Description

This is a pre-wired and waterproofed version of the DS18B20 sensor.

The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile userprogrammable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C. In addition, the DS18B20 can derive power directly from the data line ("parasite power"), eliminating the need for an external power supply.

Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.

Features

• Unique 1-Wire interface.

• 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 759ms (Max)

• Stainless steel tube 6mm diameter by 30mm long

• Cable is 100cm long, 4mm diameter

Interface

• Red wire : Connect to DC3V ~ DC5V

• Yellow/white wire : Data line

• Green/Blue wire : Connect to Ground