Memosens CLS82E

Summary

Product identification

Memosens CLS82E - Hygienic conductivity sensor with Memosens technology.

Application

Designed for measurements where very diverse conductivities must be measured in a single system. Typical applications include:

• Phase separations
• Chromatography
• Fermentations
• CIP monitoring in small pipes
• Ultrafiltration
• Ballast water cleaning on ships
• Ship's wake water cleaning

Measuring principle

The sensor utilizes a four-electrode system with an alternating current applied via the outer electrodes and voltage measured at the inner electrodes. This method suppresses electrochemical effects.

Measuring system

A complete measuring system includes:

• Conductivity sensor Memosens CLS82E
• Transmitter (e.g., Liquiline M CM42)
• Measuring cable (e.g., Memosens data cable CYK10)

Communication and data processing

Digital sensors with Memosens technology require a Memosens transmitter for data communication. Sensor data, including calibration information and operating data, are stored digitally within the sensor.

Dependability

Reliability

Memosens technology digitizes measured values within the sensor and uses a shielded transmission to the transmitter, ensuring reliable detection and reporting of sensor failures or connection interruptions.

Maintainability

Integrated electronics in Memosens sensors store calibration data and operating history, enabling:

• Easy calibration in a lab environment.
• Quick replacement of precalibrated sensors, increasing measuring point availability.
• Predictive maintenance based on sensor load data.
• Documentation of sensor history for application determination.

Integrity

Inductive, non-contact data transmission via Memosens technology ensures process safety by eliminating issues related to moisture and corrosion at the connection.

Input

Measured variables

• Conductivity
• Temperature

Measuring ranges

• Conductivity: 1 µS/cm to 500 mS/cm (relative to water at 25 °C)
• Temperature: -5 to 140 °C (23 to 284 °F)

Cell constant

• k = 0.57 cm⁻¹

Temperature compensation

• Pt1000 (Class A according to IEC 60751)

Performance characteristics

Measurement uncertainty

• Cell constant determination: 1.0 %

Response time

• Conductivity: t<0xE2><0x82><0x95> ≤ 2 s
• Temperature (with Pg 13.5 or Clamp, with temperature prediction): t<0xE2><0x82><0x90> ≤ 16 s
• Temperature (with other process connection, with temperature prediction): t<0xE2><0x82><0x90> ≤ 28 s

Measurement error

• Conductivity (1 µS/cm to 1 mS/cm): ≤ 2 % of reading
• Conductivity (1 mS/cm to 500 mS/cm): ≤ 4 % of reading
• Temperature (with Pg 13.5 or Clamp, -5 to 100 °C): ≤ 0.5 K
• Temperature (with Pg 13.5 or Clamp, 100 to 140 °C): ≤ 1.0 K
• Temperature (with other process connection, -5 to 140 °C): ≤ 1.0 K

Repeatability

• Conductivity: ≤ 0.2 % of reading
• Temperature: ≤ 0.05 K

Mounting

Installation instructions

Symmetrical installation is recommended. Maintain a minimum distance of 15 mm from sensor to side and opposite walls. Installation factors may be required for confined spaces and can be determined using calibration solutions.

Environment

Ambient temperature

• -20 to 60 °C (-4 to 140 °F)

Storage temperature

• -25 to +80 °C (-10 to +180 °F)

Relative humidity

• 5 to 95 %

Degree of protection

• IP 68 / NEMA type 6P

Process

Process temperature

• Normal operation: -5 to 120 °C (23 to 248 °F)
• Sterilization (max. 45 min.): Max. 140 °C (284 °F) at 6 bar (87 psi)

Process pressure

• 17 bar (247 psi) at 20 °C (68 °F)
• 9 bar (131 psi) at 120 °C (248 °F)

Mechanical construction

Dimensions

Various process connections are available, including Clamp 1 ½", Clamp 2", G1, NPT1", DN 25 standard, DN 25 B. Braun, Pg 13.5, and Varivent N DN 40 - DN 125.

Weight

• Process connection Pg 13.5: 0.06 to 0.09 kg (0.13 to 0.20 lbs)
• Process connection G1 or NPT: approx. 0.9 kg (1.98 lbs)

Materials (in contact with medium)

• Sensor element: Platinum and ceramic (zirconium oxide)
• Process connection: Stainless steel 1.4435 (AISI 316L)
• Seal (specific versions): EPDM

Surface roughness

• Ra < 0.38 µm

Certificates and approvals

The product is certified according to various standards, including EHEDG, 3-A, FDA, cGMP, and ASME BPE. Specific Ex approvals depend on the product version.

External standards and guidelines

The product is EAC certified according to guidelines TP TC 004/2011 and TP TC 020/2011.

Ordering information

Details for product configuration and ordering are available on the product page at www.endress.com/cls82e.

Scope of delivery

The scope of delivery includes the sensor, operating instructions, safety instructions (optional), and a final inspection report.

Accessories

Measuring cable

• Memosens data cable CYK10
• Memosens data cable CYK11

Calibration solutions

• Conductivity calibration solutions CLY11 are available in various concentrations.

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