Product Overview
The instrument uses potassium dichromate oxidation spectrophotometry for measurement. Potassium dichromate solution is orange red in color, and during the oxidation process, the color changes, generating green trivalent chromium ions. According to Lambert Beer's law, the absorbance of a solution is directly proportional to the concentration of the absorbing substance. By measuring the absorbance of the solution at a specific wavelength after the reaction, the concentration changes of potassium dichromate or trivalent chromium ions can be determined, and the organic matter oxidation content in the water sample can be calculated. The instrument is suitable for online monitoring of various enterprise wastewater discharge outlets, surface water, rivers and lakes, etc.
Product Features
▶ Optional ordinary measurement mode and high chlorine mode, suitable for various working conditions
▶ Equipped with automatic fault handling to reduce operation and maintenance workload
▶ Independent research and development, supporting personalized customization
▶ High precision injection pump, precise and stable quantification
▶ Integrated digestion tank, durable, reinforced and sealed
▶ High quality pipelines, acid, alkali, and corrosion resistant
▶ Experienced operation and maintenance team, worry free after-sales service
▶ The measurement principle is the same as the laboratory method, which is convenient for comparison and accurate for testing
Product parameters
measurement range | 0~2000mg/L(Can be customized according to customer needs) |
indication error | 20% ±10% |
50% ±8% | |
80% ±5% | |
Quantitative lower limit | ≤15mg/L |
repetitiveness | ≤5% |
24-hour low concentration drift | ±5mg/ L |
24-hour high concentration drift | ≤5% |
measurement method | Manual measurement; Interval measurement; Automatic measurement (user selected time point measurement) |
Calibration function | Manual calibration; Automatic calibration; Zero point calibration; Calibration of standard solution |
Verification function | Manual verification; Automatic verification |
signal output | 2-channel RS485; 2-channel 4-20mA; 1-channel RS232 |
communication protocol | HJ212； Modbus |
Environmental Requirements | 5~40℃ |
working power supply | AC(220±10%)V，(50±1%)Hz |
data storage | At least one year of data, data will not be lost during power outages, and data can be exported from a USB flash drive |
power | ＜170W |
power failure protection | Automatically discharge residual liquid after power on and restore to working condition |
Instrument size | Length 46cm x Width 36cm x Height 150cm (subject to actual product) |
weight | About 60kg |
other | Personalized customization (various switch outputs, valve control, water pump control, etc.) |
Tel：+86 15305551168
Number：+86 0555-2780978 / 0555-2780906
Address：No. 168, Ginkgo Avenue, Cihu National High-tech Zone, Huashan District, Ma'anshan City
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