DS1921GRobust, self-sufficient system that measures temperature and records results
Key features
- Digital thermometers measure temperature in 0.5°C increments
- Accuracy ± 1°C from -30°C to +70°C (see full accuracy specification datasheet.)Electrical characteristics）
- Built-in real-time clock (RTC) and timer accuracy ± 2 minutes from 0°C to +45°C per month
- Water or water resistant (more than 3 ATM needs if placed inside the DS9107 iButton capsule)
- Automatic wake-up and measures temperature at user-programmable intervals from 1 minute to 255 minutes
- Log: Continuous temperature measurement data logging memory 2KB
- Record a long-term temperature histogram with 2.0°C resolution
- Programmable high temperature, low temperature alarm trigger point
- Record up to 24 timestamps and durations when temperature leaves within the specified range of trigger points
- 512 bytes of general-purpose battery-powered SRAM
- Communication with a single digital signal host uses the 1-Wire protocol, at 15.4kbps or up to 125kbps
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Common iButton features
- Short exposure to digital identification and information
- The unique, factory-lithography and tested 64-digit registration number (8-bit family code + 48-bit serial number + 8-digit CRC check number) guarantees absolute traceability because no two parts are the same
- Multipoint controller for 1-Wire networks
- Chip-based data carriers store information tightly
- Data can be accessed while attached to objects
- The shape of the button is to automatically align the cup probe
- The robust stainless steel housing engraved with the registration number withstands harsh environments
- The easy-to-stick adhesive adhesive self-adhesive and its flange latch, or locked with a ring on the edge of the pressed it
- When the reader first applies the voltage detection response
- Complies with UL 913, Fifth Edition, Revised February 24, 1997, Absolute Safety Equipment: Approved Use under the Entity Concept in Class I, Groups 1 A, B, C and D locations
description
DS1921GThermochron®iThe button ® is a rugged, self-sufficient system that measures temperature and records the results in a protected memory section. After completing the recording, the user-defined rate is stored directly, either as a temperature value as well as in the form of a histogram. Up to 2048 temperature values can be stored at equal intervals from 1 to 255min. The histogram provides 63 data boxes with a resolution of 2.0°C. If the temperature is left within a user-programmable range, the DS1921G also records when this occurs and how long the temperature remains outside the permissible range if the temperature is too high or too low. An additional 512-byte battery-powered SRAM allows storage of information about the DS1921G that is associated with the object. The 1-Wire® protocol, where data is transmitted serially, requires only one data line and a return ground wire. Each DS1921G factory lithography is guaranteed to be unique, electrically readable, 64-bit registration number, absolutely traceable. Robust stainless steel package with high resistance to environmental hazards such as dust, moisture and impact. Accessories allow the DS1921G to be mounted on almost any object, including containers, pallets, bags.