measurements specific to water treatment

These measurements are undertaken either with a sensor or by using the results from an "in line" analyser. Depending on the application field (including gases) and on the concentrations to be measured, the measurement technologies and principles used can vary (amperometry, photometry, fluorescence, spectrophotometry, titrimetry…).

physical sensors

• A. Turbidity meter
• B. Particle measurement
• C. Suspended solids concentration measurement (optical measurement)
• D. Top level of sludge measurement (using ultrasonics, optics or radar)
• E. Conductivity meter – Resistivity meter
• F. pH meter
• G. Redox
• H. Dissolved oxygen measurement
• I. Available and high concentration chlorine measurement
• J. Ozone measurement

specific water quality analysers

In general, the sample to be measured has to be conveyed to the analyser for these measurements (see treatability tests).

• A. Nitrate measurement
• B. Ammonia measurement
• C. Organic matter measurement (OM UV method)
• D. Transmittance measurement
• E. Orthophosphate measurement
• F. COD measurement
• G. Hydrocarbon trace measurement
• H. Soluble iron and manganese measurement
• I. Sulphide measurement
• J. Hardness measurement
• K. Biological toxicology measurement
• L. Fouling index

gas analysers

• A. CO
• B. O₂
• C. CH₄
• D. H₂S
• E. NH₃
• F. RSH mercaptan
• G. Flue gas quality parameters (SO₂, HCℓ, CO, O₂, No_x, dust…)