UVAS Analizador en línea de absorbancia UV sc

Typical Applications

• This online COD analyzer can be used in small and medium-sized wastewater treatment plants that need to monitor organic concentration trends, for continuous monitoring of dissolved organic pollutants in water.

• Water quality monitoring at the inlet and outlet of wastewater treatment plants, providing users with continuous and stable measurement data at low operating costs.

• In wastewater treatment processes, it is necessary to control the balance between organic load, aeration rate, and nutrients. Using UVAS eco sc

• The UV absorption online analyzer can provide continuous organic matter trend data, helping operators optimize the process.

Instrument Features

• This online COD analyzer has low operating costs, with only the sealing ring and wiper blade as consumable parts.

• Economical product of UVAS, at a lower price.

• Stainless steel material, sturdy and durable.

• Integrated automatic wiper cleaning function, ensuring low maintenance requirements even under very demanding application conditions, with no additional installation and maintenance required (e.g., compressor).

• Plug and play.

Principle of Operation

When organic substances containing conjugated double bonds or polycyclic aromatic hydrocarbons are dissolved in water, they absorb ultraviolet light. Therefore, by measuring the degree of absorption of 254 nm UV light by these organic substances, we can assess the degree of organic pollution in the water body. The “specific absorption coefficient”, namely SAC254, is the physical quantity used to measure the total amount of organic pollutants in water. This online COD analyzer consists of a controller and a measuring probe. When the measuring probe is in operation, it needs to be immersed in water, or water is pumped up to flow through the gap. When the light emitted by the light source in the probe passes through the gap, part of the light is absorbed by the sample flowing through the gap, while the rest of the light passes through the sample and reaches the beam splitter on the other side of the probe, where it is split into two beams: 50% of the light is detected by the sample detector, and the other 50% is detected by the reference detector. This online COD analyzer compares the signals from the two detectors to provide the “specific absorption coefficient”, namely SAC254.

Technical Specifications

• Measuring technique:                                  UV absorption measurement (dual-beam technology), no chemical reagents required

• Resolution:                                      0.5 m-1 or mg/L or ppm

• Accuracy:                                      ±5% of measured value, ±10 m-1, whichever is greater

• Measuring optical path:                                  1mm

• Measuring range:                                       5-1500 m-1

• Compensation wavelength:                                  550nm

• Response time:                                  ≥5 minutes, or longer

• Cable length:                                  10m, extendable to 100m

• Analog output:                                  Two 0/4~20mA outputs (via sc200)

• Probe pressure limit                              Max. 0.5bar

• Ambient sample temperature                              +2~+40℃

• Water sample pH:                                   4.5~9

• Dimensions:                                        Approx. 75×323mm

• Weight:                                        Approx. 3.3kg

• Service interval:                                 6 months

• User maintenance:                                Typically 1 hour/month

Ordering Guide

• Standard configuration includes: UVAS eco sc sensor, sc200 or sc1000 controller, sensor mounting accessories

• LXV443.80.10002                        UVAS eco sc probe, 1mm optical path

• LZX414.00.10000                        Sensor mounting accessories

• sc200 Controller (must be ordered separately)

• LXV404.99.00552                       Standard sc200 controller, digital probe, dual channel, 220V

• LXV404.99.01552                       sc200 controller with RS232/RS485 MODBUS network card, digital probe, dual channel, 220V

• sc1000 Controller (must be ordered separately)

• LXV402.99.00002                       sc1000 display module

• LXV400.99.1R572                       sc1000 probe module, 4 sensors, 4mA input, 4mA output, 4 relays, 110-230V

• LXV400.99.1B572                       sc1000 probe module, 4 sensors, 4mA input, 4mA output, 4 relays, RS485(MODBUS), 110-230V

• LXV400.99.1F572                       sc1000 probe module, 4 sensors, 4mA input, 4mA output, 4 relays, PROFIBUS DP, 110-230V

• LXV400.99.1R582                       sc1000 probe module, 6 sensors, 4mA input, 4mA output, 4 relays, 110-230V

Source: Public information from HACH Water Quality website