Preserving the Magna Carta with Temperature and Humidity Monitoring
Ohio Pen/10268379

CLEVELAND - OhioPen -- T&D Data Logger Provides Reliable Solutions for Museums

In 1215, King John of England created the Magna Carta to satisfy his rebellious barons. Originally for a few, it later became a powerful symbol of freedom and justice. In 2014, the Lincoln Cathedral copy of the Magna Carta was loaned to the U.S. Library of Congress for an exhibition. To validate the conditions of the fragile document while on exhibit and provide assurance to the loaning institution, the Library of Congress required a reliable and accurate temperature and humidity monitoring solution.

Installation

The Library of Congress selected the T&D TR-72NW-H high-precision data logger. The logger featured a high-accuracy temperature and humidity sensor, a local LCD, and a wired Ethernet connection. The network connection allowed the logger to upload recorded data to an on-site server and send e-mail alert notifications if the environmental conditions exceeded the user-configured limits.

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Since then, the TR-702 has been updated to a new model, the TR-72NW-S. It provides many of the same basic features of the TR-702 including:

• Local memory for 8,000 temperature and 8,000 humidity readings
• Accuracy of 3 °C and +/- 2.5 %RH
• Standard wired 10/100 BASE-T Ethernet connection
• 15 User selectable recording intervals

The TR-72-NW-S can upload real-time and recorded data to the T&D Web Storage Service cloud. This allows data to be viewed on a PC or mobile device, monitored in real-time, or downloaded in formats like Excel and CSV. The service also sends email alerts if user-set limits are exceeded, making it ideal for environmental monitoring.

Importance of Preservation

According to the archivists, preservation of the document is critical during the exhibition. Humidity can cause parchment to attempt to revert to its natural shape which would distort the print since the ink remains stable. Devices like the TR-702/TR-72NW are small, and discreet making them ideal for use in exhibit cases like this. Having an accurate recording of the environment, and a reliable temperature and humidity monitoring system with alerting in the event of excursions provides both the document's owner and the exhibitor peace of mind.

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CAS Dataloggers distributes the full line of T&D data logger products, including wired Ethernet and WiFi solutions and wireless monitoring systems that fill the needs of virtually any monitoring application.

For more information on T&D Data Loggers, temperature and humidity monitoring or to find the ideal solution for your application-specific needs, contact a CAS DataLogger Application Specialist at (800) 956-4437 or visit us at https://www.dataloggerinc.com