Thermochron Temperature Loggers are the perfect device for continually monitoring the temperature, especially when space is limited. These tiny devices automatically record the date, time and temperature at a set interval.

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Additional information – Thermochron-TC-Ultra

The TCU temperature logger is a rugged, self-sufficient system that measures temperature and records 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, 576 bytes of SRAM store application-specific information. 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 TCU 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 TCU 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.

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

Key Features

  • Automatically Wakes Up, Measures Temperature, and Stores Values in 8KB of Data-Log Memory in 8- or 16-Bit Format
  • Digital Thermometer Measures Temperature with 8-Bit (0.5°C) or 11-Bit (0.0625°C) Resolution
  • Temperature Accuracy: ±1.5°C from +110°C to +140°C, ±7°C typical from +15°C to +110°C
  • Water Resistant or Waterproof if Placed Inside DS9107 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
  • 576 Bytes of General-Purpose Memory
  • Two-Level Password Protection of All Memory and Configuration Registers
  • 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
  • Operating Temperature Range: +15°C to +140°C


  • Stand-alone high-temperature measuring and logging applications
  • Steam sterilization applications