The DS1922L/T 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 DS1922L/T 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 DS1922L/T 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/T to be mounted on almost any object, including containers, pallets, and bags.
· Automatically Wakes up, Measures Temperature and Stores Values in 8KB of Datalog Memory in 8- 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 (DS1922L), ±0.5°C from +20°C to +75°C (DS1922T) with Software Correction
· Water resistant or waterproof if placed inside DS9107 iButton capsule (Exceeds Water Resistant 3 ATM requirements)
· Sampling Rate from 1s up to 273hrs
· Programmable Recording Start Delay After Elapsed Time or Upon a Temperature Alarm Trip Point
· Programmable High and Low Trip Points for Temperature Alarms
· Quick Access to Alarmed Devices Through 1-Wire Conditional Search Function
· 512 Bytes of General-Purpose Plus 64 Bytes of Calibration Memory
· Two-Level Password Protection of All Memory and Configuration Registers
· Communicates to Host with a Single Digital Signal at up to 15.4kbps at Standard Speed or up to 125kbps in Overdrive Mode Using 1-Wire Protocol
· Operating Range: DS1922L: -40 to +85°C; DS1922T: 0 to +125°C