COD Online Analyzer
AG-C07 CODcr online analyzer using dichromate digestion and color-change measurement for Chemical Oxygen Demand trend monitoring.
COD Online Analyzer for environmental monitoring projects
AG-C07 CODcr online water quality analyzer for pollution-source wastewater, industrial process wastewater, municipal wastewater treatment plant effluent and surface water monitoring.
AG-C07 is selected for online CODcr monitoring at pollution-source outlets, industrial process wastewater points, industrial or municipal wastewater treatment plants and surface-water monitoring stations.
The working principle uses high-temperature digestion with potassium dichromate digestion solution, silver sulfate catalyst solution and concentrated sulfuric acid. After organic matter is oxidized, the instrument reads the color change and converts it into COD output. The available measuring range is 10-5000 mg/L and can be configured by project requirement.
Technical data for model selection
Review the main measuring range, output interface, operating conditions and configuration notes before quotation.
Huisheng confirms the final model, range and site configuration according to sample condition and monitoring requirement.
| Item | Specification / selection note |
|---|---|
| Model | AG-C07 CODcr online water quality analyzer |
| Method basis | Dichromate digestion / colorimetric measurement; HJ 828-2017 and HJ 377-2019 references |
| Measuring range | 10-5000 mg/L; range can be configured according to project requirement |
| Indication error | Below 100 mg/L: <= +/-8%; above 100 mg/L: <= +/-5%; range points: 80% +/-5%, 50% +/-8%, 20% +/-10% |
| Repeatability | <=5% |
| Measurement cycle | Minimum 30 min; digestion time 10-30 min adjustable according to sample condition |
| Sampling cycle | Interval measurement 20-9999 min adjustable; hourly mode available |
| Calibration / check cycle | 1-99 days adjustable |
| Output interface | RS-232, RS-485 and 4-20mA |
| Power supply | AC220 +/-10% V, 50 +/-1 Hz, 5A |
| Operating environment | Indoor adjustable temperature; suggested 5-40 degrees C, humidity 45%-85% |
| Cabinet size | 1500(H) x 500(W) x 450(D) mm |
Configured around the actual monitoring point
Sample pretreatment, reaction or digestion and instrument measurement are configured around the actual sample condition.
Wastewater, surface water, process water or water network points
Temperature, moisture, dust, solids, corrosive components or compound type may affect configuration.
Analyzer, detector, sampler, cabinet, pretreatment and data output can be combined as one product package.
Specifications are prepared according to the selected model and actual project requirement.
Details Huisheng reviews before confirming a model
Huisheng reviews the product model together with the measured medium, target range, sampling condition, installation position and required specifications. This keeps the product discussion tied to the real monitoring point.
Expected concentration or detection level helps determine the model and measurement method.
Temperature, moisture, suspended solids, dust, corrosion or target compound behavior may change the configuration.
Sample pretreatment, reaction or digestion and instrument measurement are configured around the actual sample condition.
Indoor cabinet, outdoor station, shelter or process-side installation depending on site
Communication output, alarm logic and model-specific specifications depend on the selected model.
Monitoring indicators covered by this product series
The final parameter package depends on the selected model, measuring range, sample condition and data output requirement. For many projects, one instrument is part of a complete monitoring point rather than a stand-alone purchase.
AG-C07
CODcr monitoring item used for organic pollution load, wastewater discharge and process trend review.
CODcr
CODcr monitoring item used for organic pollution load, wastewater discharge and process trend review.
HJ 377-2019 reference
This item is confirmed by the selected model, measuring range, sample condition and site requirement.
10-5000 mg/L configurable
CODcr monitoring item used for organic pollution load, wastewater discharge and process trend review.
Dichromate digestion
CODcr monitoring item used for organic pollution load, wastewater discharge and process trend review.
Automatic range switching
This item is confirmed by the selected model, measuring range, sample condition and site requirement.
How the product fits into a complete monitoring chain
Most projects connect the product with sample access, conditioning, measurement, data acquisition and reporting. The exact arrangement depends on the site and selected model.
Sample intake and filtering path
The sample access point determines whether filtration, heating, flow control or preservation is required.
Potassium dichromate digestion solution
This part is configured according to the selected model and actual site conditions.
Silver sulfate catalyst and sulfuric acid reaction system
This part is configured according to the selected model and actual site conditions.
High-temperature digestion and colorimetric measurement
This part is configured according to the selected model and actual site conditions.
Automatic range and data output section
Data acquisition, alarm output and communication must match the project platform or reporting requirement.
Where this equipment is usually discussed
Water monitoring applications are selected by monitoring point first: discharge outlet, treatment process, river station, water network or industrial process water. The instrument scope then follows the parameter group, sample condition and cabinet arrangement.
Used where discharge quality, treatment stability or final outlet trends need to be followed with clearer online data.
Used where discharge quality, treatment stability or final outlet trends need to be followed with clearer online data.
Used where discharge quality, treatment stability or final outlet trends need to be followed with clearer online data.
Used where discharge quality, treatment stability or final outlet trends need to be followed with clearer online data.
Suitable for distributed water points where physical, nutrient or chemical indicators need continuous observation.
