Proving the Business Case for the Internet of Things

Maxim data logger improves cold chain monitoring

Steve Rogerson
June 15, 2016
Monitoring cold chain and other temperature sensitive products or processes for longer sessions has been made possible with the DS1925 iButton data logger from Maxim Integrated Products.
Temperature sensitive products and processes can be damaged when exposed to temperatures that are too high or too low. Previously, companies could only retrieve 16kbyte of data for each session of critical temperature monitoring, and would often need to reduce the data sample. With 122kbyte of data-log memory, the DS1925 provides longer monitoring sessions while maintaining the desired sample rate.
The device is said to deliver high accuracy over a wide temperature range, and can measure battery life. It also retains measurements even if the battery life ends before the logger is replaced.
"Our life science customers depend on us to provide robust data in order for them to make informed decisions, and ultimately ensure global patient safety," said Tobias Holmer, product manager for Swedish temperature technology company TSS. "The accuracy, reliability, responsiveness, and superior form factor of iButton temperature loggers gives an added level of confidence in the quality of the captured data. With this new high capacity DS1925 model, our customers can increase the sample rate for longer missions at a maintained level of superior quality."
While some other temperature loggers have plastic covers, the DS1925 is made with a durable stainless steel enclosure to withstand harsh environments and conditions. It is suitable for temperature logging in cold chain, pharmaceutical, medical, bioscience and food safety applications.
"Maxim's deep experience in environmental and temperature sensors help us develop next-generation products like the DS1925 to solve customer challenges," said Scott Jones, executive director of California-based Maxim Integrated. "The iButton product line has been trusted for many years and we are committed to maintaining its high level of quality for Maxim customers like TSS."
Accuracy is ±0.5ËšC over a -40 to +85ËšC range. It has the diameter of one dime and thickness of three nickels (17.3 by 5.89mm).
Evaluation kits are available with hardware, software, host system source code, accessory products and system references.