Trouble-free turbidity sensing?

Water instrumentation specialist Partech (UK) has announced its latest ISO7027-compliant turbidity sensor, specifically designed for drinking water and low range turbidity applications.

The TurbiTechw2 D-ISO turbidity sensor uses an LED display and is claimed to provide “unparalleled accuracy and ease of use for raw and final water monitoring.”


Unveiled at WWEM in Telford on 2-3 November, the TurbiTechw2 D-ISO device is fitted, as standard, with an automatic cleaning system so that user maintenance is kept to an absolute minimum. According to the firm, the annual cleaning process (including wiper blade replacement) takes no more than 5 minutes, meaning that the unit is effectively never offline.

Partech makes “superior accuracy” claims for the D-ISO device, which provides +/-2% of reading down to a detection limit of 0.01NTU/FNU/FTU. This means that “it is the perfect choice for final water monitoring on drinking water treatment works”, says the firm.

The D-ISO uses dry block calibration, a feature of Partech’s low range turbidity solutions for over 15 years. The dry block units eliminate the use of hazardous Formazin solution from the process, saving time when verifying the units. The dry block units can also be used with multiple instruments and are easily replaced

In addition, the D-ISO light source means that “the turbidity measurements you make today are directly comparable with the measurements you have made in the past”, says Partech.

This apparently contrasts with some competitor sensors where the light source is reflected off internal mirrors causing additional scattering, loss of intensity and uncertainty

The product release date is January 2017.