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PAH sensor Memosens CFS51

Memosens sensor for measuring the concentration of polycyclic aromatic hydrocarbons in discharge water of marine exhaust gas cleaning systems (EGCS) and for reliable online monitoring of oil‑in‑water to ensure environmentally compliant discharge

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PAH sensor Memosens CFS51

Memosens sensor for measuring the concentration of polycyclic aromatic hydrocarbons in discharge water of marine exhaust gas cleaning systems (EGCS) and for reliable online monitoring of oil‑in‑water to ensure environmentally compliant discharge

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Benefits

  • The uniquely long factory maintenance interval saves you a lot of costs and organizational effort
  • The optionally available flow assembly holds the sensor at the ideal installation angle to minimize disturbing influences caused by air bubbles. In addition, it can be tilted for quick mounting and dismounting of the sensor.
  • DNV approved integrated turbidity correction in the range of 0-50 FNU
  • High material compliance of sensor and flow assembly according to IACS E10 (flame retardancy)
  • The solid-state reference makes calibration very easy for the end user - and you can completely eliminate the need for toxic phenantrene, which increases safety for your employees and the environment
  • The suitability of the solid-state reference for calibration and readjustment of the PAH sensor on board was confirmed by DNV
  • Early warning to limit contamination and initiate appropriate measures, as well as real‑time monitoring to ensure reliable documentation and compliance with legal regulations
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PAH sensor Memosens CFS51

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Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

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Product information

Memosens CFS51 PAH sensor
Digital PAH sensor
Specifications
Measuring / Application task Concentration
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Description

The rugged Memosens CFS51 fluorescence sensor enables continuous, real-time monitoring of PAHs and oil contamination in marine, industrial, and environmental waters. Compliant with MEPC.259(68) and MEPC.340(77), it is designed for PAH monitoring in EGCS wash water, where a solid-state reference enables onboard calibration for reliable measurement. The sensor also supports oil-in-water monitoring in industrial water systems, helping ensure stable process operation and compliant discharge.

Field of application

The Memosens CFS51 fluorescence sensor is used for continuous monitoring of PAHs and oil contamination in the following applications:

  • Monitoring of PAHs in marine EGCS wash water
  • Effluent pollution monitoring
  • Detection of oil contamination in cooling water systems
  • Early identification of oil leakage in steam condensate from heat exchangers
  • Oil monitoring at seawater intakes of desalination plants
  • Continuous monitoring of surface water and environmental waters
Benefits
  • The uniquely long factory maintenance interval saves you a lot of costs and organizational effort
  • The optionally available flow assembly holds the sensor at the ideal installation angle to minimize disturbing influences caused by air bubbles. In addition, it can be tilted for quick mounting and dismounting of the sensor.
  • DNV approved integrated turbidity correction in the range of 0-50 FNU
  • High material compliance of sensor and flow assembly according to IACS E10 (flame retardancy)
  • The solid-state reference makes calibration very easy for the end user - and you can completely eliminate the need for toxic phenantrene, which increases safety for your employees and the environment
  • The suitability of the solid-state reference for calibration and readjustment of the PAH sensor on board was confirmed by DNV
  • Early warning to limit contamination and initiate appropriate measures, as well as real‑time monitoring to ensure reliable documentation and compliance with legal regulations
Downloads
Most downloaded
Technical Information (TI)
TI Memosens CFS51 Sensor for fluorescence measurement
English version - 05/2026
Download
Installation Instructions (EA)
EA Flow assembly kit for CFS51 Retrofit kit / replacement for flow assembly of CFS51
English version - 04/2024
Download
Operating Instruction (BA)
BA Memosens CFS51 Sensor for fluorescence measurement
English version - 05/2026
Download
The CAD Drawings will be available after the configuration.
All downloads
22 Downloads
Technical Information (TI)
Most downloaded
TI Memosens CFS51 Sensor for fluorescence measurement
English version - 05/2026
Download
Operating Instruction (BA)
BA Memosens CFS51 Sensor for fluorescence measurement
English version - 05/2026
Download
Installation Instructions (EA)
Most downloaded
EA Flow assembly kit for CFS51 Retrofit kit / replacement for flow assembly of CFS51
English version - 04/2024
Download
Installation Instructions (EA)
Kit Durchflussarmatur für CFS51 Nachrüstung / Ersatz für Durchflussarmatur von CFS51
German version - 03/2022
Download
Innovation (IN)
Memosens CFS51 Low-maintenance PAHsensor for wash water monitoring in marine
exhaust gas cleaning systems
English version - 10/2025
Download
Manufacturer Declaration
Product family: Memosens Product root: CFS51-
Declaration number: HE_02249_01.25
Manufacturer specification: RoHS
Additional information: China-RoHS
English version - 10/2025
Download
EU Declaration
Product family: Memosens Product root: CFS51-
Declaration number: EU_01051_01.22
English version - 07/2022
Download
UK Conformity Assessed
Product family: Memosens Product root: CFS51-
Declaration number: UK_00498_01.22
English version - 07/2022
Download
Miscellaneous
Product family: Memosens Product root: CFS51-
Region: Eurasian Economic Union
Approval agency: EAC
Approval number: ЕАЭС KZ 7500525.13.12.00630
Russian version - 02/2025
Download
Marine
Product family: ConduMax W, InduMax P, Memosens, Messkabel, OrbiPac, OrbiSint, OxyMax H, Turbimax Product root: CFS51-, CLS21D-, CLS21E-, CLS50D-, CLS82D-, COS81D-, CPF81D-, CPF81E-, CPS11D-, CPS11E-, CPS12D-, CPS12E-, CUS50D-, CU
S52D-, CYK10-, OCPS11E-
Region: International
Approval agency: DNV
English version - 12/2024
Download
Marine
Product family: Memosens Product root: CFS51-
Region: International
Approval agency: BV
English version - 01/2025
Download
Marine
Product family: InduMax P, Memosens, Turbimax Product root: CFS51-, CLS21E-, CLS50D-, CPF81E-, CPS11E-, CPS12E-, CUS50D-, CUS52D-
Region: China
Approval agency: CCS
Chinese version - 12/2025
Download
Marine
Product family: InduMax P, Memosens, Turbimax Product root: CFS51-, CLS21E-, CLS50D-, CPF81E-, CPS11E-, CPS12E-, CUS50D-, CUS52D-, OCPS11E-
Region: International
Approval agency: LR
English version - 05/2025
Download
Marine
Product family: Memosens Product root: CFS51-
Region: International
Approval agency: ABS
English version - 10/2022
Download
Components sheet
Kit CFS51 sensor adapter titanium SF Kit CFS51 sensor adapter titanium
English version - 08/2026
Download
Components sheet
Kit CFS51 cleaning adapter PVDF SF Kit CFS51 cleaning adapter PVDF
English version - 08/2026
Download
Components sheet
Kit CFS51 coupling nut+ring clamp SF Kit CFS51 coupling nut+ring clamp
English version - 08/2026
Download
Components sheet
Kit CFS51 2x adapter G1/4 - 8 mm OD PVDF SF Kit CFS51 2x adapter G1/4 - 8 mm OD PVDF
English version - 08/2026
Download
Components sheet
Kit CFS51 check valve 6 mm OD PVDF SF Kit CFS51 check valve 6 mm OD PVDF
English version - 08/2026
Download
Components sheet
Kit CFS51 scrubber flow assembly SF Kit CFS51 scrubber flow assembly
English version - 08/2026
Download
Components sheet
Kit CFS51 2x hose support DN6/8 SF Kit CFS51 2x hose support DN6/8
English version - 08/2026
Download
Components sheet
Kit CFS51 gasket kit scrubber assembly SF Kit CFS51 gasket kit scrubber assembly
English version - 08/2026
Download

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Memosens CFS51 PAH sensor
Digital PAH sensor

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Spare parts

further parts
further parts

Kit CFS51 scrubber flow assembly

further parts
further parts
Order code 71546713
further parts
further parts

Kit CFS51 gasket kit scrubber assembly

further parts
further parts
Order code 71546714
further parts
further parts

Kit CFS51 sensor adapter titanium

further parts
further parts
Order code 71546716
further parts
further parts

Kit CFS51 coupling nut+ring clamp

further parts
further parts
Order code 71546718
Spare parts

Selection of compatible products

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