Parisian water clarity is checked

Drinking water clarity is being monitored in Paris by rugged turbidity meters, from Endress + Hauser. Water can leach from the soils and contaminate the clear water in the aqueducts. E + H’s sensors operate under high levels of humidity, measuring clear waters of less than 1NTU (turbidity) at a series of locations, some several […]

Drinking water clarity is being monitored in Paris by rugged turbidity meters, from Endress + Hauser.

Water can leach from the soils and contaminate the clear water in the aqueducts. E + H’s sensors operate under high levels of humidity, measuring clear waters of less than 1NTU (turbidity) at a series of locations, some several kilometres from the control centre.

On site calibration is not required, due to the long term stability of the factory pre-calibration. This is a useful feature, due to the inaccessibility of the measuring points. Also, in the past, turbidity systems have been susceptible to bubble interference. E + H’s CUD 3 bubble trap system, operating under pressure, removes this problem.

Another opportunity for turbidity monitoring arose when a reservoir had to be emptied, due to a build up of mud, which was blocking the outlet. Total drainage involved monitoring the quantity of mud flowing into a lake via three small rivers.

{{Endress + Hauser,Tel: 0161 286 5000; Fax: 998 1841.350 on enquiry card}}