Temperature Sensor - High Temperature, Waterproof (DS18B20)

The Sparkfun DS18B20 Waterproof High-Temperature Sensor is a versatile and precise tool for measuring temperatures in wet environments. It uses a simple 1-Wire interface, allowing for a streamlined connection to a central microprocessor. This sensor is capable of providing 9 to 12-bit temperature readings, with the power for reading, writing, and performing temperature conversions derived directly from the data line, eliminating the need for an external power source.

The DS18B20 stands out due to its unique silicon serial number. This feature allows for the use of multiple DS18B20 sensors on the same 1-Wire bus, enabling temperature measurements in various locations. This is particularly beneficial in applications such as HVAC environmental controls, indoor temperature sensing, machinery or equipment temperature monitoring, and process monitoring and control.

The sensor's pinout is as follows: RED=Vcc BLACK=GND WHITE=SIG.

The DS18B20 is packed with features:

• It operates on an input voltage of 3.0-5.5V.
• It can measure temperatures ranging from -55°C to +125°C.
• It offers ±0.5°C accuracy from -10°C to +85°C.
• It is waterproof, making it suitable for wet environments.
• It uses a 1 Wire interface for communication.
• The probe has a diameter of 7mm and a length of approximately 26mm. The overall length, including the wire, is approximately 1.83 meters.
• The thermometer resolution is programmable from 9 to 12 bits.
• It offers robust electrical performance, with no flicker or breakdown within AC 1200V/1S. At DC 500V, the insulation resistance is greater than 100MΩ.

For additional details and specifications, refer to the datasheet provided by Sparkfun.