Waterproof One Wire Digital Temperature Sensor - DS18B20

Waterproof One Wire Digital Temperature Sensor - DS18B20

This sealed digital temperature probe lets you precisely measure temperatures in wet environments with a simple 1-Wire interface. The DS18B20 provides 9 to 12-bit (configurable) temperature readings over a 1-Wire interface (overall length approx 1.85m), so that only one wire (and ground) needs to be connected from a central microprocessor.

The DS18B20 measures temperature in degrees Celsius with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-bit serial number programmed into it which allows for a huge number of sensors to be used on one data bus. The DS18B20 One Wire Digital Temperature Sensor is a wonderful part that is the corner stone of many data-logging and temperature control projects.

Features of the DS18B20 One Wire Digital Temperature Sensor:

• Waterproof
• Unique 1-Wire® interface requires only one port pin for communication
• Each device has a unique 64-bit serial code stored in an onboard ROM
• Requires no external components
• Can be powered from data line. Power supply range is 3.0V to 5.5V
• Measures temperatures from –55°C to +125°C (–67°F to +257°F)
• ±0.5°C accuracy from –10°C to +85°C
• Thermometer resolution is user-selectable from 9 to 12 bits
• Converts temperature to 12-bit digital word in 750ms (max.)
• User-definable nonvolatile (NV) alarm settings
• Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
• Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system

Wiring

Black - GND
Red - VCC
White - Data

DS18B20 One Wire Digital Temperature Sensor Documents:

• DS18B20 Datasheet
• mbed Example
• Arduino Example