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Liquiline System

Monitoring phosphorus andnitrogen in surface waters
High-precision measurementwith Liquiline System analyzers
The colorimetric analyzers
are perfectly suited forenvironmental monitoring,industrial and municipal
wastewater.
• Reliable, regulation-compliant
online measurement by using
standardized methods according
to EN ISO 6878 and HJ636• Safety on the highest level withsafety covers for the reactors, allheated parts and the UV lamp
• Wide measuring range thanks tointegrated dilution module• Fast process integration: Selfpriming version for direct
installation or y-strainer for
bypass applications• Advanced diagnostics andprocess documentation withremote access to the analyzer• Easy upgrade to a complete
measuring station connecting
Memosens sensors

2Innovation

Optimize environmental monitoring

Monitor the outlet and comply with limit values
The primary focus in wastewater treatment is to protect
downstream waters. Phosphorus is the decisive factor forexcessive algae and plant growth and nitrogen also adds tothe eutrophication of water bodies. That’s why quality
standards stipulate strict limits for the amount of phosphorus or nitrogen released from wastewater treatment plants
into rivers and lakes. Liquiline System CA80TP total
phosphorus and Liquiline System CA80TN total nitrogen
analyzers help managers of wastewater treatment plants toachieve compliant limit values.
Control your precipitation process
The measurement of total phosphorus is suitable toenhance precipitation control. Instead of using a fixed set
value for precipitant dosing, the set value is determined by
the measured TP concentration. This enables you to tune
your precipitation processes to current events such as
rainfall, increased solids inflow, etc.
Check the quality of surface water
Nitrogen is a lead parameter to determine surface water
quality. Both, organic (e.g. proteins, urea) and inorganic(e.g. nitrate, nitrite, ammonium) substances contribute to
the total nitrogen load. Increased nitrogen contents
indicate influences from wastewater, landfill leachate oragriculture. Total nitrogen cannot be removed chemically.
To achieve required nitrogen levels the biological processesof wastewater treatment must be managed accordingly.
Accurate online measurement to reach your goals
Online measurement with Liquiline System CA80TP andCA80TN ensures reliable, real-time monitoring of watertreatment. It can alert you to issues and allows for a quick
reaction in case of disturbances.

• Standard molybdenum blue method following ISO 6878
for total phosphorus ensures consistent comparability tolab measurements.
• Standardized alkaline persulfate digestion according toEN ISO 11905-1 and UV-photometric measurement offer
direct comparability to most total nitrogen cuvette tests.
• The analyzers must capture particles of a defined size inorder to gain accurate and representative results. The
Y-strainer and peristaltic pumps are able to cope withthose particles.
• The optional dilution module extends the measuring
range for precise measurements in water with higher
phosphorus or nitrogen loads.
• Detailed logbooks enable consistent documentation of
the TP and TN values.
Reactors pushed to the next level• The unique titanium reactor of the TN analyzer offers
superior long-term performance.
• Hard-coated optical filters live significantly longer thanthe established soft-coated filters.
• Precisely adjusted reactor temperatures guaranteecomplete digestion of the sample.
• The software-controlled safety cover of the TP analyzer
prevents opening of the digestion reactor if it is too hot
or under pressure. The reactor only heats up when thesafety cover is in the correct position and the cover can
only be removed for maintenance when the reactor is ina safe state.
• The optical dosing unit of the TP analyzer is equippedwith an additional safety light barrier which takes over incase of a malfunction, ensuring the best level ofreliability.

Liquiline System

Decrease operating costs, simplify maintenanceHighest precision in low measuring ranges• The molybendum blue method of Liquiline System
CA80TP allow for precise measurement down to a limitof detection (LOD) of 0.015 mg/l.
• The high-quality optical components of Liquiline
System CA80TN like sapphire glass windows enable alimit of detection (LOD) of 0.06 mg/l.
Uniform operation of analyzers and transmitters• Operation of Liquiline System is familiar because it isidentical to the concept of other online analysis
parameters, such as pH or chlorine. Operating errors
are virtually eliminated.
• Extend your analyzer to a measuring station byconnecting up to four Memosens sensors and thus
reduce the investment costs for your plant.
• Integrate the analyzers seamlessly into your processcontrol systems via Modbus, PROFIBUS DP, PROFINET,
EtherNet/IP and web server communication.
Liquiline System makes life easier for operators
Automatic cleaning and calibration functions ensurethat the analyzer works accurately and reliably over a long
period without manual intervention.
Simple maintenance The modular design simplifies fast
replacement of individual components and reduces stock
costs:• Bayonet locks of the peristaltic pumps enable hoseexchange within minutes.
• The dilution module consists of the same components as
the standard pumps for sampling.

3Easy process integration
Fast setup of sampling
Liquiline System CA80TP and CA80TN offer twoeasy ways of integrating the sampling to draw
homogeneous and representative samples.
The self-priming version extracts samples
directly from an external collecting vessel.
The optional Y-strainer enables you to takesamples directly from bypass pipes.
• It is easily integrated by its standard adhesive
fitting (40 mm).
• It delivers representative samples thanks tothe sample hose floating in the middle of thesample stream.
• Blocking is avoided because the fluidic
movement removes particles inside theY-strainer.
Y-strainer

Easy connection of Memosens sensors
To be prepared for an especially easy upgrade toa measuring station, use the Liquiline Systemanalyzers with M12 connectors. With theseanalyzer versions, Memosens sensors can
simply be screwed into the M12 connections
without any additional wiring or tools.

Easy connection with M12 connector

IN01085C/07/en/02.22

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