Troubleshooting
>
> Sarah;
>
> We use the Pureair systems with 10 year sensors too. There are some
> drawbacks though:
>
> They are not hardwired into AC mains of the facility. They use a little
> power supply plugged into an AC power outlet which can add clutter. If you
> have or have access to someone with soldering skills, the power supply
> cable lengths can be modified without recalibration.
>
> The sensor is mounted on a length of cable which can not be extended
> without recalibration but you can order them to length. We did not, so we
> were limited with sensor placement.
>
> They were expensive.
>
> Good luck,
>
> Robert Harker
>
> Engineer
> University of Florida
> Dept. of Chemistry
> Center for Nuclear Magnetic Resonance Spectroscopy
> https://nmr.chem.ufl.edu/
> 125 Buckman Drive
> M/S 82
> box 117200
> Gainesville, Florida 32611-7200
> cell: 352-328-5862
> Ph. 352-392-4650
>
> *From:* main_at_ammrl.groups.io <main_at_ammrl.groups.io> *On Behalf Of *Sara> Cady via groups.io
> *Sent:* Monday, August 7, 2023 3:11 PM
> *To:* main_at_ammrl.groups.io
> *Subject:* [AMMRL] Oxygen sensor/monitor for NMR lab #Troubleshooting
>
>
> Hi all,
>
> I need to replace the oxygen sensor in my lab. The one I have is GFG ZD21
> https://www.gfgsafety.com/us-en/products/fixed-gas-detection-systems-transmitter/zd21
> and I have found that the sensors don't last very long and replacement ones
> are very difficult to calibrate. Right now it is hard-wired in the wall
> with a sensor at the ceiling and the floor. I don't really care too much
> about having two sensors/channels with a replacement unit, but I have
> existing conduit to run two sensors.
>
> Would be interested in hearing what oxygen monitors you use in your
> labs/facilities. I'd also be interested in a remote monitoring option if it
> isn't a zillion dollars.
>
>
>
>
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Received on Tue Aug 08 2023 - 09:34:04 MST