COD range
The optical path length is selected using the expected concentration range and water matrix.
Browse by parameter
Online UV COD analyzers
Monitor changes in organic load continuously using UV absorbance for process control, environmental observation and industrial discharge projects.
CODCOD and organic matter measurement
01
Continuous UV correlation, not a laboratory digestion replacement
PUVCOD-900 and PUVCOD-600 measure 254 nm UV absorbance and correlate the optical signal to organic matter and COD. The relationship depends on the water matrix and site calibration. It is especially useful for trends and continuous control, while regulatory comparison should follow the project’s approved laboratory method and calibration plan.
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Confirm these conditions before selection
Correlation plan
Define the site samples and laboratory reference method used to build or verify the correlation.
Fouling risk
Review suspended solids, oils and cleaning requirements for the optical window.
Integration
Specify analog outputs, relays, Modbus RS485, cable length and panel requirements.
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Typical applications
Municipal wastewaterIndustrial dischargeSurface-water trendsProcess controlTreatment-plant influentEnvironmental monitoring
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Verified FUNEL configuration
PUVCOD-900
Wide-range UV254 COD analyzer
Direct-immersion UV absorbance analyzer with three documented optical-path configurations for organic-load and COD correlation.
Verified facts- 0–2000 mg/L COD by path
- ±5% KHP accuracy
- ≤0.4 MPa
PUVCOD-600
Compact UV254 COD and turbidity analyzer
Slim direct-immersion optical analyzer combining COD correlation with documented turbidity measurement ranges.
Verified facts- 0–1000 mg/L COD
- 10–1000 NTU
- Ø34 mm probe
05 · Applications
Four real UV254 COD projects
English case copy is searchable webpage text. Public visuals remove the original Chinese information panels and third-party branding.
View full cases↗
2020 · Zhao’an, Zhangzhou, Fujian, ChinaMunicipal wastewater plant multi-parameter monitoring upgrade
In December 2020, multiple online analyzers were installed to provide continuous organic-load, nutrient, solids and process measurements for plant operation.
Monitored parametersUV254 / COD correlationAmmonia nitrogenTotal phosphorusTotal nitrogen
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2023 · Jingmen, Hubei, ChinaUrban river ecological-restoration monitoring network
In July 2023, water-quality stations and pollution-source monitoring points were installed to observe river conditions continuously and support restoration work.
Monitored parametersUV254 / COD correlationPermanganate indexAmmonia nitrogenTurbidity
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2022 · Yangjiang, Guangdong, ChinaUnmanned surface-water monitoring boat project
In August 2022, an unmanned monitoring boat was commissioned for all-weather, automated multi-parameter surveys across the river and lake area.
Monitored parametersUV254 / organic loadTurbiditypHAmmonia nitrogen
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2020 · Tangshan, Hebei, ChinaRecirculating musical-fountain water-quality monitoring
In 2020, immersion sensors were installed to observe organic-load and supporting water-quality indicators continuously within the fountain basin.
Monitored parametersUV254 / COD correlationChlorophyllTransparencyDissolved oxygen
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UV COD selection questions
Does UV COD require reagents?+
The optical UV absorbance measurement is reagent-free. A site-specific correlation and routine verification plan may still be required.
Which ranges are available?+
PUVCOD-900 covers 0–2000 mg/L with a 2 mm path, 0–1000 mg/L with a 5 mm path, or 0–90 mg/L with a 50 mm path. PUVCOD-600 covers COD 0–1000 mg/L plus turbidity 10–1000 NTU with a 5 mm path, or COD 0–100 mg/L plus turbidity 10–300 NTU with a 25 mm path.
Contact FUNEL
Tell us what you need to measure.
We will respond with a recommended configuration, supporting documentation and quotation.