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Cảm biến nhiệt độ Digital DS18B20

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19.000 VNĐ

  • Mã SP : Cảm biến nhiệt độ Digital DS18B20
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DS18B20 One-Wire Digital Thermometer

Description
The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable 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. 

Key Features

  • ±0.5°C accuracy from -10°C to +85°C.
  • Measures temperatures from -55°C to +125°C (-67°F to +257°F).
  • 9- to 12-bit user-configurable resolution.
  • 1-Wire interface requires only one port pin for communication.
  • Has a 64-bit unique and unchangeable electronic serial number.
  • Multi-drop capability for simplified distributed temperature sensing.
  • Alarm function with user-defined nonvolatile alarm settings.
  • Converts temperature to 12-bit digital word in 750ms (max.).
  • No external components required to sense temperature.
  • 3.0V to 5.5V supply range.
  • 3-pin TO-92 (DS18B20) package.

Applications

  • Agricultural Systems
  • Thermostatic controls
  • Industrial systems
  • Consumer products
  • Thermometers
  • Any thermally sensitive system. 
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