MAX31855K K型熱電偶感測器模組 SparkFun 原裝進口 Thermocouple Breakout

描述

MAX31855K K型熱電偶感測器模組 SparkFun 原裝進口 Thermocouple Breakout

SparkFun  MAX31855K K型熱電偶感測器模組 是一款簡單的14位分辨率，SPI兼容，串行接口熱電偶數字轉換器，可讀取多種溫度。熱電偶的工作原理是：取用兩條由異種金屬製成的導線，在兩端將它們連接起來，並在一端和另一端（“熱”端和“冷”端）之間形成溫度梯度。一旦做到這一點，就形成了電勢並且電流流動。SparkFun熱電偶分接器的一端採用標準的K型熱電偶，將測得的溫度數字化，然後通過SPI接口將數據發送到另一端，從而解釋數據並進行轉換以供您閱讀！

通過 MAX31855K K型熱電偶感測器模組 ，可在-200°C至+ 700°C的溫度範圍內讀取熱電偶的熱結點，精度為±2°C，而MAX31855K內部的冷結點的範圍僅可在-20°C至+ 85°C，同時保持±2°C的精度。MAX31855K使用內部溫度檢測二極管不斷測量冷端的溫度。MAX31855K需要+ 3.0V至+ 3.6V（額定+ 3.0V）的電源，最大功耗僅為1.5mA。

熱電偶分接器設計用於接受標準熱電偶連接器，以方便使用並與您可能已經擁有的探頭兼容。這些連接器不是必需的，您可以將熱電偶直接焊接到標有“ +”和“-”的通孔中。如果您決定將熱電偶直接焊接到分線板上，建議安裝熱電偶以消除應力，以免折斷細線。為此，在PCB頭對面提供了用於紮帶或繞線的槽口。

MAX31855K 硬體規格與特色

• 14位分辨率
• 兼容SPI的串行接口
• -200°C至+ 700°C溫度讀數，精度為±2°C
• 需要3.0V至3.6V（標稱+ 3.0V）
• 接受K型熱電偶

技術文件與資料

• 原理圖
• 鷹文件
• 聯播指南
• 數據表（MAX31855K）
• GitHub（設計文件）
• GitHub（庫和示例代碼）

SparkFun Thermocouple Breakout – MAX31855K

The SparkFun MAX31855K Thermocouple Breakout is a simple 14-bit resolution, SPI-compatible, serial interface thermocouple digitizer that makes reading a wide range of temperatures possible. A thermocouple works by taking two wires made of dissimilar metals, connecting them at the two ends, and making a temperature gradient between one end and the other (a ‘hot’ end and a ‘cold’ one). Once this is achieved, a voltage potential is formed and current flows. The SparkFun Thermocouple Breakout takes a standard Type-K thermocouple in one end, digitizes the temperature measured and sends that data out the other end via a SPI interface, thereby interpreting the data and translating it for you to read!

With the SparkFun Thermocouple Breakout, the thermocouple’s hot junction can be read from -200°C to +700°C with an accuracy of ±2°C while the cold junction, inside the MAX31855K, can only range from -20°C to +85°C while maintaining ±2°C accuracy. The MAX31855K constantly measures the temperature of the cold junction using an internal temperature-sensing diode. The MAX31855K requires a power source from +3.0V to +3.6V (+3.0V nominal) and only draws 1.5mA maximum.

The Thermocouple Breakout is designed to accept a standard thermocouple connector, for convenience and compatibility with probes you may already own. These connectors aren’t necessary, and you could solder a thermocouple directly into the through-holes labeled ‘+’ and ‘-’. If you decide to solder the thermocouple directly to the breakout board, it is recommended that the thermocouple be mounted for strain relief to avoid breaking the thin wires. Notches for a zip-tie or wire wrapping have been provided in the PCB opposite the header for this purpose.

Features

• 14-bit Resolution
• SPI-Compatible, Serial Interface
• -200°C to +700°C Temperature Reading with ±2°C Accuracy
• 3.0V to 3.6V (+3.0V nominal) Required
• Accepts Type-K Thermocouple