iButton® Specialist and Manufacturer of Dallas Keys



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DS1922T Temperature Logger iButton® with 8KB Data-Log Memory

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 273hr, can be stored. Additionally, 512 bytes of SRAM store application-specific information and 64 bytes store calibration data. A mission to collect data can be programmed to begin immediately, 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 communicate with a host-computing device through the serial 1-Wire® protocol, which requires only a single data lead and a ground return. Each 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.


Automatically Wakes Up, Measures Temperature, and Stores Values in 8KB of Data-Log Memory in 8-Bit or 16-Bit Format
Digital Thermometer Measures Temperature with 8-Bit (0.5°C) or 11-Bit (0.0625°C) Resolution
Accuracy of ±0.5°C from +20°C to +75°C, with Software Corrections
Water Resistant or Waterproof if Placed Inside DS9107 iButton Capsule (Exceeds Water Resistant 3 ATM Requirements) Sampling Rate from 1s Up to 273hr
Programmable High and Low Trip Points for Temperature Alarms
Programmable Recording Start Delay After Elapsed Time or Upon a Temperature Alarm Trip Point
Quick Access to Alarmed Devices Through 1-Wire™ Conditional Search Function
512 Bytes of General-Purpose Memory Plus 64 Bytes of Calibration Memory