The UNIT Kmeter is a K-type thermocouple sensor from M5Stack with I2C communication interface.

The hardware adopts ESP32-C3 main control + MAX31855KASA+T 14-bit thermocouple digital conversion chip. The internal ESP32-C3 integrated firmware communicates with the thermocouple digital IC to process the raw data and expose the I2C interface where the user can easily obtain the processed temperature data.

This product is specially designed for K-type thermocouples (included). The conversion chip supports thermocouple probes with a measuring range of -200C to 1350C, and adopts a general standard flat interface, which is convenient for subsequent replacement of different measurement probes with different ranges to match different needs. It is suitable for industrial temperature collection, monitoring and other scenes that have high requirements for temperature measurement range.

Features

• ESP32-C3 (supports I2C firmware update)
• MAX31855KASA+T:
• 14Bit ADC
• 0.25C resolution, accuracy 2%
• Support probe type: K type
• Support the measurement range of the connected probe -200C to 1350C
• I2C communication interface addr: 0x66

Package Contents

• 1x Kmeter Unit
• 1x K-type thermocouple probe (measuring range -50C to 250C, wire length 1m)
• 1x HY2.0-4P cable (20cm)

Specification

Resources

• Product Documentation
• Arduino Examples
• Kmeter UNIT auto AutoScaleGraph
• Kmeter UNIT get sample
• UNIT_KMeter – Lib