T9004 CODmn Water Quality Online Automatic Monitor

Short Description:

CODMn refers to the mass concentration of oxygen corresponding to the oxidant consumed when strong oxidizing agents are used to oxidize organic matter and inorganic reducing substances in water samples under specific conditions. CODMn is an important indicator reflecting the degree of pollution caused by organic matter and inorganic reducing substances in water bodies.This analyzer can operate automatically and continuously without manual intervention based on on-site settings, making it widely suitable for applications such as surface water monitoring. Depending on the complexity of the on-site testing conditions, a corresponding pre-treatment system can be optionally configured to ensure reliable testing processes and accurate results, fully meeting the needs of various field scenarios.

Send email to us Download as PDF

Product Detail

Product Tags

Product Overview:

Product Principle:

The permanganate method for COD uses permanganate as an oxidizing agent. The sample is heated in

a water bath for 20 minutes, and the amount of potassium permanganate consumed in decomposing

organic matter in the wastewater serves as an indicator of the pollutant level in the water.

Technical Parameters:

No.	Specification Name	Technical Specification Parameter
1	Test Method	Potassium Permanganate Oxidation Spectrophotometry
2	Measuring Range	0~20mg/L (Segment measurement, expandable)
3	Lower Detection Limit	0.05
4	Resolution	0.001
5	Accuracy	±5% or 0.2mg/L, whichever is greater
6	Repeatability	5%
7	Zero Drift	±0.05mg/L
8	Span Drift	±2%
9	Measurement Cycle	Minimum testing cycle 20min;Digestion time adjustable from 5~120min based on actual water sample
10	Sampling Cycle	Time interval (adjustable),on-the-hour, or triggeredmeasurement mode, configurable
11	Calibration Cycle	Automatic calibration (1~99 days adjustable);Manual calibrationconfigurable based on actual water sample
12	Maintenance Cycle	Maintenance interval >1 month;each session approx. 30min
13	Human-Machine Operation	Touchscreen display and command input
14	Self-check & Protection	Self-diagnosis of instrument status;data retention afterabnormality or power failure;automatic clearing of residual reactants and resumption of operation after abnormal reset or power restoration
15	Data Storage	5-year data storage capacity
16	Input Interface	Digital input (Switch)
17	Output Interface	1x RS232 output, 1x RS485 output,2x 4~20mA analog outputs
18	Operating Environment	Indoor use; recommended temperature 5~28°C; humidity ≤90% (non-condensing)
19	Power Supply	AC220±10% V
20	Frequency	50±0.5 Hz
21	Power Consumption	≤150W (excluding sampling pump)
22	Dimensions	520mm (H) x 370mm (W) x 265mm (D)