IButton DS1922T Thermochron Data Logger (0 To +125'C)

Description

The DS1922T iButton ® temperature logger is a rugged, self-sufficient system that measures temperature and records the result in a protected memory section. A total of 8192 8-bit readings or 4096 16-bit readings can be stored at recording intervals ranging from 1s to 273hrs. 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 DS1922T 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 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.

NOTE: Requires Software and adapter cable to communicate.

Features

• 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 +20°C to +75°C with Software Correction
• Water resistant or waterproof if placed inside DS9107 iButton capsule (Exceeds Water Resistant 3 ATM requirements): See Recommendations Tab.
• 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: 0 to +125°C
• Meets UL 913, 5th Ed., Rev. 1997-02-24; Intrinsically Safe Apparatus, Approved under Entity Concept for use in Class I, Division 1, Group A, B, C, and D Locations
• Underwriters Laboratories (UL) Recognized

Specifications

• Memory Type: NVSRAM
• Memory Size: 512 bytes
• Data Logger Size: 8192 byte
• Data Logger Sample Rate: 1s to 273 hours
• Data Logger Accuracy: correctible to +/- 0.5’C
• Data Logger Resolution: Selectable
  8-bit = 0.5’C
  11-bit = 0.0625’C
• Measurement Range: 0 to +125’C
• Thermal Response time: up to 130 seconds
• Security Features: password protected
• Programmable Alarm: Temperature High/Low
• Real Time Clock: Yes
• RTC Accuracy: depends on temperature, @ 20’C drift ~ 1 minute/month.
• Weight: 3.3g
• Size: diameter 17.35 x 5.9mm
• IP Rating: IP56
• Battery Life: depends on number of factors such as Temperature and Logging rate. E.g. 8-bit logging @ 20’C at 30 second intervals, the battery should last around 300 days. Record every 10 minutes in 8-bit mode @ 20’C, the battery should last around 5.5 years. 

Technical

i-button datalogger catalogue

Applications

• Environmental and Thermal Management Systems (HVAC)
• Human and Animal Temperature Monitoring.
• Monitoring of processes that require temperatures close to the boiling point of water, such as pasteurization of food items.
• Monitoring of refrigeration systems.
• Temperature-Critical Product Shipping and Storage, such as Fresh Produce, Pharmaceuticals, and Blood Products.