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K type thermocouple interface with MAX31855 chip Adafruit Industries 3245 temperature sensor module

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K type thermocouple interface with MAX31855 chip Adafruit Industries 3245 temperature sensor module

Temperature Range : -100℃~+500℃

Description : -100℃~+500℃ Thermocouples, Temperature Probes RoHS

Mfr. Part # : 3245

Model Number : 3245

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Product Overview

The MAX31855 is a thermocouple interface chip designed to simplify the integration of K-type thermocouples for temperature sensing. Unlike semiconductor sensors, thermocouples are constructed from two welded metal wires, generating a small voltage proportional to temperature. The MAX31855 provides a digital output, eliminating the need for an Analog-to-Digital Converter (ADC) and handling the complexities of thermocouple measurement, such as the small voltage signals, non-linear response, and cold-temperature compensation. This makes it suitable for applications requiring a wide temperature range, including HVAC systems, heaters, boilers, and kilns. The MAX31855 breakout board is compatible with microcontrollers like Arduino and single-board computers running Python or CircuitPython.

Product Attributes

Brand: Adafruit
Type: K-type thermocouple interface
Wire Braiding: Glass overbraiding
Color Coding (typical): Red (Negative/Alumel), Yellow (Positive/Chromel)

Technical Specifications

Specification	Details
Thermocouple Type	K-type
Interface Chip	MAX31855
Wire Gauge	24 AWG
Wire Length	1 meter (can be cut)
Temperature Range (Thermocouple)	-200C to 1350C
Temperature Range (Glass Overbraiding)	-100C to 500C / -150F to 900F
Output Voltage Range (Thermocouple)	-6mV to +20mV
Precision (Thermocouple)	2C
Supply Voltage	3V - 5V
Interface Pins	CLK (Clock), DO (Data Out), CS (Chip Select)
Compatibility	Arduino, Python, CircuitPython
Grounded Thermocouples	Not supported
Noise Reduction (optional)	0.01uF capacitor across thermocouple leads (for noisy environments)

2504101957_Adafruit-Industries-3245_C17433866.pdf

K type thermocouple interface with MAX31855 chip Adafruit Industries 3245 temperature sensor module Images

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