• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Get free circuit help 24/7

New Projects | Privacy Policy | About us | Contact | Disclaimer | Copyright | Videos | Circuits for Beginners | Basic Circuits | Hobby Projects | Transistor Circuits | LED Drivers 

You are here: Home / Water Level Controller / How to Measure Dissolved Oxygen in Liquids

How to Measure Dissolved Oxygen in Liquids

Last Updated on April 19, 2020 by Swagatam 3 Comments

caution electricity can be dangerous

The post discusses a sensor device used for measuring the level or amount of dissolved oxygen in water and other fluids. The idea was requested by Mr. Amit

Technical Specifications 

I didn't find sensors or sensor modules for Dissolved Oxygen or pH readings for us to use with controllers for our projects. but we get sensors with controllers with display which are expensive.

Do you have any idea?

Thanks

Analyzing the Circuit Query

Sensors for measuring dissolved oxygen are available ready made in the market, one such example may be seen below:

The output can be easily integrated with an external amplifier circuit for the required conversions or displays.

If possible I'll try to update the info in my blog soon with all the details.

The Design

Today companies manufacture numerous types of sensors for measuring oxygen in water known as Dissolved Oxygen sensors, which you can use in water, chemical processor jobs, laboratory, and ecological .Dissolved oxygen (DO) is the expression or the evaluation of the oxygen dissolved in a unit volume of water, generally in units of mg/L or ppm.

The preferred sensing unit may comprise of 2 electrodes, an anode and cathode, in electrolyte and from the water in question by an oxygen permeable membrane, as observed in Figure 2.

Oxygen diffuses across the membrane and interacts with the cathode to a potential difference proportional to the oxygen diffused into the sensor.

DO sensors consequently basically determines the deficient strain of the oxygen in water; permits extra oxygen to across the membrane and more voltage to be generated. The current is then converted into a millivolt output, that could be assessed with a WSN wireless node.

The type of dissolved oxygen sensor shown above are quite ideal since the output can be quickly accessed and interfaced with any desired measuring instrument such as a millivoltmeter, LED bar graph meter, transistorized amplifier, opamp based amplifier etc for translating the collected data into the the required levels so that it can be assessed appropriately for the results.

The internal view of the above example sensor may be witnessed in the following image:

Sensor Setup

The shown outputs provides a direct readable data in the form of millivolts which could be used for for triggering an external electronic circuit stage.

You'll also like:

  • 1.  Make this Touch free Faucet Circuit for Hands-free Tap Control
  • 2.  Making a Float Switch Circuit for a Corrosion-free Water Level Control
  • 3.  Digital Clock Activated Water Level Controller Circuit
  • 4.  Car Tank Water Sensor Circuit
  • 5.  Industrial Tank water fill/drain controller Circuit
  • 6.  Automatic Evaporative Air Cooler Circuit

About Swagatam

I am an electronic engineer (dipIETE ), hobbyist, inventor, schematic/PCB designer, manufacturer. I am also the founder of the website: https://www.homemade-circuits.com/, where I love sharing my innovative circuit ideas and tutorials.
If you have any circuit related query, you may interact through comments, I'll be most happy to help!

Have Questions? Please Comment below to Solve your Queries! Comments must be Related to the above Topic!!

Subscribe
Notify of
3 Comments
Newest
Oldest
Inline Feedbacks
View all comments

Primary Sidebar

Calculators

  • 3-Phase Power (15)
  • 324 IC Circuits (19)
  • 4017 IC Circuits (52)
  • 4060 IC Circuits (25)
  • 555 IC Circuits (98)
  • 741 IC Circuits (19)
  • Arduino Engineering Projects (83)
  • Audio and Amplifier Projects (114)
  • Battery Chargers (82)
  • Car and Motorcycle (94)
  • Datasheets (46)
  • Decorative Lighting (Diwali, Christmas) (33)
  • Electronic Components (100)
  • Electronic Devices and Circuit Theory (36)
  • Electronics Tutorial (116)
  • Fish Aquarium (5)
  • Free Energy (34)
  • Fun Projects (13)
  • GSM Projects (9)
  • Health Related (20)
  • Heater Controllers (29)
  • Home Electrical Circuits (102)
  • How to Articles (20)
  • Incubator Related (6)
  • Industrial Electronics (28)
  • Infrared (IR) (40)
  • Inverter Circuits (98)
  • Laser Projects (12)
  • LED and Light Effect (93)
  • LM317/LM338 (21)
  • LM3915 IC (25)
  • Meters and Testers (65)
  • Mini Projects (148)
  • Motor Controller (67)
  • MPPT (7)
  • Oscillator Circuits (26)
  • PIR (Passive Infrared) (8)
  • Power Electronics (34)
  • Power Supply Circuits (77)
  • Radio Circuits (10)
  • Remote Control (48)
  • Security and Alarm (61)
  • Sensors and Detectors (120)
  • SG3525 IC (5)
  • Simple Circuits (75)
  • SMPS (29)
  • Solar Controllers (60)
  • Timer and Delay Relay (53)
  • TL494 IC (5)
  • Transformerless Power Supply (8)
  • Transmitter Circuits (40)
  • Ultrasonic Projects (16)
  • Water Level Controller (45)

Calculators

  • AWG to Millimeter Converter
  • Battery Back up Time Calculator
  • Capacitance Reactance Calculator
  • IC 555 Astable Calculator
  • IC 555 Monostable Calculator
  • Inductance Calculator
  • LC Resonance Calculator
  • LM317, LM338, LM396 Calculator
  • Ohm’s Law Calculator
  • Phase Angle Phase Shift Calculator
  • Power Factor (PF) Calculator
  • Reactance Calculator
  • Small Signal Transistor(BJT) and Diode Quick Datasheet
  • Transistor Astable Calculator
  • Transistor base Resistor Calculator
  • Voltage Divider Calculator
  • Wire Current Calculator
  • Zener Diode Calculator

© 2023 · Swagatam Innovations

wpDiscuz