The Gravity CT1780 is a cold-junction compensated thermocouple amplifier that makes monitoring extreme temperatures from -270℃ to +1372℃ straightforward and scalable. It accurately digitizes signals from a K-Type thermocouple, providing 0.25℃ resolution, and transmits the data over a simple 1-Wire communication bus. This 1-Wire protocol allows multiple sensors to be daisy-chained on a single data line, perfect for monitoring various zones in industrial ovens, ceramic kilns, or scientific flame analysis. An integrated DIP switch further simplifies identifying individual sensors in a multi-point network, making complex setups manageable.

Simplified Multi-Point Sensing with 1-Wire Protocol

Similar to the widely adopted DS18B20, the CT1780 amplifier utilizes the 1-Wire communication interface. This design drastically simplifies system wiring, requiring only a single data line to connect multiple sensors to a host controller. This architecture is ideal for projects that demand temperature monitoring across several distributed points over a wide area, as it conserves microcontroller I/O pins and reduces wiring complexity.

Effortless Sensor Identification with Onboard DIP Switch

A common challenge in multi-sensor arrays is identifying which physical sensor corresponds to a specific data reading. The CT1780 solves this by integrating an onboard DIP switch. In addition to the unique 64-bit address inherent to the 1-Wire protocol, this switch allows for the setting of a simple, user-defined address. When multiple CT1780 units are connected in parallel, this feature enables straightforward visual identification of the sensor currently providing the temperature reading, streamlining setup and debugging processes.

Ultra-Wide Measurement Range for Extreme Environments

Engineered for demanding thermal applications, the amplifier supports the full K-Type thermocouple measurement range from -270℃ to +1372℃. The onboard cold-junction compensation ensures high accuracy across this spectrum, achieving a measurement error of ≤±2℃ within the critical -200℃ to 700℃ range. With a 14-bit resolution (0.25℃), the module provides the precision needed for process control and monitoring in extreme temperature environments.

Specifications:

• Input Voltage: 3.3~5.5V DC
• Thermocouple Type: K Type
• Measurement Range: -270℃~+1372℃
• Operating temperature range of the amplifier board: -40℃~+125℃、
• Temperature measurement resolution: 14 bit/0.25℃
• Temperature measurement error: ≤±2℃（-200℃~700℃）, ±4℃（700℃~1350℃）
• Communication Interface: Gravity Single Bus
• Amplifier board size: 44*22mm

Applications:

• DIY Reflow Oven: Build a precise temperature controller for surface-mount soldering.
• Ceramic & Pottery Kiln: Monitor and log firing profiles to achieve perfect results.
• Metal Forging & Smelting: Keep a close eye on furnace temperatures for blacksmithing or casting projects.
• Custom BBQ & Smoker: Create a multi-zone temperature logger for ultimate control over your cooking.
• Scientific Research: Accurately measure flame temperatures or chemical reactions in a lab environment.

Documentations:

• Product wiki

Package Includes:

• 1 x Gravity: CT1780 1-Wire K-Type Thermocouple Amplifier 
• 1 x K Type Thermocouple
• 1 x Gravity 3pin cable