Water Matrix Technologies

Online BOD and COD Analysers

STAC – COMPACT ALARM SYSTEM

THE OVERALL CONTEXT

SECOMAM and Ales Mines School designed a Compact Alarm

System called STAC dedicated for this survey.
Using an innovative and patented technology, the STAC: :

  • Estimates the Organic Matter (COD, BOD, TOC), the TSS level and measures the nitrate concentration.
  • Checks and detects undesirable substances (Pesticides, aromatic hydrocarbons..)

PRINCIPLE

Most of macro pollutants and mainly Organic Matters, TSS and Nitrates absorb in a specific way in the UV light spectrum.

By measuring the sample absorbance in the specific area of the UV spectrum, the STAC records the spectral profile of the sample, a true numerical picture of the water quality.

• Detector

  • UV diode array spectrophotometer (204-323 nm) without any moving parts
  • Easy to maintain, 50 mm quartz cuvette
  • Pulsed deuterium source for a far UV high energy

• Sampling

  • Automatic and sequential sampling circuit rinsing and cuvette cleaning Programmable automatic sampling from 5 to 30 minutes
  • Pinching valves Ø 8 mm for TSS reading without filtration

•Date transfer

  • Current loops
  • RS 232
  • UV-Pro software for data storage and
  • UV spectrum management

Casing

  • 1- Control box: 300 x 300 x 170 mm, Weight: 3 Kg, Protection IP 65
  • 2- Fluidic box: 300 x 300 x 170 mm, Weight: 3 Kg, Protection IP 65
  • 3- Polychromator box: 280 x 190 x 180 mm, Weight: 3 Kg, Protection IP 66/65

MEASURING RANGE

Correlation with Organic Matter:

  • COD : 0.2 to 8750 mg/L
  • BOD : 0.05 to 8750 mg/L
  • TOC : 0.1 to 7500 mg/L
  • TSS : 0.5 to 2500 mg/L

Nitrates measurement:

  • NO3 : 0.1 to 1000 mg/L

Undesirable substances detection:

Components: 2,4 D, DIURON, CHLORPYRIPHOS, ATRAZINE 200, AMINOTRIAZOLE, PARAQUAT, DIAZINON, AZULENE, HEXAZINONE, DIQUAT, BENTAZONE, AROMATIC HYDROCARBONS

ORDERING INFORMATION

  • 70MP0454: STAC Analyzer
  • 70MP0539: 2mm optical pathlength flowcell
  • 70MP0538: 5mm optical pathlength flowcell
  • 70MP0537: 50mm optical pathlength flowcell

* Instrument delivered without cell, to be ordered separately (ref. 70MP0539 or ref. 70MP0538 or ref. 70MP0537)