Description
KMeterISO unitis an integrated K-type thermocouple sensor unit that integrates the functions of "acquisition + isolation + communication", using STM32F030+MAX31855KASA+T 14bit thermocouple digital conversion chip scheme to achieve high-precision temperature acquisition and conversion, MCU using STM32F030 to realize data acquisition and I2C communication interface, using CA-IS3641HW as a signal isolator. The unit supports access to thermocouple probes with a measurement range of -200°C to 1350°C, and adopts a universal standard K-type flat interface, which is convenient for subsequent replacement of different measuring probes to match different needs. This module is widely used in application scenarios such as temperature collection, control, and monitoring in industrial automation, instrumentation, power and electrical, heat treatment and other fields.
Features
STM32F030, high-performance ARM Cortex-M0 core, supports I2C firmware updates
MAX31855KASA+T: (14Bit ADC, 0.25°C Resolution, ±2% Accuracy)
Supported probe types: Type K - Supports access probe measuring range from -200°C to 1350°C
I2C communication interface addr: 0x66
Signal Isulate The CA-IS3641HW isolates input and output signals to improve stability, safety, and reliability.
Supported programming platforms: Arduino, UIFlow
Includes
1x KmeterISO Unit
1x K-type thermocouple probe (measuring range -50°C to 250°C, wire length 1m)
1x HY2.0-4P cable (20cm)
Applications
Industrial automation
Instrumentation
Power appliances
heat treatment
Specification

Resources
Parameters
MCU
STM32F030, ARM Cortex-M0，最高48MHz，64K flash，4K SRAM
Temperature sensor chip
MAX31855KASA+T
Signal isolation chip
CA-IS3641HW
resolution
14 bit
Thermocouple Operating temperature range
-200-1350°C
Thermocouple type
K
Maximum sample rate
10 Hz
SPI interface clock frequency range
Up to 5 MHz
Internal temperature sensor accuracy
±2°C
measurement accuracy
±2°C
Anomaly detection
Open, short, and thermocouple low voltages
STM32F030
ARM Cortex-M0，48MHz，64K flash，8K SRAM
i2c address
0x66
Product Size
56 * 24 * 9.6 mm
Package Size
136mm × 92mm × 13mm
Product Weight
10.1g
Package Weight
22ｇ
Related Link
Schematic
Module Size
Examples
Arduino
UIFlow
UIFlow Blocks
Init device I2C address
Get thermocoupie temperature
Get internal temperature
Get string thermocoupie temperature
Get string internal temperature
Is ready temperature measurement
Get device firmware version
Get device I2C slave address
Set device I2c slave address
LEARN AND DOCUMENTS