Visolid 700IQ suspended solids concentration online sensor

characteristic

·Ultrasonic cleaning technology

·Compliant with EN ISO 7027

·Using precision optical components

·The optical lens is made of wear-resistant sapphire

·Electrode self checking function, good long-term stability

·Strictly and accurately calibrated before leaving the factory

·No wear parts

·Maintenance Province

Turbidity and suspended solids are two important indicators for water quality monitoring. Online testing of turbidity and suspended solids usually uses infrared light scattering method, which is mainly used in surface water, aeration tanks, tap water, circulating water, sewage treatment plants, sludge reflux control, and discharge monitoring.

New turbidity and suspended solids probe

VisoTurbandViSolidThe successful launch of the probe has been announcedWTWTruly possessing their own optical sensors, namely turbidity and suspended solids probes. These probes are equipped with ultrasonic cleaning components to ensure long-term reliable operation and only require maintenance.WTWThe turbidity probe adopts the scattered light turbidity method, which is consistent withENISO 7027Standard regulations. The suspended solid probe adopts the scattered light testing method. Another major feature of the above-mentioned probes is that their testing range is very wide,VisoTurbturbidity0-4000 FNU，ViSolidSuspended solids0-300g/l SiO₂The instrument has a dynamic range switching function to achieve resolution. Therefore, using only two probes can test almost all samples, from drinking water to viscous sludge.

Principle of suspended solid concentration testing

As the concentration of suspended solids continues to increase, suspended particles in water will interact with each other. On the one hand, incident light cannot reach all particles, and on the other hand90The scattered light in that direction will be blocked by a large number of particles, making it undetectable. Therefore, when testing high concentrations, it is necessary to test the scattered light in the other direction in a different way.WTWTwo methods are used to test the concentration of suspended solids, and at lower concentrations60Scattered light, used at high concentrations180Degree backlit light.

Ultrasonic automatic cleaning system

sensorThere is an ultrasonic generator on top, as long assensorWhen connected to the system, high-frequency ultrasonic signals are generated, causing the optical lens to vibrate continuously with an amplitude of several micrometers. In the center of the lens, the amplitude. This can prevent any form of pollutants from accumulating on the lens, ensuring continuous and reliable operation. Some calcium salts will still adhere to the probe over time, forming dirt that is difficult to remove even with a brush or other cleaning agents, and can only be removed by acid washing. Ultrasonic vibration can also prevent bubbles from accumulating in the testing area and interfering with the test, as bubbles also scatter some light.

Nourishing the province

·Compared to traditional probes with scraping blades,WTWThe surface of the probe is very smooth and flat, and dirt is not easily attached to the surface of the lens.

·The continuous ultrasonic cleaning system prevents pollutants from adhering to the probe surface from the beginning and can also eliminate bubble interference.

Therefore, this probe has a wide range of applications and can be used continuously for several timescircumferenceReliable operation, no maintenance or cleaning required.

The sturdy structure and effective ultrasonic cleaning make our turbidity and suspended solids probes very suitable for environments like sewage treatment plants

use. Accurate testing and low maintenance are its main features.

correct

For today's sludge treatment, suspended solids concentration is a very important process parameter. It is impossible to use the continuous weight method for analysis in sewage treatment plants. The principle of using scattered light or absorbed light to measure total suspended solids online has good correlation with weight analysis under normal conditions. Regarding sludge particles, they are always different–Users can customize multi-point calibration for measurement based on different colors, particle sizes, and structures.

For important and commonly used sludge characteristics,WTWBuilt in two types of matrices-By using this storage data, even if users do not perform on-site calibration, good correlation with total suspended solids can be obtained. Built in two commonly used calibration curves:

-type1: Suitable forActivated sludge and return sludge from sewage treatment plantsAt the outlet of the primary sedimentation tank, the measurement range is0-25g/l SiO₂

-type2Suitable for raw sludgedigestionDegradable sludge and regenerated sludge, with a measurement range of15-300g/l SiO₂

The VisoLid 700 IQ is a drift free sensor designed with optical and electronic stability. If the above standard curve cannot meet the requirements for use,userIt can also be doneCustom labelPositive: Input correction factors for adjustmentSingle or multiple pointscorrecting.

ViSolid ® 700 IQThe main characteristics of：

·High precision measurement of 860nm dual near-infrared light

·Measurement range: 0.003-1000g/l

·The accuracy is 2% of the reading

·Resolution reached0.1mg/L

·The reaction time can be adjusted:1-300second

·Correction: CompliantDIN38414require

·Built in two calibration measurement curves, suitable for various process points in sewage treatment plants, to achieve accurate measurement; Users can also perform multi-point calibration

·Cleaning: Continuous automatic/ultrasonic
The sensor adopts a non mechanical ultrasonic self-cleaning design to ensure self-cleaning effect, and at the same time:1.Reduced electrode maintenance and repair issues caused by mechanical devices;2.The smooth surface of the sensor avoids the accumulation of dirt and reduces the occurrence of reading errors and malfunctions. Low maintenance costs

·Optical window: Sapphire mirror, good optical properties, sturdy and durable

·Shell material: stainless steel/POM

· IQseries,The controller can1Drag multiple sensors! Can simultaneously connect sensors with multiple parameters for measurement, such as measuringDO、 Nitrate nitrogen PH/ORP、 Conductivity, ammonia nitrogen, UV-COD and other sensors;

·Self detection, data storage, and alarm setting functions

·Suitable for: locations such as aeration tanks, return sludge, concentration tanks, dewatering machines, etc. in sewage treatment plants

Application of sewage treatment plant

Testing of suspended solids

ViSolid 700IQ suspended solid concentration sensor uses scattered light method to test total solid concentration

Ultrasonic cleaning function

The ViSolid 700IQ suspended solids concentration sensor is equipped with ultrasonic cleaning function, so the maintenance of the electrode is minimal, and it can also reduce the interference on the electrode during testing, resulting in higher testing accuracy and ensuring long-term reliable operation of the electrode

Automatic range selection function

The automatic range selection function enables the instrument to automatically select the range resolution within its testing range, with a wide testing range (0-300 g/l SiO2 and 0-1000 g/l TSS related to sludge media)

Electrode self-monitoring function

The sensor integrates a self detection function, which continuously detects electrodes and records all faults caused by the test medium. This function also continuously monitors the ultrasonic cleaning system

Sensor installation

The Visolid 700 IQ suspended solids sensor adopts scattered light testing technology, which has special requirements for the testing position and electrode installation.

When testing samples with low suspended solids concentration（<2 g/l SiO2 or<1 g/l TSS), the vast majority of infrared light passes through the sample, with only a small amount of light scattered. Therefore, even small changes in the surrounding environment can significantly alter the test values. The light reflected or scattered by the groove wall or pool bottom will also reach the detector, causing the test value to be biased, especially direct sunlight will seriously interfere with the test. However, by correctly installing the sensor, it is possible to avoid stray light interference as much as possible, so choosing the installation method is crucial when testing low turbidity.

There is an arrow mark on the electrode body, and the infrared test beam is emitted from the top of the electrode at a small angle along this surface. When the electrode rotates around the axis, the incident angle of infrared light with the cell wall or bottom will change, which means that the degree of stray light influence will change. It is recommended to rotate the sensor during installation to reduce the influence of stray light.

Technical Parameter