iButton® Specialist and Manufacturer of Dallas Keys

Thermochron IButton 8K Data Points -40/85C


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DS1922L Temperature Logger iButton® with 8KB Data-Log Memory


The DS1922L 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 DS1922L 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 DS1922L 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 DS1922L 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 -10°C to +65°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