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...
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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 single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- 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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Sensors & Input
Supplier page — dfrobot.com
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DFR0558 gravity max31855k k type high temperature sensor dimension V1.0
Mechanical Drawings · 62.1 KB · Click any page to view full size
DFR0558 gravity max31855k k type high temperature sensor layout V1.0
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DFR0558 gravity max31855k k type high temperature sensor schematics V1.0
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DFR0558 gravity max31855k k type high temperature sensor datasheet V1.0
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