IBUTTON DATALOGGER DS1921G เครื่องบันทึกอุณหภูมิ แบบกระดุม

DS1921G Thermochron iButton is a logger suitable for a wide range of applications. iButton Datalogger DS1921G : -40 to 85 CiButton Datalogger DS1921G : -40 to 85 C Description: 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 values are taken and stored at equidistant intervals ranging from 1 to 255 minutes. The histogram provides 63 data bins with a resolution of 2.0°C. If the temperature leaves a user-programmable range, the DS1921G also records when this happened, for how long the temperature stayed outside the permitted range, and if the temperature was too high or too low. An additional 512 bytes of read/write NV memory allow storing information pertaining to the object to which the DS1921G is associated. Data is transferred serially through the 1-Wire protocol, which requires only a single data lead and a ground return. Every DS1921G is factory lasered with a guaranteed unique electrically readable, 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 DS1921G to be mounted on almost any object, including containers, pallets, and bags. Specifications: iButton Size F5 - 5mm Operating Temperature -40°C to +85°C Temperature Accuracy ± 1°C: -30°C to +70°C ( ± 1.3°C outside this range) Temperature Resolution 0.5°C Log Memory Size 4K Bits Memory Type NV SRAM Logging Rate Programmable: 1 to 255 min General Purpose Memory 512 Bytes Read/Write Logging Capacity 2048 Readings Battery Life Up to 10 years Alarm Support High/Low Temperature Alarms Shelf life with battery installed 10+ years Family Code 0x21 Unique ID Yes - Factory Set 64 Bit Serial # Intrinsically Safe Yes