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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Kerry DCF produces spreads and butter products for the retail market. The company wanted to automate its test for chemical oxygen demand in its treated effluent to save time and optimise the process.
Bonumose decided to enhance, automate and digitalize its tagatose sweetener manufacturing process with Endress+Hauser instrumentation to reach its company growth goals
Monitoring disinfection in drinking water treatment Measuring chlorine levels in secondary water supply systems Monitoring process and utility water in the food and beverage industry Chlorine monitoring in industrial water circuits Analyzing chlorine levels in water reuse applications
Characteristic
Colorimetric measurement of free chlorine or total chlorine
Measuring range
0 to 10 mg/l free chlorine or 0 to 10 mg/l total chlorine LOD: 0.018 mg/l
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
Design
Compact DPD analyzer module (to be connected to Liquiline CM44x)
Dimension
449 x 340 x 199 mm
Process temperature
5 to 40 °C (41 to 104 °F)
Process pressure
0.3 bar (4.4 psi) to 5.2 bar (75.4 psi), up to the point of sample preparation.
Sample flow rate
60 to 200 ml/min
Connection
Fixed cable with Memosens-Technology
Supply voltage
via Liquiline CM44x transmitter
Consumables
Reagents and standard solutions CY75 Cleaner CY800 Maintenance kit CAV750
