Maxim Integrated . DS1922T-F5#

iButton

The DS1922T temperature logger iButtons are rugged, self-sufficient systems that measure temperature and record the result in a protected memory section. The recording is done at a user-defined rate. A total of 8192 8-bit readings or 4096 16-bit readings taken at equidistant intervals ranging from 1s to 273hrs can be stored. In addition to this, there are 512 bytes of SRAM for storing application-specific information and 64 bytes for calibration data. A mission to collect data can be programmed to begin immediately, or after a user-defined delay or after a temperature alarm. Access to the memory and control functions can be password protected. The DS1922T is configured and communicates with a host computing device through the serial 1-Wire protocol, which requires only a single data lead and a ground return. Every DS1922T is factory-lasered with a guaranteed unique 64-bit registration number that allows for absolute traceability. The durable stainless-steel package is highly resistant to environmental hazards such as dirt, moisture, and shock. Accessories permit the DS1922T to be mounted on almost any object, including containers, pallets, and bags. Applications: Environmental and thermal management systems (HVAC); Human and animal temperature monitoring; Monitoring of processes which require temperatures close to the boiling point of water, such as pasteurization of food items; Monitoring of refrigeration systems; Temperature-critical product shipping and storage, such as fresh produce, pharmaceuticals, and blood products.