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THERMOCHRON IBUTTONS 

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What is a Thermochron?

The Thermochron family of iButtons are temperature data loggers that can go almost anywhere.  They record time, temperature, and optional humidity, storing these readings for later analysis.  The iButton's embedded computer chip integrates a 1-Wire transmitter / receiver, a globally unique address, a thermometer, a clock/calendar, a thermal history log, an alarm event log, and additional memory to store user data, such as location data  or a shipping manifest. Thermochron iButtons are recyclable,  and under normal conditions, will log data for up to 10 years or 1 million temperature measurements.

The following table is a comparison of the available Thermochron models:

Model Temperature Range Accuracy Resolution Values/Readings Logging Rate
DS1921G -40°C to +85°C ± 1°C: -30°C to +70°C
± 1.3°C outside this range
0.5°C 2048 1 to 255 min
DS1921H +15°C to +46°C ± 1°C 0.125°C 2048 1 to 255 min
DS1921Z -5°C to +26°C ± 1°C 0.125°C 2048 1 to 255 min
DS1922L -40°C to +85°C ± 0.5°C: -10°C to +65°C
(With software correction)
Programmable
0.5°C - 8 bit /
0.0625°C - 11 bit
8192 - 8 bit /
4096 - 16 bit
1 sec to 273 hrs
DS1922T 0°C to +125°C ± 0.5°C: +20°C to +75°C
(With software correction)
Programmable
0.5°C - 8 bit /
0.0625°C - 11 bit
8192 - 8 bit /
4096 - 16 bit
1 sec to 273 hrs
DS1923
Hygrochron
(Humidity and Temperature)
-20°C to +85°C
Includes 0 to 100% Humidity Logger
± 0.5°C: -10°C to +65°C
(With software correction)
Programmable
0.5°C - 8 bit /
0.0625°C - 11 bit
8192 - 8 bit /
4096 - 16 bit
1 sec to 273 hrs

Scientific Research Projects - iButtons can be discretely located in the environment for monitoring the temperature of ecosystems.

  • Because of their low-cost, it is possible to have multiple loggers spread throughout an area.
  • Because of their small size, loggers can be attached to places previously impossible.

Monitoring Thermally Sensitive Products - iButtons easily attach to containers of frozen or fresh foods, blood products, and chemicals or drug reagents, recording time and temperature during transport and storage. By logging the thermal experience of temperature-sensitive material, you can pinpoint responsibility for spoilage and take corrective action.




Embedded Data Systems provides an extensive line of products that simplify the task of working with Dallas (Maxim) 1-Wire and iButton related technologies. Ranging from Host Adapters to Sensors to iButton loggers, we offer OEMs and integrators one of the most complete lines of 1-Wire and iButton products in the world. Our products are designed for ease of use and low cost, which will simplify your product development while reducing both your engineering costs and your time to market.
[ DS1922L-F5 - Dallas Thermochron iButton -40°C thru +85°C ]
DS1922L-F5 - Dallas Thermochron iButton -40°C thru +85°C
DS1922L-F5 - Dallas Thermochron iButton -40°C thru +85°C
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The DS1922L 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 fro ...
 
[ DS1922T-F5 - Dallas Thermochron iButton  0°C thru +125°C ]
DS1922T-F5 - Dallas Thermochron iButton 0°C thru +125°C
DS1922T-F5 - Dallas Thermochron iButton 0°C thru +125°C
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The DS1922T 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 fro ...
 
[ DS1923-F5 - Dallas Hygrochron Temperature & Humidity iButton ]
DS1923-F5 - Dallas Hygrochron Temperature & Humidity iButton
DS1923-F5 - Dallas Hygrochron Temperature & Humidity iButton
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The DS1923 temperature / humidity logger iButton is a rugged, self-sufficient system that measures temperature and/or humidity 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 equidi ...
 
[ DS1921H-F5 - Dallas Thermochron iButton +15°C thru +46°C ]
DS1921H-F5 - Dallas Thermochron iButton +15°C thru +46°C
DS1921H-F5 - Dallas Thermochron iButton +15°C thru +46°C
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The DS1921H Thermochron 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, both as a direct storage of temperature values as well as in the form of a histogram. Up to 2048 temper ...
 
[ DS1921Z-F5 - Dallas Thermochron iButton -5°C thru +26°C ]
DS1921Z-F5 - Dallas Thermochron iButton -5°C thru +26°C
DS1921Z-F5 - Dallas Thermochron iButton -5°C thru +26°C
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The DS1921Z Thermochron 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, both as a direct storage of temperature values as well as in the form of a histogram. Up to 2048 temper ...
 
[ DS1921G-F5 - Dallas Thermochron iButton -40°C thru 85°C ]
DS1921G-F5 - Dallas Thermochron iButton -40°C thru 85°C
DS1921G-F5 - Dallas Thermochron iButton -40°C thru 85°C
Check Latest Price

The DS1921G Thermochron iButton is a rugged, self-sufficient system that measures temperature and records the results in a protected memory section. The recording is done at a user-defined rate, as both a direct storage of temperature values and in the form of a histogram. Up to 2048 temperature ...
 
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