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Specs at a glance
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Measuring range
0 to 10 mg/l free chlorine or 0 to 10 mg/l total chlorine
LOD: 0.018 mg/l -
Process temperature
5 to 40 °C (41 to 104 °F)
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Process pressure
0.3 bar (4.4 psi) to 5.2 bar (75.4 psi), up to the point of sample preparation.
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Measuring method
DPD (N,N-Diethyl-p-phenylenediamine) method in accordance with US EPA 40 CFR 141.74, US EPA 40 CFR 136.3, US EPA 334.0, ISO 7393-2 and 4500-CL-G
Field of application
The CA75 DPD analyzer module enables reliable monitoring of total or free chlorine in applications where precise, absolute measurement is required. It complies with regulations calling for the standardized, officially accepted DPD method.
Drinking water: to ensure reliable disinfection while preventing overdosing
Wastewater treatment plants: for monitoring effluent and enabling water reuse
Process water: for reliable chlorine detection and protection against damage
Food industry: to ensure hygienic filling processes and high product quality (e.g. in wash water) and to protect membranes in reverse osmosis systems
Swimming pools: for efficient disinfectant dosing
Note: The CA75 always requires a Liquiline CM44x transmitter.
Benefits
Meets regulatory requirements worldwide – thanks to the officially accepted DPD method.
Save space and costs: Expand your measuring point with additional Memosens sensors (e.g., for pH or turbidity measurement).
Seamless integration via fieldbus protocols such as Modbus RTU, PROFIBUS DP, EtherNet/IP, and more.
Easy commissioning: Connect the DPD analyzer module to a Liquiline CM44x transmitter like a plug-and-play sensor.
Low maintenance thanks to factory calibration: No regular calibration required and optimized OPEX through adjustable measuring intervals.
Reagent levels at a glance: Transparent door for quick visual check.
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Technical Information (TI)
TI DPD analyzer module CA75
Measurement of free chlorine or total chlorine using the DPD method
EN 06/07/2026Language:
English
Version:
06/07/2026
File size:
1.3 MB
File name:
TI01893CEN_0126-00.pdf
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Operating Instruction (BA)
BA DPD analyzer module CA75
Measurement of free chlorine or total chlorine using the DPD method
EN 25/06/2026Language:
English
Version:
25/06/2026
File size:
1.9 MB
File name:
BA02616CEN_0126-00.pdf
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Installation Instructions (EA)
EA DPD analyzer module CA75
Maintenance kit CAV750
EN 10/06/202621/04/2026Language:
English
Version:
10/06/2026
File size:
1.2 MB
File name:
EA01806CEN_0226-00.pdf
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Installation Instructions (EA)
EA DPD analyzer module CA75
Spare parts
EN 06/07/2026Language:
English
Version:
06/07/2026
File size:
2.4 MB
File name:
EA01807CEN_0126-00.pdf
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Special Documentation (SD)
SD CY75
Mixing the reagents
For analyzer module CA75EN 23/07/2026Language:
English
Version:
23/07/2026
File size:
255 KB
File name:
SD03599CEN_0126-00.pdf
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Special Documentation (SD)
SD DPD analyzer module CA75
Maintenance booklet
EN 11/05/2026Language:
English
Version:
11/05/2026
File size:
340.7 KB
File name:
SD03540CEN_0126-00.pdf
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Reagents/standard solutions/cleaner for analyzer
CY75-AKSCTA (Belgium (Dutch))
Reagent set for CA75 Free Chlorine
Language:
Dutch
Version:
21/05/2026
File size:
0 B
File name:
MSDS_CY75-AKSCTA_(BNL).pdf
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Reagents/standard solutions/cleaner for analyzer
CY75-AKSCTA (Lithuania)
Reagent set for CA75 Free Chlorine
Language:
Lithuanian
Version:
21/05/2026
File size:
0 B
File name:
MSDS_CY75-AKSCTA_(LT).pdf
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Reagents/standard solutions/cleaner for analyzer
CY75-AKSCTA (South Korea)
Reagent set for CA75 Free Chlorine
Language:
Korean
Version:
21/05/2026
File size:
0 B
File name:
MSDS_CY75-AKSCTA_(ROK).pdf
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Reagents/standard solutions/cleaner for analyzer
CY75-AKSCTA (United Kingdom)
Reagent set for CA75 Free Chlorine
Language:
English
Version:
21/05/2026
File size:
0 B
File name:
MSDS_CY75-AKSCTA_(GB).pdf
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