The KMeterISO Unit is a temperature sensor featuring an I2C communication interface, utilizing an STM32F030 main control chip and a MAX31855KASA+T 14-bit thermocouple digital converter chip. This sensor is specifically designed for K-type thermocouples and supports probes with a measurement range of -200°C to 1350°C. It is ideal for industrial temperature sensing and constant temperature control or monitoring scenarios.

Features:

• STM32F030, high-performance ARM Cortex-M0 core, supports I2C firmware updates.
• MAX31855KASA+T: 14-bit ADC, 0.25°C resolution, ±2% accuracy.
• Supported probe types: Type K - measurement range from -200°C to 1350°C.
• I2C communication interface.
• Signal isolation: The CA-IS3641HW isolates input and output signals to improve stability, safety, and reliability.
• Supported programming platforms: Arduino, UIFlow.

Technical details:

• Manufacturer: M5Stack
• Manufacturer SKU: U133-V11
• MCU: STM32F030
• Microcontroller core: ARM Cortex-M0
• Clock speed: 48MHz
• Flash memory: 64KB
• SRAM: 4KB
• Temperature sensor chip: MAX31855KASA+T
• Signal isolation chip: CA-IS3641HW
• Resolution: 14-bit
• Thermocouple operating temperature range: -200 to 1350°C
• Thermocouple: Type K (chromium-nickel-molybdenum alloy wire as positive electrode and a nickel-aluminium alloy wire as negative electrode)
• Maximum sampling rate: 10 Hz
• Clock frequency range of SPI interface: Up to 5 MHz
• Accuracy of the internal temperature sensor: ±2°C
• Measurement accuracy: ±2°C
• Anomaly detection: open, short, and thermocouple low voltages
• I2C address: 0x66
• Dimensions: 56 x 24 x 9.6 mm
• Weight: 22g

Scope of delivery:

• 1x M5Stack KMeterISO Unit with thermocouple temperature sensor.
• 1x thermocouple sensor type K (measuring range -50°C to 250°C, wire length 1m).
• 1x HY2.0-4P cable (20cm).