Online COD analyzer

TACH-GW-009type onlineCODanalyzerIt is a modern analytical instrument that integrates computer automation control technology and multiple * technologies. Water samples are oxidized and digested in a mixture of potassium dichromate, silver sulfate, and concentrated sulfuric acid under high temperature and high pressure sealed conditions. In this reaction, hexavalent chromium is reduced to trivalent chromium, causing the color of the mixture to change. The instrument calculates the color of the sample through colorimetric methodsCODValue. The humanized design and simple operation of this instrument have been widely used in industrial production processes for water use, wastewater discharge, urban and rural domestic sewage, and other water bodiesCODtesting.

Performance Characteristics

TACH-GW-009type onlineCODanalyzerAdopting modular design, each component operates independently, improving the efficiency of the instrument, and adopting a sophisticated optical acquisition system;

The application of components from foreign manufacturers in independently developed technologies ensures the repeatability and stability of instrument measurements, reducing instrument failure rates;

Integrated anti control, positioning, and data acquisition system, users can understand the current status of the instrument at any time through various methods;

The instrument can automatically identify water samples to ensure normal operation of the instrument;

Adopting independent research and development in0.5mLRepeatability under certain conditions≤0.15%Design and corrosion-resistant flow path design;

Adopting an eight ring valve system and independently developed strong acid and strong corrosive liquid measurement technology, it has a long service life, stable light intensity, and can be automatically calibratedLEDLight source;

Using intelligent optocoupler judgment combined with liquid level detection technology to accurately determine the amount of reagent used;

Intelligent controllable gas-liquid gentle backwash pretreatment system, precisionPIDThe temperature control dual system redundancy technology, two-point calibration or intelligent single point calibration make instrument operation and maintenance simpler, with independent channels and automatic standard liquid verification function.

technical indicators

Measurement principle: potassium dichromate sealed high temperature and high pressure digestion, colorimetric determination

Measuring range 5~10000mg/L

Indication error≤40mg/L ±2mg/L

＞40mg/L ±5%F.S

Measurement drift: zero point（24h）：±1mg/L

Range（24h）：±5%

heavy again Sex:≤3%

Detection limit:4.4mg/L

Measurement mode: continuous, hourly, manual, trigger start

Maintenance work: replace reagents and maintain instruments（1month1Next time)

Self setting: calibration interval, resolution time

Communication method:2road4～20mAoutputRS485，RS232

Overall dimensions:505mm x 395mm x 671mm

Power supply AC 220V±10％ 50HZ

wait Machine:15W

transport that 's ok:44W