Memosens CCS55E

Summary

Product Identification

Memosens CCS55E: Digital sensor with Memosens technology for determining free bromine.

Application

The Memosens CCS55E sensor is designed for reliable measurement in:

• Seawater applications (e.g., desalination plants) for disinfection and efficient dosing.
• Process and cooling water where bromine disinfectants are used.
• Food industry for monitoring water in fish farming.
• Pool water and therapeutic baths as an alternative to chlorine.

Measuring Principle

Free bromine is determined via hypobromous acid (HOBr) using an amperometric measuring principle. HOBr diffuses through the sensor membrane and is reduced at the gold working electrode, while silver is oxidized at the silver counter electrode. This process generates a current proportional to the free bromine concentration. The concentration of HOBr is pH-dependent, and a simultaneous pH measurement is recommended for compensation. The transmitter converts the current signal to concentration in mg/l (ppm). The sensor can also measure organic bromination agents, with recalibration recommended for such applications.

Cross-sensitivity

Cross-sensitivities exist for: total bromine, free chlorine, total chlorine, chlorine dioxide, ozone, hydrogen peroxide, and peracetic acid.

Measuring System

A complete measuring system includes:

• Memosens CCS55E disinfection sensor (membrane-covered, ⌀25 mm) with a mounting adapter.
• Flowfit CYA27 flow assembly.
• Measuring cable CYK10 or CYK20.
• Transmitter (e.g., Liquiline CM44x or CM44xR with compatible firmware).
• Optional accessories: extension cable CYK11, proximity switch, Flexdip CYA112 immersion assembly, pH sensor CPS31E.

Input

Measured Variables

• Free bromine (HOBr) in units of mg/l, μg/l, ppm, or ppb.
• Temperature in °C or °F.

Measuring Range

• CCS55E-31AD: 0 to 5 mg/l (ppm) HOBr
• CCS55E-31BF: 0 to 20 mg/l (ppm) HOBr
• CCS55E-31CJ: 0 to 200 mg/l (ppm) HOBr

Signal Current

• CCS55E-31AD: 56 to 104 nA per 1 mg/l (ppm) HOBr
• CCS55E-31BF: 14 to 26 nA per 1 mg/l (ppm) HOBr
• CCS55E-31CJ: 14 to 26 nA per 1 mg/l (ppm) HOBr

Performance Characteristics

Reference Operating Conditions

• Temperature: 20 °C (68 °F)
• pH value: 6.5 ±0.2
• Flow: 40 to 60 cm/s
• Base medium: HOBr-free mains water

Response Time

• T90 < 20 s (after polarization complete).

Polarization Time

• Initial commissioning: 45 min
• Recommissioning: 20 min

Measured Value Resolution of Sensor

• At most 0.05% of the measured value above the limit of quantification (LOQ) under reference conditions.

Measurement Error

• ±2% and ±5 µg/l (ppb) of the measured value (whichever is greater).

Limit of Detection (LOD)

• CCS55E-31AD: 0.0008 mg/l (ppm)
• CCS55E-31BF: 0.0026 mg/l (ppm)
• CCS55E-31CJ: 0.0061 mg/l (ppm)

Limit of Quantification (LOQ)

• CCS55E-31AD: 0.0025 mg/l (ppm)
• CCS55E-31BF: 0.0085 mg/l (ppm)
• CCS55E-31CJ: 0.0203 mg/l (ppm)

Repeatability

• CCS55E-31AD: 0.0017 mg/l (ppm)
• CCS55E-31BF: 0.0087 mg/l (ppm)
• CCS55E-31CJ: 0.0476 mg/l (ppm)

Nominal Slope

• CCS55E-31AD: 80 nA per 1 mg/l (ppm) HOBr
• CCS55E-31BF: 20 nA per 1 mg/l (ppm) HOBr
• CCS55E-31CJ: 20 nA per 1 mg/l (ppm) HOBr

Long-term Drift

• < 1% per month (mean value).

Operating Time of the Electrolyte

• At 10% of measuring range and 20 °C: 2 years
• At 50% of measuring range and 20 °C: 1 year
• At maximum concentration and 55 °C: 60 days

Intrinsic Consumption

• The intrinsic consumption of bromine at the sensor is negligible.

Installation

Orientation

• Install the sensor at an angle of at least 15° to the horizontal.
• Do not install upside-down.

Immersion Depth

• At least 50 mm (1.97 in), corresponding to the mark on the sensor.

Installation Instructions

• Ensure minimum flow velocity of 16 cm/s (0.52 ft/s) at the membrane.
• For flow assemblies, ensure minimum volume flow of 5 l/h or 30 l/h.
• Counterpressure must not exceed 1 bar relative (2 bar absolute).
• Avoid negative pressure at the sensor.
• Filter heavily contaminated water to prevent buildup.

Environment

Ambient Temperature

• –20 to 60 °C (–4 to 140 °F)

Storage Temperature

• With electrolyte: 0 to 35 °C (32 to 95 °F) for long-term storage (up to 2 years), or 35 to 55 °C (95 to 131 °F) for storage up to 48 hours.
• Without electrolyte: –20 to 60 °C (–4 to 140 °F).

Degree of Protection

• IP68 (1.8 m (5.91 ft) water column over 7 days at 20 °C (68 °F)).

Process

Process Temperature

• 0 to 55 °C (32 to 130 °F), non-freezing.

Pressure

• Medium pressure upstream from the sensor membrane must not exceed 1 bar (14.5 psi) / 2 bar abs. (29 psi abs.).

pH Range

• Range of effectiveness: pH 5 to 10
• Calibration: pH 5 to 9
• Measurement: pH 5 to 10

Conductivity

• Can be used in media with very low conductivity. Attention must be paid to reduced pH buffer capacity. Electrolyte replacement frequency may need to increase.

Flow

• Flowfit CYA27 (5 l version): Minimum 5 l/h (1.3 gal/h)
• Flowfit CYA27 (30 l version): Minimum 30 l/h (7.9 gal/h)
• Flexdip CYA112: Minimum 16 cm/s (0.5 ft/s)

Mechanical Construction

Dimensions

See the official PDF for exact dimensions.

Weight

• Sensor with membrane cap and electrolyte (without protection cap and adapter): Approx. 95 g (3.35 oz).

Materials

• Sensor shaft: POM
• Membrane: PET
• Membrane cap: PVDF
• Protection cap: PC Makrolon (polycarbonate) vessel and cover, Kraiburg TPE TM5MED seal.
• Sealing ring: FKM
• Sensor shaft coupling: PPS

Cable Specification

• Max. 100 m (330 ft), including cable extension.

Scope of Delivery

• Disinfection sensor (membrane-covered, ⌀25 mm) with protective cap (ready for use).
• Bottle with electrolyte (50 ml (1.69 fl oz)).
• Replacement membrane cap in protective cap.
• Operating instructions.
• Manufacturer's certificate.

Accessories

• Maintenance kit CCV05 (includes membrane caps and electrolyte).
• Memosens data cable CYK10, CYK11, CYK20.
• Flowfit CYA27 flow assembly.
• Flexdip CYA112 immersion assembly.
• Photometer PF-3.
• Adapter kits for CYA27 and CYA112.
• Complete quick fastener kit for CYA112.
• COY8 Zero-point gel for oxygen and disinfection sensors.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror