ON-LINE COD ANALYZER (UV 254 nm)

The measurement principle is based on the intense UV absorption of organic molecules at 254 nm according to the Lambert-Beer law:

[C] = k log (Iin / Iout)
[C]: concentration of the sample
k: extinction coefficient
Iin: sample input light intensity
Iout: light output sample intensity

Turbidity, organic substances, suspended solids or dirt in the measuring cell are automatically compensated by a differential measurement with a second detector with a different wavelength.

Conforms to AFNOR X PT 90-210 – DIN38404-C3 regulations.

Features

  • The response time is extremely rapid.
  • The operating costs are very low as the UV spectrophotometric measurement principle does not require the use of analytical reagents.
  • Can be used without filtration, thanks to the extremely simple hydraulic system and large diameter pipes.
  • The automatic cleaning system allows to keep the measuring cell clean for long periods without the need for intervention. The filling of the cleaning solution tank (5% sulfuric acid) is required only once a month.
  • Built-in datalogger.
  • Peristaltic pump incorporated for sampling.

Applications

  • Surface water monitoring
  • water purifiers
  • Water treatment plants

RANGE

0-200 mg/l
0-800 mg/l
0-2000 mg/l
0-5000 mg/l
0-20000 mg/l

Technical data:

Art.Nr. 201101

Principio di misuraSpettrofotometria UV
Tempo di analisi< 10 secondi
Frequenza di analisiImpostabile
Ripetibilità±0,01 mg/l KMnO4 |± 1,0 mg/l |± 3,0 mg/l | ± 5,0 mg/l | ± 10,0 mg/l
Accuratezza10%
Drift sullo zero5%
Drift full range10%
Interferenza in presenza di clorurino
Reagenti o consumabilino
Allarmi / Uscita analogica / seriale4 relais / 4-20 mA / RS232
ManutenzioneEstremamente limitati
FiltrazioneNon necessaria
AutopuliziaIntegrata
Temperatura ambiente>0-50°C
Temperatura campione>0-80°C
DataloggerIntegrato – scarico dati via RS232
Alimentazione110-130 Vac o 220-240 Vac/30 VA/ 50-60 Hz; 12-15 Vdc 3A
Costi operativiEstremamente limitati
Dimensioni600mm x 420mm x 230mm
Peso20 kg circa
Tempo di installazionePochi minuti

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