
Specs at a glance
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Measuring range
0 to 500 mg/l O2 COD chromate method
0 to 5000 mg/l O2 COD chromate method
0 to 5000 mg/l O2 COD chromate method + dilution module (1:4) -
Process temperature
4 to 40 °C (39 to 104 °F)
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Process pressure
Atmospheric
Field of application
Liquiline System CA80COD offers constant online measurement of the chemical oxygen demand (COD). It supports you in monitoring the cleaning capacity of wastewater treatment plants and enables load-based billing for industrial dischargers. Automatic calibration and cleaning save operating costs while advanced diagnostics with remote access help to provide process documentation to authorities. The COD analyzer's software-controlled safety functions ensure the highest level of occupational safety.
The Liquiline System COD analyzer monitors:
Inlet and outlet of wastewater treatment plants for documentation purposes and calculation of the cleaning capacity
Discharges of industrial wastewater treatment plants to determine discharge fees and to support the polluter-pays-principle
Process water
Benefits
Established COD dichromate method directly comparable to laboratory results.
Meeting industry needs: The analyzer is perfectly suited for environmental monitoring, industrial and municipal wastewater.
Fast and easy process integration: Direct installation of self-priming version or y-strainer for bypass applications.
Safety on the highest level: Software-controlled safety cover for the reactor and all heated parts.
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Combination of reliable sample delivery and high-precision dosing: Peristaltic pumps are able to cope with particles in the sample. Light barriers enable precise, reproducible dosing.
Easy upgrade of functionality to a complete measuring station - simply by adding modules and connecting Memosens sensors.
Videos
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The chemical oxygen demand (COD) of a liquid can be determined using chemical and thermal digestion and the colorimetric measuring principle. This video shows how this measuring principle works.
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
Predecessor
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Measuring principle
Colorimetric
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Characteristic
Analyzer for chemical oxygen demand (COD)
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Size
Housing (open version):
793 x 530 x 417 mm
31.22 x 20.87 x 16.42 in
Housing (closed version):
793 x 530 x 463 mm
31.22 x 20.87 x 18.23 in
Housing with base:
1723 x 530 x 463 mm
67.83 x 20.87 x 18.23 in -
Design
Open design, cabinet and stand housing
High-Performance plastic ASA-PC, additional stand coated steel -
Process temperature
4 to 40 °C (39 to 104 °F)
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Ambient temperature
5 to 40 °C (41 to 104 °F)
Outdoor version: - 20 to 40 °C (-4 to 104 °F) -
Process pressure
Atmospheric
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Sample flow rate
min. 30 ml/min
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Consistency of the sample
Aqueous homogeneous sample
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Specials
Easy upgrade to measuring station with up to four digital Memosens sensors
Automatic calibration and cleaning
User-configurable measuring, cleaning and calibration intervals
Self-priming analyzer with optical dosing unit l
Dilution module (optional)
Digital communication for remote access -
Application
Environmental monitoring, limit value monitoring of industrial and municipal waste water
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Power supply
100 to 120 VAC / 200 to 240 VAC ± 10%
50 ± 1 oder 60 ± 1,2 Hz -
Output / communication
2x 0/4 to 20 mA
Modbus RS485/TCP (optional)
Webserver (optional)
EtherNet/IP
PROFIBUS DP
Alarmrelay -
Input
1 measuring channel
1 to 4 digital sensor inputs for sensors with Memosens protocol (optional) -
Measuring range
0 to 500 mg/l O2 COD chromate method
0 to 5000 mg/l O2 COD chromate method
0 to 5000 mg/l O2 COD chromate method + dilution module (1:4) -
Consumables
Reagents and standard solutions CY80COD are necessary for the operation
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