DS1921H-F5

高分辨率的Thermochron ？ iButton的？范围H ： + 15 ° C至+ 46 ° C， Z： -5 ° C至+ 26°C High-Resolution Thermochron? iButton? Range H: +15°C to +46°C, Z: -5°C to +26°C

iButton DESCRIPTION

The DS1921H/Z 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 ofa histogram. Up to 2048 temperature values taken at equidistant intervals ranging from 1 to 255 minutes can be stored. The histogram provides 64 data bins with a resolution of0.5°C.

SPECIAL FEATURES

Digital thermometer measures temperature in 1/8°C increments with ±1°C accuracy

Built-in real-time clock RTC and timer has accuracy of ±2 minutes per month from 0°C to 45°C

Water resistant or waterproof if placed inside DS9107 iButton® capsule Exceeds Water Resistant 3 ATM requirements

Automatically wakes up and measures temperature at user-programmable intervals from 1 to 255 minutes

Logs up to 2048 consecutive temperature measurements in protected nonvolatile NV random access memory

Records a long-term temperature histogram with 1/2°C resolution

Programmable temperature-high and temperature-low alarm trip points

Records up to 24 time stamps and durations when temperature leaves the range specified by the trip points

512 bytes of general-purpose read/write NV random access memory

Communicates to host with a single digital signal at 15.4kbits or125kbits per second using 1-Wire® protocol

Fixed range: H: +15°C to +46°C; Z: -5°C to +26°C