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Temperature & Humidity Sensor

Gravity: MAX31855K K-type High Temperature Sensor

SKU: DFR0558

The Gravity MAX31855K K-type High Temperature Sensor is designed for precise temperature monitoring across extreme ranges, featuring a signal amplification conversion module and an armored K-type thermocouple probe. With an input voltage range of 3.3V to 5.5V, this sensor supports temperatures from -270°C to 1372°C with a resolution of 0.25°C. The probe is waterproof, corrosion-resistant, and capable of withstanding high temperatures, making it suitable for various industrial applications. Its Gravity I2C interface ensures seamless integration into existing systems.

Front of K-type temperature sensor module with USB connector-DFRobot product sku:DFR0558 image.

Downloadable Resources

  • Docs
  • Tech Specs
  • Projects

    • 1. Example Code for Arduino-Read Temperature

    Use the DFRobot Digital High Temperature Sensor (K-type) with Arduino to read current temperature and print it every one second. Users can learn how to connect the sensor to Arduino via I2C, install the DFRobot_MAX31855 library, and use the library to read temperature data.

    2. Example Code for Raspberry Pi-Read Temperature

    The guide on setting up a Raspberry Pi to measure temperature using DFRobot's digital high temperature sensor and K-type thermocouple. It includes hardware and software preparation steps, a wiring diagram, and instructions for installing necessary Python libraries. Readers can follow a step-by-step guide to configure the Raspberry Pi's I2C interface, download and run the driver library, and execute sample code to read temperature data. The guide ensures users can troubleshoot common issues, like reversed probe connections, to obtain accurate temperature readings.

    Specification

    Signal Amplification Conversion Module

    Parameter Specification
    Input Voltage (VCC) 3.3V~5.5V
    Probe K Type Thermocouple
    Temperature Range -270°C~1372°C
    Resolution 0.25 °C
    Error within ≤ ±2°C(-200°C~700°C) ~ ±4°C(700°C~1350°C)
    Interfaces Gravity I2C (Logic Level 0-3.3V)
    Dimension 44.0mm * 22.0mm

    Armored K-Type Thermocouple Probe

    Parameter Specification
    Temperature Range 0 °C ~ 800 °C
    Error ≤ ±2.5°C
    Wire Length 1.5m
    Probe Length 50mm
    Probe Diameter Φ4mm
    Features Waterproof, Corrosion Resistant (Weak Acid or Alkali Resistant, Rustproof), High Temperature Resistance

    Pinout

    Label Name Description
    1 VCC Power VCC(3.3~5.5V)
    2 GND Power GND
    3 SCL I2C Clock Signal
    4 SDA I2C Data Signal
    5 BLUE- K type thermocouple negative electrode
    6 RED+ K type thermocouple positive electrode

    FAQ

    • Is there any way to change the address of the probe on the IIC bus? I had wanted to use two of these on my pool heater: one to monitor the pilot light and one to monitor the main burner, but it appears I am limited to only using one? Are there interface boards available with addresses other than 0x10?

      Cool application! The I2C address of this product is fixed. But the I2C Multiplexer will help you solve this problem. Please refer this link:https://www.dfrobot.com/wik...
      The I2C multiplexer will be on sale after few days.

    • Why my reading falls (even below zero degree) as the temperature becoming higher?
      The positive and negative connections of the probe may be reversed. Try to exchange them.

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