Chromium 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 Cr chromium water quality online automatic monitoring instrument is a new generation of fully automatic total chromium online monitoring instrument developed based on Chinese national standards. 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 fields.

Product Details

The GR Cr chromium 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 pre treated water sample is pumped into a special reactor and first reacts with an acidic oxidizing reagent to oxidize all forms of chromium in the water sample to hexavalent chromium ions. Then, the pH of the solution is adjusted and a masking agent is added. Finally, a color developing agent is added to the mixed solution for color development reaction. Within the measurement range, the absorbance of the color developing solution is proportional to the concentration of total lead in the water sample, and the total chromium content in the water sample is detected and calculated at a specific wavelength.

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

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

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

By conducting two colorimetric measurements on the same sample within one analysis cycle, the sample concentration can be calculated, effectively compensating for the interference caused by sample chromaticity and turbidity;

Through independently designed sampling pipelines, sampling, quantification, liquid discharge, and each reagent have independent pipelines to avoid measurement errors caused by contamination.

project	Technical Requirements
methodological basis	HJ 798-2016 GB/T 7466-1987
measurement range	0.04-5mg/L， Segmentable, expandable, and customizable
zero drift	≤±3 %
Span Drift	≤±5 %
Minimum detection limit	≤ 0.001mg/L
Resolution	0.001mg/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