Turbidity measurement to ensure quality and process control in a wide range of applications such as drinking water production, effluent monitoring and sludge concentration measurement in wastewater treatment plants, monitoring seawater inlets in desalination projects or detecting crop losses in Farms are essential.
How to choose turbidity sensors
Turbidity sensors and transmitters are used in water, sewage, food and beverage, chemicals, life sciences, power and.. Use suspended solid sensors to measure high turbidity, for example in sewage. For applications with high oscillation turbidity, use absorption sensors to achieve unambiguous measurement results.
Measurements in the manner of solids and suspended solids
Solid solid state sensors or suspended solid state sensors use the diffused backlight method. They have an LED lamp and two light detectors located at 90 and 135 degree angles. Solid particles in the environment scatter random light emitted from the lamp. The amount of turbidity or solidity of the environment is calculated from the amount of scattered light received by the detectors. A transmitter displays the final solid or suspended value in the desired unit, such as g / l or ٪ TS.
Turbidity measurement with nephelometric sensors
Nephlometry-based sensors measure turbidity according to ISO 7027 / EN 27027. They have an LED lamp and a light detector located at a 90 degree angle. This beam lamp emits radiation into the environment as soon as it strikes a particle in a specified area. The detector converts the received light intensity into an electrical signal. This signal is then translated to the final opacity value and can be displayed by the sender in the desired unit.
Measurement of turbidity with absorption sensors
Absorption sensors measure the amount of light absorbed by particles in an environment. They have an LED lamp and a light detector located directly in front of the lamp. Between them, the particles in the ambient light attenuate the emitted light, which is first converted into an electrical signal by the detector and then into the final opacity. Advanced sensors have a second lamp detector layout using different path lengths, thus improving measurement reliability.
Advantages of turbidity sensor
- Turbidity sensor probes provide you with complete flexibility. Install them directly in the pipe or in a flow set for fast in-line measurement without losing the product, or install them with a holder in any open channel, pond or tank.
- Turbidity transmitters process the signal for measuring each turbidity and display it according to your preference: as FNU (Formazin Nephelometric Unit), FTU (Formazin Turbidity Unit), NTU (Nephelometric Turbidity Unit) and others.
- Choose from a wide range of turbidity assemblies for all applications: fixed installation assemblies, immersion assemblies, flow assemblies and retractable assemblies.
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