SKU: SENS-3074
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DFRobot Gravity I2C Ozone Sensor (0-10ppm) - Module w/ Gravity-4Pin Cable

₹6,299.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity I2C Ozone Sensor is an electrochemical gas sensor module providing accurate 0-10 ppm O3 concentration measurement via a digital I2C interface. Compatible with 3.3V/5V logic systems like Arduino, ESP32, and Raspberry Pi, it features a plug-and-play Gravity-4Pin connector for rapid integration into air quality monitoring projects.

Features

  • Electrochemical Ozone Sensing: Measures ambient O3 concentration from 0 to 10 ppm with a high resolution of 10 ppb.
  • Digital I2C Interface: Provides stable, noise-immune digital output via the standard Gravity-4Pin connector.
  • Wide Voltage Compatibility: Operates from 3.3V to 5.5V DC, making it suitable for both 3.3V and 5V microcontroller platforms.
  • Robust Environmental Specs: Operates from -20°C to +50°C and 15-95% RH (non-condensing) for reliable performance in varied conditions.
  • Extended Service Life: Features a sensor lifespan exceeding two years in typical air environments.

Out of stock

Description

This ozone sensor utilizes an advanced electrochemical sensing cell to detect and quantify ambient ozone (O3) levels. The cell generates a current proportional to the gas concentration, which is then conditioned and digitized by an onboard ASIC, providing a clean, calibrated I2C signal output. The module includes a white waterproof, breathable membrane to protect the sensing element from particulates and liquid splashes while allowing gas diffusion.

Designed for stability and low interference, the sensor requires an initial 24-48 hour warm-up period after first power-on to reach optimal performance. It features a fast response time of ≤90 seconds and includes built-in temperature compensation to maintain accuracy across its specified operating range. The compact form factor and included mounting hardware facilitate easy installation in portable monitors, HVAC systems, and indoor air quality stations.

Key Features

  • High-Precision Electrochemical Sensing: Delivers accurate, repeatable ozone measurements with 10 ppb resolution.
  • Gravity Plug-and-Play Interface: Simplifies wiring with the standardized 4-pin I2C connector and cable.
  • Optimized Signal Conditioning: Onboard circuitry ensures high anti-interference capability and stable output.
  • Durable Construction with Protective Membrane: The sensor is shielded by a waterproof, breathable PTFE membrane for extended field use.
  • Comprehensive Environmental Rating: Operates reliably across a broad temperature and humidity range for versatile deployment.

Applications

  • Portable and Fixed Indoor Air Quality (IAQ) Monitoring Stations
  • HVAC System Ozone Level Monitoring and Control
  • Industrial Workplace Safety and Ozone Leak Detection
  • Research and Environmental Studies on Atmospheric Ozone
  • Integration into Smart Home and Building Automation Systems

Technical Specifications

Detection GasOzone (O3)
Measuring Range0 to 10 ppm
Resolution0.01 ppm (10 ppb)
Output SignalI2C (Digital)
InterfaceGravity-4Pin
Operating Voltage3.3V to 5.5V DC
Warm-Up Time≤3 minutes (initial stabilization: 24-48 hrs recommended)
Response Time≤90 seconds
Recovery Time≤90 seconds
Operating Temperature-20°C to +50°C
Operating Humidity15% to 95% RH (non-condensing)
Storage Temperature-20°C to 50°C
Life Cycle>2 years (in air)
Dimensions (L x W)37 mm x 27 mm
Weight22 g

Frequently Asked Questions

What is the required warm-up time for this ozone sensor?

For initial use, a 24 to 48 hour warm-up period is recommended after first power-on to allow the electrochemical sensor to fully stabilize and provide accurate, long-term readings. After this initial stabilization, subsequent power cycles require a shorter warm-up of ≤3 minutes.

How do I connect this sensor to an Arduino or ESP32 board?

Connection is simplified using the included Gravity-4Pin I2C cable. Connect the cable's 4-pin end to the sensor and the other end to a microcontroller's I2C pins (e.g., SDA, SCL, VCC, GND). The module is compatible with 3.3V and 5V logic, so ensure your board's VCC matches the sensor's operating voltage (3.3V to 5.5V).

What are the key environmental limitations for using this module?

Avoid environments with strong convective air, corrosive gases, or high concentrations of organic vapors, as these can damage the sensor or cause zero-point drift. Do not remove the white waterproof membrane, submerge the module, or encapsulate it in resin. Operating range is -20°C to +50°C at 15-95% RH (non-condensing).

What is the resolution and output format of the sensor?

The sensor provides a digital I2C output with a resolution of 0.01 ppm (10 ppb). The onboard chip handles analog-to-digital conversion, delivering a calibrated ozone concentration value directly over the I2C bus, which minimizes noise and simplifies code integration compared to analog sensors.

Package Includes

  • 1x Ozone Sensor Module
  • 1x Gravity-4Pin I2C Cable
  • 1x M3*10 Nylon Post
  • 2x M3*5 Screws

Additional Information

Weight 0.022 kg
Dimensions 3.7 × 2.7 cm