Online Sensors and Their Applications

Online Sensors and Their Applications

1. Need and Use of Online Sensors

  • Online sensors collect data from the surrounding environment and atmosphere for various applications.
  • Main objective: to detect and respond to changes in the environment.
  • Input from various sensors such as light, temperature, motion, and pressure.
  • Sensors can share data with other connected devices and management systems.
  • Useful for real-time data on temperature, pressure, humidity, and more.
  • Can measure object distances and provide real-time data.

2. Applications of Online Sensors

  • Used in healthcare, smartphones, wearables, and vehicle tracking.
  • Environmental field applications for testing parameters, water quality, and quantity.
  • Measurement of COD, BOD, TOC, groundwater quality, etc.
  • Monitoring of nutrients, salts, impurities in water, and more.
  • Used for traffic management in large cities.
  • Measurement of chlorine, sulfate, ammonia in wastewater.

3. Online Sensors Used in Environmental Engineering

Temperature Sensors

  • Thermocouple
  • Resistor temperature detector
  • Thermistor
  • IC (semiconductor)

Proximity Sensors

  • Inductive sensor
  • Ultrasonic sensor
  • Photoelectric sensor
  • Capacitive sensor

Pressure Sensor

Water Quality Sensors

  • Chlorine residual sensor
  • pH and conductivity sensor
  • Total organic carbon sensor
  • Oxygen reduction potential sensor
  • Turbidity sensor

Chemical Sensors

  • Chemical field effect transistor
  • Potentiometric sensor
  • Electrochemical gas sensor
  • Zinc oxide sensor
  • pH Glass electrode

Gas Sensors

  • CO2 detectors
  • CO detector
  • H2 sensor
  • Oxygen sensor
  • Electrochemical gas sensor
  • Gas detector
  • Ozone monitor
  • Nitrogen oxide sensor

Smoke Sensors

  • Optical smoke sensor
  • Ionization smoke sensor

Sensors Used in Wastewater and Water Field

Water and wastewater quality sensors are used for detection and monitoring.

Examples:

  • Chlorine Residual Sensor
  • TOC Sensor
  • Turbidity Sensor
  • Conductivity Sensor
  • pH Sensor
  • Oxidation Reduction Potential Sensor