SKU: SENS-3022
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DFRobot Gravity Lab Grade Analog Dissolved Oxygen Sensor / Meter Kit For Arduino - Galvanic Probe, BNC Connector

₹23,309.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity Lab Grade Analog Dissolved Oxygen Sensor Kit is a galvanic probe-based meter designed for precise measurement of dissolved oxygen (DO) in water, featuring a 0-20 mg/L range and 0-3.0V analog output for seamless integration with Arduino, Raspberry Pi, and other 3.3V/5V microcontrollers.

Features

  • Galvanic probe design eliminates polarization wait time for immediate measurement.
  • 0-20 mg/L detection range with up to 98% full response within 90 seconds at 25°C.
  • 0-3.0V analog output compatible with any microcontroller ADC input.
  • Wide 3.3-5.5V power supply range for use with Arduino and industrial DAQ systems.
  • Replaceable membrane cap and filling solution for low long-term maintenance costs.

Out of stock

Description

This lab-grade dissolved oxygen sensor employs a galvanic cell principle, where an oxygen-permeable membrane allows dissolved oxygen to diffuse into an electrolyte, generating a current proportional to the oxygen concentration. This signal is conditioned into a stable 0-3.0V analog output, providing a linear representation of DO levels from 0 to 20 mg/L. The sensor is designed for continuous monitoring in aqueous environments.

The probe features a robust BNC connector interface and a 2-meter cable, facilitating integration into both portable and fixed monitoring stations. With an operational pressure rating of 0-50 PSI and a typical electrode service life of one year under normal use, it is engineered for reliability in demanding field and laboratory applications, from aquaculture to environmental science.

Key Features

  • Galvanic probe requires no external polarization voltage, enabling instant startup.
  • User-replaceable Teflon membrane cap and electrolyte solution minimize recurring costs.
  • Gravity-series 3-pin interface (PH2.0-3P) ensures plug-and-play connectivity with DFRobot shields and adapters.
  • High-stability analog output signal with low noise for accurate ADC readings.
  • Durable construction with a 2-meter shielded cable for flexible deployment.
  • Optimized performance-to-cost ratio for educational, research, and light industrial monitoring.

Applications

  • Aquaculture and fish farm water quality monitoring for optimal dissolved oxygen levels.
  • Environmental science field studies tracking DO in lakes, rivers, and wastewater.
  • Laboratory benchtop analysis for educational and research purposes.
  • Hydroponics and aquaponics system nutrient solution monitoring.
  • Industrial process water quality control and effluent monitoring.

Technical Specifications

BrandDFRobot
Product TypeGalvanic Probe DO Sensor Kit
Detection Range0 ~ 20 mg/L
Output Signal0 ~ 3.0V Analog
Operating Voltage3.3V to 5.5V DC
Response TimeUp to 98% full response within 90 seconds (at 25°C)
Pressure Range0 ~ 50 PSI
Probe ConnectorBNC
Interface ConnectorGravity (PH2.0-3P)
Cable Length2 Meters
Electrode Service Life1 year (normal use)

Frequently Asked Questions

What is the operating voltage range for this dissolved oxygen sensor kit?

The sensor kit operates on a wide DC voltage range from 3.3V to 5.5V, making it directly compatible with most 5V Arduino boards and 3.3V development platforms like Raspberry Pi and ESP32 without requiring a level shifter. Power is supplied via the Gravity interface's VCC pin.

How do I interface the sensor's output with my microcontroller?

The kit provides a 0-3.0V analog voltage output proportional to the dissolved oxygen concentration. Connect the sensor's signal wire (via the Gravity interface) to any analog-to-digital converter (ADC) input pin on your Arduino, ESP32, or other microcontroller. The output can be calibrated using provided software libraries to translate voltage to mg/L.

Does the galvanic probe require any special preparation or polarization time?

No. Unlike Clark-cell (amperometric) sensors, this galvanic probe design does not require a polarization period before use. It can provide stable readings immediately upon immersion, provided the membrane cap is correctly filled with electrolyte and the sensor is properly calibrated for your specific environment.

What maintenance is required, and how long does the electrode last?

Primary maintenance involves periodically refilling the electrolyte solution and replacing the oxygen-permeable Teflon membrane cap, which are user-serviceable components. Under normal operating conditions, the electrode itself has a typical service life of approximately one year before performance degradation may occur, making it a low-maintenance solution.

Package Includes

  • 1 x Gravity Lab Grade Analog Dissolved Oxygen Sensor Probe (with 2m cable)
  • 1 x Gravity Analog Signal Converter Board
  • 1 x Set of membrane caps and electrolyte solution (for initial use and replacement)
  • 1 x Gravity 3-pin connecting cable

Additional Information

Weight 0.267 kg
Dimensions 33 × 12 × 8 cm