UV254

Applications

  • Drinking water
  • Process optimisation of wastewater treatment plants
  • Industrial and municipal wastewater
  • Mineral water monitoring
  • Surface water
UV254, BOD, COD, TOC

Description

The 3S-UV254 is a spectrophotometric analyzer for the determination of absorption at 254 nm. This parameter often called SAC (Spectral Absorption Coefficent) is a measurement related the organic load in aqueous streams and therefore is often used to determine water quality. In many cases the absorbance determined by the analyzer at 254 nm can be related to the organic content sum parameters such as TOC, COD and BOD by applying an appropriate conversion factor. The analyzer absorbance value can be also calibrated on a specific target substance. The analysis process lasts less than one minutes and in many cases does not require sample pretreatment due to the automatic turbidity compensation.

Method

This parameter has more than one analytical method. Choose one below.

The determination of dissolved organic substances is performed photometrically at 254 nm. To minimize the inteference of the sample turbidity or other matrix effects a second measurement at 590 nm is taken. The compensated absorbance is proportional to the concentration of dissolved organic substances that absorbs in the UV region.

Features

Wavelength 254 nm
Min. analysis time 1 minutes

The determination of dissolved organic substances is performed photometrically at 254 nm. To minimize the inteference of the sample turbidity or other matrix effects a second measurement at 590 nm is taken. The compensated absorbance is proportional to the concentration of dissolved organic substances that absorbs in the UV region. This measurement is often correlable with the COD value of the sample.

Technical Specifications

Model UV
Sampling Mode Batch, with freely settable frequency.
Sample Pressure-free vessel
Temperature: 5 to 50 °C (41 - 122 °F)
Flow Rate: 80 to 500 mL/min
Connection: 6 mm (¼-in.)
Drain Pressure-free drain
Connection: 12 mm (½-in.)
Input Streams 2
Cabinet Material Cold-rolled steel painted with epoxy powder
Dimensions (H x W x D) 606 x 380 x 209 mm (23.6 x 14.8 x 8.2 in)
Weight 20 kg (44 lbs)
Power Supply Input Voltage:100 - 240 VAC 50/60 Hz standard or 24 VDC (option)
Power consumption: max. 80 W
Output signals 2 x 4-20 mA analog outputs
Modbus RTU via RS485
Alarms 4 SPDT programmable voltage-free relays
Digital Input Remote start / stop
Temperature 5 - 45 °C (41 - 113 °F)
Relative Humidity 10 to 90 % (indoor use, outdoor installation only possible with protective cabinet or shelter not included)
Protection Grade IP54

Documentation

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