DS1922L:iButton Temperature Loggers with 8KB Data-Log Memory

The iButton® temperature loggers (DS1922L/T) 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. While all iButton data loggers are calibrated/validated against NIST traceable reference devices, Maxim offers a web application to generate validation certificates for the DS1922L/T data loggers. Input is an iButton registration number (or list of numbers) and the output is a validation certificate in PDF format.

Key Features
  • High Accuracy, Full-Featured Digital Temperature Logger Simplifies Temperature Data Collection and Dissemination of Electronic Temperature Record
    • Temperature Accuracy of ±0.5°C from -10°C to +65°C (DS1922L), ±0.5°C from +20°C to +75°C (DS1922T), with Software Corrections
    • Measures Temperature with 8-Bit (0.5°C) or 11-Bit (0.0625°C) Resolution
    • Operating Temperature Range: DS1922L: -40°C to +85°C; DS1922T: 0°C to +125°C
    • Automatically Wakes Up, Measures Temperature, and Stores Values in 8kB of Data-Log Memory in 8- or 16-Bit Format
    • 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
    • 512 Bytes of General-Purpose Memory Plus 64 Bytes of Calibration Memory
    • Two-Level Password Protection of All Memory and Configuration Registers
    • Individually Calibrated in a NIST-Traceable Chamber
    • Complies to Standard EN12830
  • Rugged Construction Survives Harsh Environments
    • Water Resistant Enclosure (IP56) or Waterproof if Placed Inside DS9107 iButton Capsule (Exceeds Water Resistant 3 ATM Requirements)
    • CE, FCC, and UL913 Certifications
  • Simple Serial Port Interfaces to Most Microcontrollers for Rapid Data Transfer
    • Communicates to Host with a Single Digital Signal Up to 15.4kbps at Standard Speed or Up to 125kbps in Overdrive Mode Using 1-Wire Protocol
    • Quick Access to Alarmed Devices Through 1-Wire Conditional Search Function
iButton Temperature Logger
iButton Temperature Logger
Applications/Uses
  • High-Temperature Logging (Process Monitoring, Industrial Temperature Monitoring)
  • Temperature Logging in Cold Chain, Food Safety, Bio Science, and Pharmaceutical and Medical Products
DataSheet
titleDownload file
DS1922L-DS1922T Data SheetDS1922L-DS1922T.pdf
Parametrics
Part NumberInterfaceTechnologyApplicationsUsageMemory TypeMemory SizeData Logger TypeTemp. ReadingsOper. Temp.
(°C)
Budgetary
Price
See Notes
DS1922L1-WireiButtonAsset ManagementMulti UseNV SRAM512 BytesTemperature8192-40 to +85$41.14 @1k
DS1922TAsset Management
Industrial Monitoring
Process Monitoring
0 to +125$62.68 @1k
Quality and Environmental Data
Related Products
  • DS2422:1-Wire Temperature/Data Logger with 8KB Datalog Memory
  • DS1921G:Thermochron iButton Device
  • DS1921Z:High-Resolution Thermochron iButton Devices
  • DS1921H:High-Resolution Thermochron iButton Devices
Ordering Information
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1922L-F5#ActiveCAN-F5,;2 pin;301 mm²-40°C to +85°C
DS1922L-F5+No Longer AvailableDS1921Z-F50CAN;-40°C to +85°CSee data sheet
DS1922L-DS1922T.pdf DS1922T
Instructions for Compiling the OneWireViewer for Linux DS1922T
iButton Mission Data Recovery: memlog User Guide DS1922T
Interface 1-Wire USB Adapter with Android DS1923
Understanding the DS1WM Synthesizable 1-Wire Bus Master DS1923
Choosing the Logger iButton That's Right for You DS1923
White Paper 5: Using 1-Wire APIs for Data Sheet Commands DS1921K
1-Wire File Structure DS1923
Reading and Writing 1-Wire® Devices Through Serial Interfaces DS1923
DS1922L.pdf DS1922L