MAX31850K High-Precision Thermocouple Temperature Sensor Module (Type-K)

Description
The MAX31850K Thermocouple Temperature Sensor Module is a high-accuracy, industrial-grade temperature measurement solution designed specifically for Type-K (NiCr-NiAl) thermocouples. It integrates a precision 18-bit ADC with automatic cold-junction compensation, allowing direct and reliable temperature readings in degrees Celsius without external calibration circuitry.

This module is ideal for high-temperature and harsh environments such as furnaces, 3D printers, power systems, and laboratory setups. Using a 1-Wire digital interface, it enables multiple sensors to be connected in parallel on a single data line, similar to DS18B20 devices, greatly simplifying wiring in multi-point temperature monitoring systems.

The onboard signal conditioning and noise suppression circuitry ensure stable and accurate readings even in electrically noisy industrial environments.

Key Features

• Designed exclusively for Type-K thermocouples

• Built-in cold junction compensation (CJC) for accurate measurements

• 18-bit ADC resolution for ultra-fine temperature sensing

• High accuracy: ±0.25 °C in the −200 °C to +700 °C range

• Wide temperature detection range: −270 °C to +1372 °C (probe dependent)

• 1-Wire communication protocol, supports multiple devices on one bus

• Strong anti-interference design for industrial applications

• Compatible with 3.3 V and 5 V microcontroller systems

Technical Specifications

• Thermocouple Type: K-type (NiCr-NiAl)

• Measurement Range: −270 °C to +1372 °C

• Accuracy: ±0.25 °C (−200 °C to +700 °C)

• Resolution: 0.0078 °C (18-bit ADC)

• Cold Junction Compensation: Built-in (±1 °C typical)

• Interface: 1-Wire (standard timing)

• Supply Voltage: 3.0 V to 5.5 V

• Typical Conversion Time: 100 ms

• Module Size: 20.3 mm × 20 mm (with mounting holes)

Typical Applications

• Industrial furnaces and heat-treatment systems

• 3D printer nozzle and heated bed temperature control

• Power equipment temperature protection (transformers, cable joints)

• Laboratory high-temperature experiments

• Food processing, baking, and sterilization monitoring

Package Contents

• 1 × MAX31850K Thermocouple Sensor Module