i::scan - the new miniature multi-parameter spectrophotometer probe will revolutionize online water quality monitoring: From very cost sensitive applications down to highly resolved 'Smart Water Grids', in small unmanned plants, or even in single building protection. The new i::scan combines the high performance of a multi wavelength spectrophotometer with even lower costs than of simple photometers!

The use of UV/Vis spectrometry in water quality monitoring and analysis is an established methodology. Direct measurement of parameters such as nitrate, hydrogen sulfide and ozone are widely used. Furthermore, full spectrometer probes provide the possibility to accurately measure color, sum organics (COD, TOC, DOC) as well as turbidity, all within a single instrument. As UV/Vis spectrometry is a purely optical technique, no chemicals or other consumables are needed, making this technology the simplest, most robust, and the lowest in maintenance known today. The main limitation of this technology has been the relatively high cost of the spectrometer hardware, mainly the light source, monochromator and detector. This has often limited the use to high end applications. Penetration of the technology into widely distributed sensor was difficult to achieve.

Less capable single wavelength photometers have been available at lower price for many years, but these lack the specificity to accurately measure single parameters and suffer from severe cross-sensitivities. As a result of this, they did not find much acceptance. With today's technology, it has now become possible to build miniature spectrometers so cost efficiently that they will revolutionize water quality monitoring, even in very cost sensitive applications like highly resolved 'Smart Water Grids' or even in single building protection.

The new i::scan uses an array of narrow band light emitting diodes as light source. This light sources as they are robust, reliable, stable, small, have lower power consumption, and lower cost than traditional technologies. The selection of the light sources and filters, i.e. wavelength ranges, as well as the applied mathematics, has been optimized for measurement of popular water quality parameters in all types of applications. Parameters that can be measured accurately include Turbidity, TSS, COD, TOC, DOC, Color and UV254 as well as so-called 'spectral alarms'. The use of multiple wavelengths is the basis for automatic compensation of cross-sensitivities. Furthermore, advanced optics allowed the combination of a 180° absorption measurement with a 90° light scatter measurement in a single instrument. The compact design of the probe allows the insertion of the probe directly into the water pipes of a distribution network.

i::scan - the new solution for small water utilities - is not much more expensive than a good turbidity meter, and includes organics which are recommended for contamination alarm. Small utilities that were able to afford a turbidity sensor, can now afford an i::scan for organics (TOC) AND turbidity.

Measures turbidity according to EPA 180.1 and ISO 7027

• Measurement according to EPA 180.1 and ISO 7027
• S::can plug & measure
• New light emitting technology
• Combined 180° and 90° scattering
• No consumables
• No moving parts
• Low power consumption (less than 1 W typical)
• Dual-beam compensated optics
• Optional automatic cleaning (compressed air in situ or autobrush in flow cell)
• Multiple versions for multiple applications
• Long term stable, 100 % corrosion free
• Plug connection or fixed cable
• 5000 hours maintenance free operation
• Mounting and measurement directly in the media (in situ) or in a flow cell (monitoring station)
• Can be mounted directly in a mains pipe / pressure pipe
• Operation via s::can terminals & s::can software

PDF

i::scan - Color and TOC 419,1 KB

i::scan - UV254 360,62 KB

i::scan - Turbidity 360,3 KB

i::scan - Color 360,67 KB

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