Agreed. If you set them to read too often, say every 10 minutes, they you have to download them more often, otherwise the early data gets erased. Unless you have a serious problem somewhere, hourly should be plenty of time, then you might only have to download like once a month! Lynne Mickle Smaczny Assistant to the Director Glessner House Museum 1800 S. Prairie Avenue Chicago, IL 60616-1320 312-326-1480; F 312-326-1397 www.GlessnerHouse.org ----- Original Message ----- From: "Kathy Haas" <[log in to unmask]> To: [log in to unmask] Sent: Thursday, June 17, 2010 12:58:44 PM GMT -06:00 US/Canada Central Subject: Re: [MUSEUM-L] Recording thermohydrograph We set our loggers in the building to read hourly, largely because that gives us a good window of time before we need to read out the loggers. We have found that hourly readings are plenty frequent enough to document the kinds of temp/rH fluctuations that we see. For loggers that are going in travel crates we set the readings much more frequently, since the exposure is greater. Katherine Haas Assistant Curator Rosenbach Museum & Library 2008 Delancey Pl. Philadelphia, PA 19103 215-732-1600 x129 215-545-7529 (fax) From: Museum discussion list [mailto:[log in to unmask]] On Behalf Of Mark Walker Sent: Wednesday, June 16, 2010 11:16 AM To: [log in to unmask] Subject: [MUSEUM-L] Recording thermohydrograph Hello all, I recently acquired several digital thermohydrographs. They seem to be incredibly flexible with their recording settings, and I was wondering how often should I set my loggers to record. For example , is recording the temperature/humidity hourly overkill or not enough? Also how often should I be reading these things out? Many thanks for any advice you could give me Cheers Mark Mark Walker Curator Pacific Grove Museum of Natural History 165 Forest Avenue Pacific Grove, CA 93950 Telephone: (831) 648-5716 (ext. 12) Fax: (831) 372-3256 Email: [log in to unmask] ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes). ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes). ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).