DEC890 Digital Conductivity Sensor Introduction

Measuring wastewater turbidity is a critical component of wastewater treatment, environmental monitoring, and water quality management. By quantifying wastewater turbidity, it indirectly assesses water quality, guides treatment process optimization, and protects the ecological environment and human health. Turbidity is essentially the ability of wastewater to scatter and absorb light. The turbidity value directly reflects the content of suspended particulate matter(SS), colloids, microorganisms, or attached pollutants in the wastewater. These substances are often carriers or direct sources of water pollution. Therefore, turbidity has become a simple yet effective indicator for assessing the extent of wastewater pollution and treatment effectiveness. High turbidity indicates that the wastewater contains more impurities such as sediment, industrial waste, biosludge, and pathogens, indicating poore water quality. Turbidity sensors are widely used in wastewater monitoring. The current mainstream turbidity measurement principle is scattering light. The core principle is that higher turbidity indicates greater light scattering by particulate matter. The turbidity level can be inferred from intensity of the turbidity scattered light, in line with the definition of turbidity in international standard ISO7027. This NTU model turbidity sensor is from the Aqualabo brand. Its advantages are as following:

• Based on IR nephelometry ISO7027/850nm
• The turbidity probe can be calibrated with a formazine standard solution
• Integrate a low-cost optical technology, with a very few maintenance and no consumables
• The measuring range of the NTU turbidity sensor is 0~4000NTU and 0~4500mg/L
• IP68 protection grade, can work under water continuously
• Ultra low-power consumption, can be used with the portable device