DS1921G

DS1921G Manufacturer

DS1921G Description

DS1921G Categories

DS1921G Datasheet (PDF)

DS1921G Price & Availability

DS1921G Features

• Digital thermometer measures temperature 0.5°C increments
• Accuracy ±1°C from -30°C to +70°C. See EC table for accuracy specification
• Built-in real-time clock (RTC) and timer has accuracy of ±2 minutes per month per month from 0°C to 45°C
• 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 2.0°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 or 125kbits per second using 1-Wire ® protocol
  
  Common iButton features:
• Digital identification and information by momentary contact
• Unique, factory-lasered and tested 64-bit reg-istration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures ab-solute traceability because no two parts are alike
• Multidrop controller for 1-Wire net
• Chip-based data carrier compactly stores information
• Data can be accessed while affixed to object
• Button shape is self-aligning with cup-shaped probes
• Durable stainless-steel case engraved with registration number withstands harsh environments
• Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim
• Presence detector acknowledges when reader first applies voltage
• Meets UL#913 (4th Edit.). Intrinsically Safe Apparatus: approved under Entity Concept for use in Class I, Division 1, Group A, B, C and D Locations (application pending)

DS1921G Parameters