CODcr (high chlorine, high salt) water quality online automatic monitoring instrument

NegotiableUpdate on 02/28

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The GR CODcr CODcr (high chlorine, high salt) water quality online automatic monitoring instrument uses the potassium dichromate method to measure the concentration of COD in water. The monitor adopts an integrated design, which can quickly complete sampling and testing work, and has the characteristics of automation, intelligence, stable performance, accuracy and reliability. This monitor is suitable for water quality monitoring in industrial wastewater, domestic sewage, surface water, groundwater, and drinking water, and can adapt well to high chloride and high salt water quality.

Product Details

The GR CODcr CODcr (high chlorine, high salt) water quality online automatic monitoring instrument consists of a sampling system, a metering system, a digestion system, a detection system, and a programmable control system. The monitoring device collects water samples through an automatic sampling system, and after passing through a high-precision photoelectric sensing measurement system, the water samples are transported to the digestion system. The digestion system automatically adds a set amount of potassium dichromate solution and high chloride and high salt shielding reagents, and uses silver sulfate as a catalyst in a strong acid medium. After sealed high-temperature digestion, the automatic controller system performs colorimetric analysis at a specific wavelength to calculate the concentration value of COD based on the color change before and after the reaction.

Can achieve the functions of standard sample verification and spiked recovery;

Capable of remote transmission control, bidirectional communication, and other functions;

Total amount of liquid for a single sample<>

Equipped with automatic protection and cleaning functions for power and water outages;

Equipped with measurement over limit alarm function, supporting remote setting of over limit values;

Adopting the mode of cold and hot air convection to achieve rapid cooling effect;

Adopting high-resolution color touch screen, easy to operate and rich in information;

Integrated digestion/colorimetric module patented technology, complete digestion, compact structure, high efficiency;

Using PTFE solenoid valve check technology to solve the loss of digestion tank and multi way valve caused by high temperature and high pressure;

High precision infrared visible photoelectric non-contact measurement system, with high measurement accuracy and high operational reliability;

Using a combination of physical and chemical methods to shield the influence of high chlorine and high salt on CODcr measurement;

By conducting two colorimetric measurements on the same sample, the sample concentration can be calculated to effectively compensate for the interference caused by sample chromaticity and turbidity;

Through independently designed pipelines, sampling, quantification, drainage, and various reagent pipelines are independent to avoid measurement errors caused by contamination.

project	technical indicators
Measuring principle	Potassium dichromate method
measurement range	0-5000mg/L (able to adapt to chloride ions and other salts in the range of 0-50000mg/L), can be segmented, expanded, and customized
zero drift	≤±5mg/L
Span Drift	≤±5%
Minimum detection limit	5mg/L
Resolution	0.01mg/L
accuracy	≤±5%
repetitiveness	≤3%
spike recovery rate	90%-110%
measurement period	The minimum measurement cycle is 30 minutes, and the digestion time can be set according to the actual water sample
Measurement Mode	(1min~9999min) Any adjustable time interval mode and hourly measurement mode
calibration cycle	(1 day to 99 days) Adjustable at any interval and any time
maintenance cycle	Usually once a month, about 30 minutes each time
signal output	RS-485 digital and 4-20mA analog output
human-computer interaction	HMI high-resolution color touch screen Chinese interface command input
external power supply	220VAC，50Hz，5A
environmental adaptability	Temperature (0-40) ℃; Humidity ≤ 90% (non condensing)
Overall dimensions	310mm254mm524mm