HKD MAX31855 K Type Thermocouple Module SPI 14 Bit

The HKD MAX31855 Thermocouple Module is a digital temperature measurement module designed for use with K-type thermocouples. Based on the MAX31855, the module converts the thermocouple signal into a digital temperature value, allowing it to be connected directly to a compatible microcontroller or development board through an SPI interface.

The module supports a wide measurement range from -200 C to 1350 C, making it suitable for temperature monitoring in applications ranging from general electronics and laboratory projects to heating systems, ovens and other high-temperature environments.

With 14-bit resolution and a specified resolution of 0.25 C, the module provides detailed digital temperature measurements without requiring a separate external amplifier or ADC. The module also provides an internal temperature reading.

The board operates from a 3-5V DC supply and is designed to be compatible with corresponding 3-5V logic levels. Its SPI output requires only three digital I/O pins, making it convenient to integrate with many microcontroller and development-board projects.

Key Features

• MAX31855 K-type thermocouple module
• Designed for K-type thermocouples
• Wide temperature measurement range
• Measures from -200 C to 1350 C
• SPI digital interface
• High-speed data transmission
• Direct digital temperature output
• No external amplifier required
• No external ADC required
• 14-bit resolution
• 0.25 C temperature resolution
• Internal temperature reading
• 3-5V DC power supply
• 3-5V logic-level compatible
• Requires three digital I/O pins for SPI data output
• Suitable for microcontroller and development projects

Technical Specifications

• Product Code: HKD MAX31855 THERMOCOUPLE MODUL
• Module Type: K-Type Thermocouple Module
• Controller: MAX31855
• Thermocouple Type: K Type
• Temperature Measurement Range: -200 C to 1350 C
• Resolution: 14-bit
• Temperature Resolution: 0.25 C
• Interface: SPI
• Power Supply: 3-5V DC
• Logic Level: 3-5V compatible
• Digital I/O Required: 3 pins for SPI data output
• Temperature Reference: Internal temperature reading

Wide Temperature Measurement Range

The HKD MAX31855 module supports temperature measurements from -200 C to 1350 C, providing a wide operating range for applications requiring temperature monitoring across both low and high temperatures.

This broad range makes the module suitable for temperature measurement projects involving heating equipment, high-temperature experiments and other applications where conventional low-temperature sensors may not be suitable.

K-Type Thermocouple Compatibility

The module is designed to work with K-type thermocouples. K-type thermocouples are commonly used for measuring a wide range of temperatures and are available in numerous probe configurations for different applications.

The supplied specifications state that the module works with any K-type thermocouple, provided the thermocouple is suitable for the intended application.

The actual temperature accuracy of a K-type thermocouple depends on the thermocouple itself and other factors. The supplied information indicates an approximate K-type thermocouple accuracy of 2 C to 6 C.

Digital Temperature Output

The MAX31855 provides a direct digital temperature output, eliminating the need for a separate external signal amplifier or analogue-to-digital converter.

This simplifies the design of projects where a microcontroller needs to read temperature data from a K-type thermocouple.

The digital output can be processed by a compatible microcontroller or development board using the module's SPI interface.

SPI Interface

The module uses an SPI interface for communication with the host controller.

The supplied specifications indicate that the SPI data output requires three digital I/O pins, making the module straightforward to integrate into suitable development projects.

SPI communication also provides high-speed transmission of the digital temperature data.

14-Bit Resolution

The module provides 14-bit resolution, with a stated temperature resolution of 0.25 C.

This allows the connected controller to receive temperature measurements with fine digital increments, making the module suitable for applications where detailed temperature monitoring is required.

Internal Temperature Reading

In addition to measuring the connected K-type thermocouple, the module provides an internal temperature reading.

This can be useful when monitoring the temperature of the module itself as part of temperature measurement and compensation functionality.

Power and Logic Compatibility

The HKD MAX31855 module operates from a 3-5V DC power supply and is specified as being compatible with 3-5V logic levels.

This makes it suitable for integration with a range of compatible microcontroller and development-board platforms.

Always verify the electrical requirements of the specific host controller before connecting the module.

Applications

The HKD MAX31855 K-Type Thermocouple Module is suitable for:

• Temperature monitoring
• High-temperature measurement
• Arduino-compatible projects
• Microcontroller projects
• Electronics prototyping
• STEM and educational projects
• Laboratory temperature monitoring
• Heating system monitoring
• Oven temperature measurement
• Industrial temperature monitoring
• HVAC and equipment monitoring
• DIY temperature sensors
• Embedded temperature measurement
• High-temperature experiments
• Data-logging projects

Example Project Uses

The module can be integrated into projects where a controller needs to monitor temperature from a K-type thermocouple, including:

• Temperature-controlled heating systems
• Digital thermometers
• Oven monitoring systems
• 3D printer temperature monitoring
• Laboratory equipment
• Heating element controllers
• Temperature data loggers
• Embedded monitoring systems

Actual suitability depends on the thermocouple, host controller and requirements of the specific application.

Package Contents

• 1 × HKD MAX31855 K-Type Thermocouple Module

Note: K-type thermocouple probe is not specified as included.

Important Notes

• The module is designed for K-type thermocouples only.
• The stated measurement range is -200 C to 1350 C.
• The module itself does not guarantee 0.25 C absolute temperature accuracy. The supplied 0.25 C specification refers to temperature resolution, while K-type thermocouple accuracy is stated as approximately 2 C to 6 C.
• A compatible K-type thermocouple is required for temperature measurement.
• The module operates from 3-5V DC.
• SPI communication requires three digital I/O pins according to the supplied specifications.
• Verify the wiring and logic-level requirements of the connected controller before use.

What's in the box
1 x HKD MAX31855 K Type Thermocouple Module SPI 14 Bit