DFRobot
Gravity: I2C High Temperature Sensor (K-Type, 800℃)
This Gravity I2C high-temperature sensor pairs a signal amplification module (MAX31855K) with a stainless steel sheathed K-type thermocouple probe for measur...
This Gravity I2C high-temperature sensor pairs a signal amplification module (MAX31855K) with a stainless steel sheathed K-type thermocouple probe for measuring temperatures up to 800 °C. The module converts the thermocouple's millivolt signal to a 14-bit digital reading over I²C, with cold-junction compensation built in.
The Gravity I²C interface makes wiring simple — just connect power, ground, SDA, and SCL to any 3.3 V or 5 V microcontroller. The module supports the full K-type range of −270 to 1,372 °C (with a compatible probe), and the included probe is rated to 800 °C.
Key Features
- MAX31855K Chip – 14-bit, 0.25 °C resolution digital temperature measurement
- Wide Temperature Range – Module supports −270 to 1,372 °C; included probe rated to 800 °C
- Gravity I²C Interface – Simple connection to Arduino, Raspberry Pi, and other controllers
- 3.3 V / 5 V Compatible – Works with a wide range of boards
- Swappable Probe – Compatible with any standard K-type thermocouple
Specifications
Signal Amplification Module:
- Input Voltage: 3.3–5.5 V
- Temperature Range: −270 to 1,372 °C
- Resolution: 0.25 °C
- Accuracy: ±2 °C (−200 to 700 °C), ±4 °C (700 to 1,350 °C)
- Interface: Gravity I²C (logic level 0–3.3 V)
- Dimensions: 44 × 22 mm
K-Type Thermocouple Probe (included):
- Temperature Range: Up to 800 °C
- Accuracy: ±2.5 °C
- Probe Length: 50 mm
- Probe Diameter: 4 mm
- Wire Length: 1.5 m
- Properties: Waterproof, corrosion-resistant, high-temperature resistant
Ideal For
- Electric ovens and furnaces
- Pottery kilns
- Gas flame temperature measurement
- Industrial and scientific high-temperature monitoring
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Cold-junction compensation
- Cold-junction compensation corrects for the temperature at the point where a thermocouple connects to the electronics. It matters because thermocouples measure temperature differences, so this correction is needed for more accurate real-world temperature readings.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- K-Type
- K-Type refers to a common thermocouple probe type made from specific metal alloys and suited to very high temperature measurement. It matters because the amplifier and the probe type must match; a K-Type amplifier is intended for K-Type thermocouples, not every thermocouple style.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- Thermocouple
- A temperature sensor made from two different metals that produces a very small voltage depending on temperature. Because the signal is tiny, it usually needs careful amplification and accurate measurement hardware.
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Supplier page — dfrobot.com
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