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Subject: Environmental monitoring

Environmental monitoring

From: Iona McCraith <iona.mccraith>
Date: Tuesday, November 19, 2002
The following inquiry is posted for someone who is not on this list.
Please respond directly to them and also to the list if your
comments are of general interest.

    We are investigating purchasing additional hygrothermographs for
    our facilities, which leads me to ask a few questions.

    Right now we have an Isuzu 3-1125 as well as a Weksler
    Instruments circular chart recorder (Type 10 T2), which may or
    may not work.  I have been speaking with a vendor about the
    possibility of repairing the two Isuzu recorders that we have
    and purchasing two new Isuzu units (Model #3-3125). We have been
    quoted $890 ($CAN) each for the Isuzu units.  If our current
    units can not be repaired, we will be purchasing four new

    Does anyone now if there are any Canadian distributors for
    Weksler (preferably in Ontario)?  Would the quality of Weksler's
    hygrothermographs be comparable, superior, or inferior to that
    of Isuzu's? Would the prices be similar?

    Also, the vendor is selling a datalogger manufactured by Onset.
    The model is the HOBO LCD Temp/Data Logging System.  Apparently
    it also has an analog chart on the inside and it uses the PALM
    OS, so one can download information to a PALM compatible unit.
    The HOBOs are running for $308 + $155 ($CAN) for the software.

    Generally, are dataloggers as dependable as the more traditional
    hygrothermographs, or are there more things to breakdown?  Are
    they easy to maintain?

    Ken Hernden, MLIS
    Adjunct University Archivist
    York University Archives and Special Collections
    khernden [at] yorku__ca

Iona McCraith
Preservation Consultant
Bethany, Ontario

                  Conservation DistList Instance 16:34
                 Distributed: Friday, November 22, 2002
                       Message Id: cdl-16-34-033
Received on Tuesday, 19 November, 2002

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