Temperature Sensors

Introduction to Adding Digital Temperature Sensors DS18B20 to the System

Adding digital temperature sensors to your system is a straightforward process that enhances its capability to monitor and control environmental conditions. The DS18B20 sensors are reliable, accurate, and easy to integrate. You can connect up to four DS18B20 sensors to a single signal port, simplifying the wiring and setup process. Here’s a step-by-step guide to help you get started.

Step 1: Connecting the Sensors

Each DS18B20 sensor is connected to the same signal port. Follow these steps to connect your sensors:

  1. Prepare the wiring: Ensure you have the necessary cables and connectors to attach each sensor to the signal port.

  2. Connect the sensors: Attach up to four DS18B20 sensors to the designated signal port. Ensure all connections are secure and correct.

Step 2: Mapping the Sensors in the Web Interface

Once the sensors are physically connected, you need to map them in the system’s web interface. This is done under the Config -> Sensors section:

  1. Access the web interface: Log in to your system’s web interface.

  2. Navigate to the Sensors configuration: Go to Config -> Sensors.

  3. Identify and name each sensor: The system will detect the connected sensors. You can assign a name to each sensor based on its location or purpose by comparing the displayed temperatures.

  4. Set offsets if needed: If there are any discrepancies in the readings, you can add an offset to each sensor to calibrate the temperatures accurately.

Step 3: Setting Up the Inside Temperature Sensor

It’s crucial to designate one of the DS18B20 sensors as the "Inside Temperature Sensor." This sensor plays a vital role in heater control and is displayed on the Pekaway Touchscreen’s main screen:

  1. Select the inside sensor: In the web interface, select which of the connected sensors will serve as the "Inside Temperature Sensor."

  2. Confirm the settings: Ensure that this sensor is accurately mapped and calibrated, as it will influence the heating system’s performance and the temperature readings shown on the main screen.

Important Note: Verifying Sensor Authenticity

When purchasing DS18B20 sensors, it’s important to verify their authenticity. There are many counterfeit sensors on the market that may not provide accurate readings or may fail prematurely. To ensure you are using genuine DS18B20 sensors:

  1. Buy from reputable suppliers: Purchase sensors from trusted and verified suppliers.

  2. Check for authenticity markings: Genuine DS18B20 sensors have specific markings and quality indicators. Familiarize yourself with these to spot fakes.

  3. Test your sensors: Before installing, test each sensor to verify its accuracy and functionality.

By following these steps and ensuring you use genuine sensors, you can successfully integrate up to four DS18B20 temperature sensors into your system, ensuring precise monitoring and control of your environment. This setup not only facilitates better temperature management but also enhances the overall efficiency of your heating system.


In addition to the 4 wired sensors, 3 additional Bluetooth sensors can also be easily added. See RUUVI TAGS

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