{"id":120,"count":5,"description":"

The turbidity sensors<\/strong> They allow for the continuous measurement of the amount of suspended particles in water and other liquids using an optical system. At GUEMISA we offer Industrial turbidity sensors, online turbidimeters and submersible probes<\/strong> for the control of drinking water, wastewater, industrial processes, reservoirs, canals and filtration systems.<\/p>\r\n\r\n

We offer solutions for direct installation in pipes or immersion, with different measurement ranges and outlet options such as 4\u201320 mA, RS485 and Modbus RTU<\/strong>. Our sensors use nephelometric methods and infrared technology in accordance with ISO 7027<\/strong>, reducing the influence of sample color and ambient light. We also offer models with cleaning systems for applications where solids or dirt may accumulate on the optical surface.<\/p>\r\n\r\n

What is a turbidity sensor?<\/h2>\r\n\r\n

A turbidity sensor is an optical instrument that determines the loss of transparency in a liquid caused by suspended particles. These particles can be clays, silts, organic matter, microorganisms, precipitates, industrial process residues, or other solids present in the water.<\/p>\r\n\r\n

Turbidity is usually expressed in NTU<\/strong> \u2014nephelometric turbidity units\u2014 or in equivalent units defined by the measurement method used. It should not be confused directly with the concentration of suspended solids, since particles of different size, shape, composition, or color can produce different optical responses even when their mass concentration is similar.<\/p>\r\n\r\n

How does turbidity measurement work?<\/h2>\r\n\r\n

Turbidity sensors incorporate a light source and one or more optical detectors. The light is projected onto the liquid, and suspended particles cause it to scatter. In nephelometric systems, the detector typically measures the light scattered at a 90-degree angle to the incident beam.<\/p>\r\n\r\n

Sensors based on ISO 7027<\/strong> They typically use an infrared source near 860\u2013890 nm. This technology reduces the influence that the color of the water can have on the result and is suitable for the continuous monitoring of numerous water treatment and distribution processes.<\/p>\r\n\r\n

Types of turbidity sensors<\/h2>\r\n\r\n

Online turbidity sensors<\/h3>\r\n\r\n

Inline sensors are installed directly in a pipe, flow cell, or process bypass. They allow for continuous measurement without the need for manual sampling and are suitable for:<\/p>\r\n\r\n

    \r\n
  • drinking water control;<\/li>\r\n
  • filtration processes;<\/li>\r\n
  • process water quality control;<\/li>\r\n
  • detection of filter breaks or saturation;<\/li>\r\n
  • food and beverage industry;<\/li>\r\n
  • chemical and pharmaceutical processes;<\/li>\r\n
  • cooling circuits and water reuse.<\/li>\r\n<\/ul>\r\n\r\n

    Submersible turbidity probes<\/h3>\r\n\r\n

    Submersible probes are inserted directly into tanks, ponds, canals, or reactors. They are especially useful in wastewater treatment plants, sewage systems, and environmental applications.<\/p>\r\n\r\n

    In environments with a high concentration of solids or biological growth, it is advisable to use a sensor with a self-cleaning system or to plan for periodic cleaning of the optical window. The accumulation of dirt on the sensor can cause a gradual drift in the measurement.<\/p>\r\n\r\n

    How to choose a turbidity sensor<\/h2>\r\n\r\n

    To select the appropriate model, both the expected turbidity range and the actual installation conditions must be considered.<\/p>\r\n\r\n

      \r\n
    • Measuring range:<\/strong> A clean water circuit does not require the same sensor as an application with wastewater or a high concentration of solids.<\/li>\r\n
    • Installation type:<\/strong> It must be determined whether the measurement will be performed in a pipe, flow cell, tank, open channel, or direct immersion.<\/li>\r\n
    • Optical method:<\/strong> For many water applications, nephelometric measurement using infrared light in accordance with ISO 7027 is recommended.<\/li>\r\n
    • Electrical outlets:<\/strong> Analog signals of 4\u201320 mA or digital communications such as RS485 and Modbus RTU can be used to integrate the sensor into a PLC, recorder or SCADA system.<\/li>\r\n
    • Pressure and temperature:<\/strong> In an online installation, it is necessary to check the maximum pressure, the process temperature, and the compatibility of the sensor materials.<\/li>\r\n
    • Materials:<\/strong> In the presence of aggressive chemicals or liquids, bodies made of PVC, PVDF or other resistant materials may be necessary.<\/li>\r\n
    • Cleaning and maintenance:<\/strong> Applications involving sludge, organic matter, or scale may require automatic cleaning using compressed air, a brush, or another specific system.<\/li>\r\n
    • Controller or transmitter:<\/strong> Some sensors directly incorporate industrial outputs, while others must be connected to a compatible transmitter.<\/li>\r\n<\/ul>\r\n\r\n

      4\u201320 mA, RS485 and Modbus RTU outputs<\/h2>\r\n\r\n

      An exit from 4\u201320 mA<\/strong> It allows for robust long-distance transmission of turbidity measurements and connection to indicators, PLCs, recorders, or industrial control systems. It is a simple and widely used solution in automation.<\/p>\r\n\r\n

      Communication RS485 with Modbus RTU protocol<\/strong> It allows for the digital transmission of measurements and, depending on the model, the consultation of configuration parameters, diagnostics, or sensor status. It also facilitates the connection of multiple instruments within the same communications network.<\/p>\r\n\r\n

      Applications of turbidity sensors<\/h2>\r\n\r\n
        \r\n
      • drinking water control and distribution networks;<\/li>\r\n
      • drinking water treatment plants;<\/li>\r\n
      • wastewater treatment plants;<\/li>\r\n
      • control of filters and separation processes;<\/li>\r\n
      • measurement in reservoirs, ponds and canals;<\/li>\r\n
      • control of spills and process water;<\/li>\r\n
      • food and beverage industry;<\/li>\r\n
      • chemical and pharmaceutical processes;<\/li>\r\n
      • environmental monitoring of rivers and surface waters;<\/li>\r\n
      • water reuse and recovery systems.<\/li>\r\n<\/ul>\r\n\r\n

        Calibration and maintenance<\/h2>\r\n\r\n

        The frequency of cleaning and calibration depends on the type of water, the measurement range, and the accumulation of dirt on the optical surface. To maintain stable measurements, it is important to periodically inspect the sensor, clean the optical window according to the manufacturer's instructions, and use appropriate turbidity standards when it is necessary to verify or adjust the equipment.<\/p>\r\n\r\n

        In critical installations, the condition of the wiring, the absence of bubbles in the flow cells, the correct orientation of the sensor, and that the hydraulic conditions are representative of the process must also be checked.<\/p>\r\n\r\n

        B&C Electronics Turbidity Sensors<\/h2>\r\n\r\n

        GUEMISA distributes solutions for B&C Electronics<\/strong> For continuous turbidity measurement in water and industrial process applications. The range includes in-line sensors and submersible probes, with different ranges, materials, mounting systems, and integration options for control systems.<\/p>\r\n\r\n

        We can help you select the necessary sensor, transmitter, and accessories based on the turbidity range, liquid type, mechanical installation, pressure, temperature, and required output signal.<\/p>\r\n\r\n

        Frequently asked questions about turbidity sensors<\/h2>\r\n\r\n

        What is the difference between turbidity and suspended solids?<\/h3>\r\n\r\n

        Turbidity is an optical measure related to the scattering of light by particles. Suspended solids are typically expressed as a mass concentration. A correlation can be established between these two measures for a specific liquid, but there is no universal equivalence valid for all applications.<\/p>\r\n\r\n

        What turbidity range do I need?<\/h3>\r\n\r\n

        It depends on the process. Drinking water and filtration processes usually require good resolution at low values, while wastewater, sludge, or certain industrial processes may need much wider ranges.<\/p>\r\n\r\n

        Is an in-line or submersible sensor better?<\/h3>\r\n\r\n

        An in-line sensor is suitable for pipes and closed circuits. A submersible probe is more appropriate for open tanks, ponds, channels, or reactors. The choice also depends on cleaning and maintenance requirements.<\/p>\r\n\r\n

        Can I connect the sensor to a PLC?<\/h3>\r\n\r\n

        Yes. Models with a 4\u201320 mA output can be connected to a compatible analog input. Sensors with RS485 and Modbus RTU can be integrated into PLCs, data loggers, and SCADA systems that support that protocol.<\/p>\r\n\r\n

        Do the sensors need cleaning?<\/h3>\r\n\r\n

        Yes. Dirt deposited on the optical window can affect the measurement. The cleaning frequency depends on the application and can be reduced by using models with self-cleaning systems.<\/p>\r\n\r\n

        Advice on selecting the right sensor<\/h2>\r\n\r\n

        To recommend a solution, we need to know the approximate turbidity range, the type of water or liquid, the planned installation, the operating pressure and temperature, the output signal, and the cleaning requirements. Contact GUEMISA and our technical team will help you select the right solution. turbidity sensor<\/strong> more suitable for your application.<\/p>","link":"https:\/\/guemisa.es\/en\/categoria\/turbidez\/","name":"Turbidity Sensors","slug":"turbidity","taxonomy":"categoria","parent":43,"meta":[],"_links":{"self":[{"href":"https:\/\/guemisa.es\/en\/wp-json\/wp\/v2\/categoria\/120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guemisa.es\/en\/wp-json\/wp\/v2\/categoria"}],"about":[{"href":"https:\/\/guemisa.es\/en\/wp-json\/wp\/v2\/taxonomies\/categoria"}],"up":[{"embeddable":true,"href":"https:\/\/guemisa.es\/en\/wp-json\/wp\/v2\/categoria\/43"}],"wp:post_type":[{"href":"https:\/\/guemisa.es\/en\/wp-json\/wp\/v2\/productos?categoria=120"},{"href":"https:\/\/guemisa.es\/en\/wp-json\/wp\/v2\/documentos-pdf?categoria=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}