The DS1921H Thermochron iButton is a rugged, self-sufficient temperature logger that automatically records temperature history. It's a compact, button-shaped device designed for use in a wide range of temperature monitoring applications.

Applications

• Cold chain monitoring for pharmaceuticals and vaccines
• Food transportation and storage temperature tracking
• Environmental monitoring in agriculture and horticulture
• HVAC system performance monitoring
• Data center temperature logging
• Museum and archive climate control

Features

• Integrated temperature sensor with high accuracy
• Real-time clock (RTC) for accurate time-stamping of temperature readings
• Nonvolatile memory for storing temperature data and configuration settings
• Unique 64-bit registration number for absolute traceability
• Water resistant and rugged stainless steel package
• Directly communicates with a PC through a 1-Wire interface
• User-configurable temperature logging rate and alarm thresholds

Benefits

• Provides a complete temperature history for compliance and analysis
• Ensures product quality and safety by identifying temperature excursions
• Reduces spoilage and waste by enabling timely corrective actions
• Simplifies data collection and analysis with easy-to-use software tools
• Offers a cost-effective solution for temperature monitoring needs
• Allows for precise temperature profiling and optimization

Additional Details

The DS1921H measures temperatures from -40°C to +85°C with ±0.5°C accuracy over the range of 0°C to +70°C. It can store up to 2048 temperature readings, time-stamped by the integrated RTC. The logging rate is user-configurable, ranging from 1 minute to 255 minutes. Alarm thresholds can be set to trigger visual or audible alerts when temperature limits are exceeded. The device is powered by an internal lithium battery with a typical lifespan of 10 years, depending on the logging rate. Data is transferred to a PC using a 1-Wire adapter. The iButton is housed in a durable stainless steel package that protects it from harsh environments.