# Gravity: CT1780 1-Wire K-Type Thermocouple Amplifier (-270°C to +1372°C Temp Range)

**Type:** Product page · **SKU:** SEN0656 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/dfrobot-gravity-ct1780-1-wire-k-type-thermocouple-amplifier-high-temperature-arduino.html ([markdown](https://core-electronics.com.au/dfrobot-gravity-ct1780-1-wire-k-type-thermocouple-amplifier-high-temperature-arduino.html.md))

Accurately measure extreme temperatures (-270°C to 1372°C) with the Gravity CT1780 1-Wire K-Type Thermocouple Amplifier. Ideal for ovens, kilns, and furnaces...

## Pricing

- **Price:** $33.40 (inc GST) — $30.36 AUD, exc GST

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 04 and Sep 08.

## Description

The Gravity CT1780 is a cold-junction compensated thermocouple amplifier that makes monitoring extreme temperatures from -270°C to +1372°C straightforward and scalable. It accurately digitizes signals from a K-Type thermocouple, providing 0.25°C 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.

Figure: Wiring Diagram of CT1780 amplifier & Arduino

**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°C to +1372°C. The onboard cold-junction compensation ensures high accuracy across this spectrum, achieving a measurement error of =±2°C within the critical -200°C to 700°C range. With a 14-bit resolution (0.25°C), the module provides the precision needed for process control and monitoring in extreme temperature environments.

![](https://dfimg.dfrobot.com/enshop/image/data/SEN0656/TEST_0x0.jpg.webp)

### Specification

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

 [Product wiki](https://wiki.dfrobot.com/_SKU_SEN0656_One_Wire_High_Temperature_Sensor__K-Type_)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0656-1.jpg)