The COD-3250 Automatic Process Online analyzer uses the classic potassium dichromate digestion method to measure for chemical oxygen demand (COD) parameter. The mixed solution of sample and reagent is completely digested at a high temperature of 175°C, the color of the solution changes, and the degree of change is proportional to the COD value of the sample. The optical system measures the absorbance values before and after the change, and directly displays the COD
value of the sample.
value of the sample.
Features
– In line with relevant national standards, the classic potassium dichromate digestion spectrophotometry
– The negative pressure suction method is adopted, and the peristaltic pump tube has no contact with the reagent/water sample, which greatly prolongs the service life .
– Precise optical quantitative system to ensure accurate reagent and sample quantification
– The measurement interval can be flexibly set for easy operation
– Long-term stability and accuracy
– With automatic calibration, diagnosis, alarm function
– Touch screen operation
Applications
– Wastewater
– Process water
– Surface water
One-touch calibration function Realizes gentle measurement by combination with lead-free pH electrode
- Improved single-touch calibration for greater ease of use
- Calibration history display
- Extensive interfaces (2-channel transmission output, RS-485 compatible, 6-relay output)
- Control output (upper and lower limits ON/OFF and duty control in a shared time and a zone)
- New pH electrode lineup
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