{"product_id":"m5stack-max31855-isolated-k-type-thermocouple-unit","title":"M5Stack Kmeter Isolation Unit with Thermocouple Sensor (MAX31855)","description":"\u003ch2\u003eM5Stack MAX31855 Isolated K-Type Thermocouple Unit\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eM5Stack KMeter-ISO\u003c\/strong\u003e Unit combines K-type thermocouple acquisition, digital conversion, isolation, and I2C communication. It uses an STM32F030F4P6 controller, MAX31855KASA+T 14-bit thermocouple converter, and CA-IS3641HW signal isolation device.\u003c\/p\u003e\u003cp\u003eThe module supports K-type thermocouple probes across a specified -200°C to 1350°C range, while the included probe is rated for a narrower -50°C to 250°C range. The host reads temperature data through I2C at address 0x66.\u003c\/p\u003e\u003ch2\u003eMeasure High Temperatures with Replaceable K-Type Probes\u003c\/h2\u003e\u003cp\u003eK-type thermocouples are widely used for ovens, heat-treatment equipment, power electronics, machinery, and industrial process monitoring. Choose the probe construction, insulation, connector, and rated temperature for the actual environment rather than assuming every K-type probe can use the module's full converter range.\u003c\/p\u003e\u003ch3\u003e14-Bit Conversion and Fault Detection\u003c\/h3\u003e\u003cp\u003eThe MAX31855 path provides 0.25°C resolution and supports fault detection for conditions such as open circuit and short-circuit states. Use fault flags in firmware rather than treating every numeric reading as valid.\u003c\/p\u003e\u003ch3\u003eIsolated Signal Path\u003c\/h3\u003e\u003cp\u003eThe CA-IS3641HW isolation device improves separation between the sensing and controller sides. Complete system safety still depends on thermocouple insulation, grounding, supply ratings, creepage and clearance, enclosure design, and the voltages present at the measurement point.\u003c\/p\u003e\u003ch2\u003eValidate the Installed Temperature Chain\u003c\/h2\u003e\u003cp\u003eFinal accuracy depends on the thermocouple probe, cold-junction conditions, connector materials, cable routing, electrical noise, installation depth, thermal contact, and calibration. For process control or protection thresholds, compare the installed system with an appropriate reference method.\u003c\/p\u003e\u003cp\u003eTechnical setup details are available in the \u003ca href=\"https:\/\/docs.m5stack.com\/en\/products\/sku\/U133-V11\" target=\"_blank\" rel=\"noopener\"\u003eM5Stack KMeter-ISO documentation\u003c\/a\u003e.\u003c\/p\u003e","brand":"LogicBoundless","offers":[{"title":"Default Title","offer_id":49240504271063,"sku":"LB-M5-U133-V11","price":19.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/8952\/2135\/files\/1_bd1a56ab-cfd5-4dc2-9e35-ef6cf88c6a02.webp?v=1783243349","url":"https:\/\/logicboundless.com\/products\/m5stack-max31855-isolated-k-type-thermocouple-unit","provider":"LogicBoundless","version":"1.0","type":"link"}