Ranging from 0.01 NTU to 1000 NTU with a resolution in the 0-10 NTU range of 0.001, the TurbSense® online turbidity meter provides:
Each sensor has a light source, a side detector for the measurement of scattered light from the sample and a reference detector for monitoring the light output. The light source is a long-life IR LED emitter suitable for 15 years continuous use. By varying the light output it is possible to correct the signal for window fouling, zero, zero drift and electronics drift. This patented technique is how the TurbSense® breaks all norms for a probe based sensor in terms of performance.
The probes are made of stainless steel and sapphire so can work almost anywhere. An Autoclean flushing system can be included to keep the optical surfaces clean, thereby reducing maintenance to a potential ‘maintenance free’.
The TurbSense® online turbidity meter is suitable for dip monitoring and mounting in a debubbling flow cell whch can be pressured or not depending on the likelihood of there being nucleating bubbles. Entrained bubbles can be removed using the debubbler.
Anywhere where the measurement range is 0.01-1000 NTU (approx 0-2000 mg/l, application dependent) is a suitable application for the TurbSense® online turbidity meter.
Traditional online turbidity monitoring applications where the TurbSense® is particularly suited:
Turbidity uses nephelometric turbidity units (NTU) and is a measurement of the ‘cloudiness’ of a water sample. Suspended solids describes the mass of solid particles suspended in a given volume of water and is most commonly expressed in mg/l. The two measurements are related, but the conversion between them will depend upon the properties of the suspended material.
Compared to glass or quartz, sapphire is much tougher and resistant to scratches. Additionally, because it is much stronger the window can be thinner, which improves the quality of optical transmission.
Yes, but there are factors end users should consider because the reliable operation of the sensor depends upon a powerful light source and sensitive optics. Reflections from walls and bends in pipes can cause problems in accuracy, so the turbidity of the process stream, the diameter of the pipe and the material used will need to be taken into account.
Larger diameter pipes and those made of less reflective materials are better; additionally, the higher the turbidity the more likely pipe insertion will be effective. At >200NTU, putting a TurbSense® into a pipe shouldn’t be a problem.
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