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Water quality sensor

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Types of water quality sensors

What is a water quality sensor?

The water quality sensors is a general term for multiple sensors that measure PH, residual chlorine, turbidity, suspended solids, COD, BOD, conductivity, and dissolved oxygen. Water quality does not refer to a specific day parameter, it contains multiple elements to measure water conditions.

Types of water quality sensors

Water quality is a general concept, and it covers a wide range. Therefore, building a complete water quality monitoring system is a complicated project. The good news is that with these eight JXCT water quality sensors and a water quality monitoring host, you can easily build your water quality monitoring system.

  • PH /ORP Sensor
  • Conductivity Sensor
  • Residual Chlorine Sensor
  • Turbidity Sensor
  • Dissolved Oxygen Sensor
  • COD Sensor
  • Ammonia Nitrogen Ion Sensor
  • Chlorophyll Sensor

PH /ORP Sensor

PH sensor

The PH value is an important indicator for monitoring industrial wastewater. In industrial wastewater, most microorganisms have an adaptation range of pH 4.5-9, and the most suitable pH range is 6.5-7.5. When the pH is lower than 6.5, the fungus starts to compete with the bacteria. When the pH reaches 4.5, the fungus will have a complete advantage in the biochemical tank, which will seriously affect the settlement of the sludge.

water EC sensor

water ec detector

Conductivity sensors can be divided into electrode-type conductivity sensors, inductive conductivity sensors, and ultrasonic conductivity sensors according to different measurement principles. Electrode type conductivity sensor adopts resistance measurement method according to electrolytic conduction principle. The inductive conductivity sensor realizes the measurement of liquid conductivity based on the principle of electromagnetic induction. Ultrasonic conductivity sensors measure conductivity according to the changes of ultrasonic waves in liquids, and the first two sensors are widely used.

Residual Chlorine Sensor

Chlorine Sensor is a kind of industrial water quality sensor. The chlorine electrode is made of high-purity platinum with high protection level and can work normally even in harsh environments. This residual chlorine sensor has two signal outputs, RS485 and analog. Widely use measuring chlorine levels in natural water, surface water, groundwater and aquaculture applications

Turbidity Sensor

The turbidity sensor is design and manufacture using the principle of scattered light turbidity measurement. Accurately measure the amount of light passing through the water to accurately measure the suspended solids in the water, and these suspended solids can reflect the pollution of the water body. In this way, the turbidity in the water sample is measured, and the final value is output after linearization processing. It is often used in the accurate measurement of rivers, sewage, and wastewater by water quality detectors.

Dissolved Oxygen Sensor

Dissolved oxygen sensor, Dissolved oxygen meter,Dissolved oxygen analyzer is one of the intelligent online chemical analysis instruments. It can continuously monitor data through the transmission output and connect the recorder to realize remote monitoring and recording. It can also be connected to the RS485 interface through the MODBUS-RTU protocol for easy connection Enter the computer to realize monitoring and recording.

Ammonia Nitrogen Sensor

ammonia nitrogen

The ammonia nitrogen electrode used in the water quality ammonia nitrogen sensor is a solid-state ion selective electrode made by hand, which can measure the total free ammonia nitrogen content in the water. Aqueous ammonia nitrogen sensor provides ammonia nitrogen ion measurement, which is simple, fast, economical and accurate. The aqueous ammonia nitrogen sensor is matched with a waterproof housing to convert the signal of the aqueous solution into a standard 485/4-20mA/0-10V signal through digital setting and analysis. The product does not need to be calibrated in one molding process and can be used immediately.

COD Sensor

Optical method online COD sensor is more economical and environmentally friendly than traditional chemical method. Small in size, easy to install, and can be used for continuous online water quality monitoring. Automatic compensation for turbidity disturbances, with automatic cleaning device, optional titanium alloy (corrosion resistant).

Chlorophyll Sensor

The chlorophyll (blue-green algae) water quality analyzer uses the characteristic that chlorophyll (blue-green algae) has absorption peaks and emission peaks in the spectrum, and emits monochromatic light in the spectrum absorption peak of chlorophyll (blue-green algae) to irradiate the water , The chlorophyll (blue-green algae) in the water absorbs the energy of monochromatic light, and releases a monochromatic light with another wavelength emission peak. The light intensity emitted by chlorophyll (blue-green algae) is proportional to the content of chlorophyll (blue-green algae) in the water. Proportional.


Water quality monitoring covers a wide range of areas, and different application sites need to monitor different parameters. For specific selection and operation, please contact us. We have professional technicians to provide you with the best matching plan. More water quality sensors information please check our pdf document.