High-Precision Low Range Water Hardness Measurement

The Endress+Hauser Liquiline System CA82HA is a colorimetric online analyzer specifically developed for measuring very low water hardness concentrations.

In applications such as ultrapure water production and boiler feed water systems, even small amounts of hardness can lead to deposits, reduced efficiency and potential damage to expensive equipment.

The CA82HA provides continuous hardness monitoring with a detection limit as low as 0.02 mg/l CaCO₃, allowing operators to identify changes quickly and maintain stable water quality.

Colorimetric Measurement Principle

The CA82HA uses a standardized colorimetric measurement method for total hardness analysis.

Compared with manual laboratory testing, online measurement provides:

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  Continuous process monitoring
  
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  Faster response to hardness changes
  
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  Improved process transparency
  
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  Reduced manual sampling requirements
  
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  Reliable quality control
  

This makes it suitable for applications where extremely low hardness levels must be controlled.

Designed for Pure and Ultrapure Water Applications

The CA82HA is optimized for applications requiring strict hardness control.

Typical applications include:

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  Boiler feed water monitoring
  
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  Condensate monitoring
  
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  Water-steam circuit monitoring
  
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  Ultrapure water analysis
  
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  Reverse osmosis systems
  
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  Desalination plants
  

By continuously monitoring hardness levels, the analyzer helps protect downstream equipment and improve system reliability.

Protects Critical Industrial Equipment

Low hardness measurement is essential in industries where deposits can affect equipment performance.

The CA82HA helps operators:

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  Reduce scaling on heat exchangers
  
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  Protect turbines and high-value equipment
  
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  Improve water treatment efficiency
  
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  Detect process changes at an early stage
  

This supports better operational reliability and reduced maintenance costs.

Automatic Calibration and Cleaning

The CA82HA is designed to minimize maintenance requirements through automated functions.

Key advantages include:

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  Automatic calibration
  
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  Automatic cleaning
  
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  User-configurable measuring intervals
  
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  Reduced maintenance workload
  
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  Stable long-term measurement performance
  

These functions help maintain analyzer accuracy during continuous operation.

Flexible Liquiline System Integration

As part of the Liquiline System platform, the CA82HA can be expanded into a complete water analysis solution.

The analyzer supports:

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  Connection with Memosens digital sensors
  
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  Multi-parameter measurement stations
  
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  Digital communication systems
  
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  Remote diagnostics
  

Up to multiple sample channels can be configured, allowing one analyzer to monitor different measuring points in a plant.

Digital Communication and Remote Access

The CA82HA supports integration into modern automation systems.

Available communication options include:

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  Web server
  
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  Modbus
  
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  Ethernet/IP
  
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  PROFIBUS DP
  

This enables easier monitoring, diagnostics and maintenance management.

Key Features

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  Online low range water hardness analyzer
  
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  Colorimetric total hardness measurement
  
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  Detection limit down to 0.02 mg/l CaCO₃
  
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  Designed for ultrapure and pure water applications
  
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  Suitable for boiler feed water and condensate monitoring
  
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  Automatic calibration and cleaning
  
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  Up to 6 sample channels
  
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  Expandable with Memosens digital sensors
  
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  Liquiline System platform integration
  
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  Digital communication and remote diagnostics
  

Typical Applications

Boiler Feed Water Monitoring

The CA82HA helps maintain low hardness levels in boiler feed water systems.

Applications include:

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  Hardness breakthrough detection
  
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  Water quality monitoring
  
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  Equipment protection
  

Water-Steam Circuit Monitoring

Continuous hardness measurement helps prevent deposits and maintain efficient operation of steam systems.

Benefits:

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  Improved process reliability
  
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  Reduced maintenance requirements
  
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  Better equipment protection
  

Ultrapure Water Production

The analyzer supports quality monitoring in ultrapure water systems.

Typical uses:

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  Final water quality verification
  
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  Process control
  
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  Contamination detection
  

Reverse Osmosis and Desalination

The CA82HA helps monitor hardness levels in membrane-based water treatment systems.

Applications include:

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  Treatment efficiency monitoring
  
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  Pretreatment control
  
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  Water quality assurance
  

FAQ

What is Endress+Hauser CA82HA?

The CA82HA is an online colorimetric analyzer designed for measuring low-range water hardness concentrations in pure and ultrapure water applications.

What does CA82HA measure?

CA82HA measures total water hardness concentration, typically expressed as CaCO₃.

What is the detection limit of CA82HA?

The CA82HA can measure hardness levels down to 0.02 mg/l CaCO₃.

What is the difference between CA82HA and CA80HA?

CA82HA is designed for low-range hardness measurement with a lower detection limit, mainly for ultrapure water and industrial water circuits. CA80HA is designed for wider-range water hardness monitoring applications.

Where is CA82HA commonly used?

It is mainly used in boiler feed water, condensate systems, ultrapure water production, reverse osmosis and desalination applications.