SKU: SENS-3734
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Generic MAX6675 Module + K-Type Thermocouple Sensor w/ 50cm Cable

₹279.00 (Inclusive of all taxes)
Out of Stock

The MAX6675 Module provides a digital SPI interface for K-Type thermocouples, enabling high-temperature measurement up to 1024°C with cold junction compensation. It is directly compatible with 3.3V/5V microcontrollers like Arduino, Raspberry Pi, and ESP32 for industrial and prototyping applications.

Features

  • High-temperature measurement from 0°C to +1024°C with 0.25°C resolution.
  • Integrated MAX6675 IC provides cold junction compensation (-20°C to +80°C).
  • Simple 3-wire SPI serial interface for direct microcontroller connection.
  • Includes a robust K-Type thermocouple with 6mm threaded mount and ~50cm cable.
  • Features thermocouple break detection and high-impedance differential inputs.

Out of stock

Description

The MAX6675 thermocouple-to-digital converter module digitizes the analog signal from a K-Type thermocouple, providing a precise, temperature-compensated reading via an SPI-compatible serial interface. It integrates a cold junction compensation circuit to account for ambient temperature at the connection point, ensuring accuracy across its full operating range.

This module is designed for easy integration into data acquisition systems, industrial controls, and high-temperature monitoring projects. The included K-Type thermocouple probe features a 4.5mm diameter sensing tip with a 6mm threaded mounting bolt, suitable for direct installation into machinery, kilns, or extruders. The module operates from a 3.0V to 5.5V DC supply, making it compatible with both 3.3V and 5V logic systems.

Key Features

  • MAX6675-based digital converter with 12-bit resolution.
  • Integrated cold junction compensation for accurate ambient temperature correction.
  • Built-in thermocouple break detection circuitry for fault monitoring.
  • High-impedance differential inputs reject common-mode noise.
  • Simple 3-wire SPI interface (CLK, CS, SO) for microcontroller communication.
  • Supplied with a durable K-Type thermocouple probe and 50cm lead wire.
  • Wide operating voltage range (3.0V to 5.5V DC) for flexible system integration.
  • Robust construction suitable for industrial prototyping and high-temperature environments.

Applications

  • Industrial process monitoring for furnaces, kilns, and extruders.
  • High-temperature measurement in 3D printer hotends and CNC machines.
  • Prototyping thermal management systems for power electronics and motor drives.
  • Laboratory data acquisition and environmental chamber monitoring.
  • DIY projects requiring accurate temperature logging beyond standard IC sensor ranges.

Technical Specifications

Item TypeSensor Module
Model NameThermocouple Sensor Module
Core ICMAX6675
Sensor TypeK-Type Thermocouple
Operating Voltage3.0 VDC to 5.5 VDC
Temperature Range0°C to +1024°C
Cold Junction Compensation Range-20°C to +80°C
Resolution0.25°C
Output InterfaceSPI (3-wire: CLK, CS, SO)
Thermocouple Probe Diameter4.5 mm
Probe Mounting6 mm Threaded Bolt
Cable Length~50 cm
ESD Protection2000V

Frequently Asked Questions

What is the operating voltage range for the MAX6675 module?

The module operates from 3.0V to 5.5V DC. This range allows direct compatibility with both 3.3V logic systems (like Raspberry Pi or ESP32) and 5V systems (like standard Arduino boards) without requiring a level shifter.

How do I connect this module to an Arduino or other microcontroller?

Connect the module using its 3-wire SPI interface: CLK, CS, and SO pins to any digital I/O pins on your microcontroller. Power the module from the same 3.3V or 5V supply as your logic board. Libraries like 'max6675.h' for Arduino simplify reading the temperature data.

What is cold junction compensation and why is it important?

Cold junction compensation (CJC) corrects for the ambient temperature at the point where the thermocouple wires connect to the MAX6675 module. The integrated CJC circuit, valid from -20°C to +80°C, is essential for accurate absolute temperature readings, as thermocouples measure a differential temperature.

Can I use a different type of thermocouple (e.g., J-Type) with this module?

No, this module is specifically designed for use with K-Type thermocouples. The MAX6675 IC is calibrated for the Seebeck coefficient of K-Type wire. Using a different thermocouple type will result in significant measurement errors.

What does the thermocouple break detection feature do?

The embedded circuitry monitors the continuity of the thermocouple loop. If the thermocouple wire breaks or becomes disconnected, the module can flag a fault condition via its digital output, allowing your control system to alert an operator or enter a safe state.

Package Includes

  • 1 x MAX6675 Module
  • 1 x K-Type Thermocouple Probe (~50cm cable)
  • 4 x Female-to-Female Jumper Cables

Additional Information

Weight 0.05 kg
Dimensions 6 × 5 × 3 cm