Why should I buy a PEM for $650 when I can buy a datalogger for $150?
Because they don’t do the same job. There are many types and styles of dataloggers available that offer varying degrees of: accuracy, support, software and specialization to a particular task. The PEM is specifically designed to do two things very well: • It gathers temperature and humidity data accurately and efficiently for institutional preservation programs. A datalogger that suits the needs of preservation monitoring is one that makes the task easiest, most reliable and continuous. Experienced datalogger users know that the time spent configuring loggers and collecting and organizing data is the biggest expense in monitoring, not the original price of the logger itself. The PEM’s card upload extracts the data in 20 seconds and its five-year data capacity forgives inattention and ensures that no data is lost. • The PEM provides a direct, real-time display of TWPI (Time-Weighted Preservation Index), a measure of how fast organic materials are decaying due to “natural aging.” This nu
