Thank you, William. Yes, unfortunately I'm thinking that -40C mark is going to be difficult to get under - seems to be to universal threshold for the type of logger I need.
Julie On Wednesday, December 11, 2019 at 7:11:46 AM UTC-8, William Donnelly wrote: > > Hi Julie – > > > > I used a HOBO Pro V2 Ext Temp/RH logger for my MA research. They are built > to monitor outdoor conditions and worked well during my study. Our freezer > conditions are -35C. Not sure if this recommendation will be helpful, since > the lowest operating temperature for the unit is -40C. > > > > > https://www.onsetcomp.com/products/data-loggers/u23-002?creative=178262173812&keyword=&matchtype=&network=g&device=c&gclid=EAIaIQobChMImJ2k5u6t5gIVJYNaBR2W5wyEEAQYAyABEgKfC_D_BwE > > > > William > > > > > > > > *William Donnelly* > > (he, him, his) > > Assistant Preventive Conservator & Affiliated Instructor WUDPAC > > Winterthur Museum, Garden & Library > > Direct 302.888.4680 > > 5105 Kennett Pike > > Winterthur, DE 19735 > > *winterthur.org <http://winterthur.org>* > > > > > > > > *From:* [email protected] <javascript:> <[email protected] > <javascript:>> *On Behalf Of *[email protected] <javascript:> > *Sent:* Monday, December 9, 2019 4:51 PM > *To:* Museumpests <[email protected] <javascript:>> > *Subject:* [pestlist] Freezer Datalogger: Recommendations? > > > > Hello, Pestlist > > > > Looking for recommendations for a freezer treatment datalogger that can go > to very low temps. > > > > Backstory: > > We set our freezer to stay between -35 and -25F (the variation from its > cycling). However, there are instances where the temperature has dipped > below -40F (which is also -40C if anyone else thinks that's interesting!). > Unfortunately, -40 is the temperature our Onset HOBO bluetooth loggers lose > functionality. One by one they have been erroring. After it happens once > that logger can no longer function at temperatures under -20Fish. > > > > Have others ran into this problem? Ideally our freezer wouldn't get that > low, but this is a problem that seems to happen sporadically despite > regular maintenance. Can anyone recommend a logger that functions under > -40F? I see many that have probes, but those will not work with our setup. > I've looked into Onset and Thermoworks primarily, I'd be happy to > investigate other big names if suggested. > > > > Regards, > > > > Julie McInnis > > Collections Care Specialist > > Fine Arts Museums of San Francisco > > -- > You received this message because you are subscribed to the Google Groups > "Museumpests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pestlist/ebd60997-acca-4866-88e4-c00ef541a2ca%40googlegroups.com > > <https://groups.google.com/d/msgid/pestlist/ebd60997-acca-4866-88e4-c00ef541a2ca%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > This message came from outside of Winterthur, and has been scanned for > viruses. > > -- You received this message because you are subscribed to the Google Groups "Museumpests" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/pestlist/57836145-9cab-4b82-bf2c-b2f966b3652d%40googlegroups.com.
