Memosens CPL51E

Summary

Product identification

• Product name: Memosens CPL51E
• Product type: pH sensor for laboratory measurements and random sampling in the field
• Technology: Digital with Memosens 2.0 technology
• Document revision: TI01672C/07/EN/01.20-00, 2022-01-03

Application

Measurements in drinking water, wastewater and process water.

Your benefits

• Simple to use, extremely versatile
• Physical protection of glass membrane
• Minimum risk of contamination thanks to open aperture diaphragm
• Fast response time even in cold, ion-weak water
• Integrated temperature sensor for automatic temperature compensation
• Suitable for use with Liquiline Mobile, Liquiline To Go and Memobase Plus

Other advantages of Memosens technology

• Maximum analysis safety with non-contact, inductive signal transmission
• Data security thanks to digital data transmission
• Very easy to use as sensor data saved in the sensor

Function and system design

Measuring principle: pH measurement

The pH value is used as a unit of measurement for the acidity or alkalinity of a medium. The membrane glass of the electrode delivers an electrochemical potential that depends on the pH value of the medium. This potential is generated by the selective accumulation of H⁺ ions on the outer layer of the membrane. As a result, an electrochemical boundary layer with an electrical potential difference forms at this point. An integrated Ag/AgCl reference system serves as the required reference electrode. The measured voltage is converted to the corresponding pH value using the Nernst equation.

Measuring system

• Transmitter CML18
• Smartphone with Smartblue app (optional)
• Memosens CPL51E

Communication and data processing

• Always connect digital laboratory sensors with Memosens technology to a handheld device with Memosens technology, e.g. CML18.

Digital laboratory sensors can store measuring system data in the sensor, including:

• Manufacturer data
• Serial number
• Order code
• Date of manufacture
• Calibration data
• Calibration date
• Number of calibrations
• Serial number of the handheld device used to perform the last calibration or adjustment
• Application data
• Temperature application range
• pH application range
• Date of initial commissioning

Input

• Measured variable: pH value, Temperature

Measuring range

• pH value: 0 to 14 pH
• Temperature: 0 to 80 °C (32 to 176 °F)

Performance characteristics

• Reference system: Ag/AgCl lead, bridging electrolyte: gel KCl, 3M, AgCl-free

Environment

• Ambient temperature range: Do not use the sensor at temperatures below 0 °C (32 °F) (Risk of damage from frost).
• Storage temperature: 0 to 50 °C (32 to 122 °F), non-freezing
• Degree of protection: IP 68 (10 m (33 ft) water column, 25 °C (77 °F), 45 days, 1 M KCl)
• Electromagnetic compatibility (EMC): Interference emission and interference immunity as per EN 61326-1: 2013

Process

• Process temperature range: 0 to 80 °C (32 to 176 °F)

Mechanical construction

• Dimensions: Ø 11.9 (0.47) x 120 (4.7) mm (in)
• Weight: 33 g (1.2 oz)
• Materials:
  • Sensor shaft: PEEK
  • Metal lead: Ag/AgCl
  • Nameplate: Ceramic metal oxide
  • Junction: Open junction
  • Temperature sensor: NTC 30K
  • Plug-in head: Memosens laboratory plug-in head for digital, non-contact data transmission
• Process connections: Pg 13.5

Accessories

• Memosens data cable CYK10
• Memosens laboratory cable CYK20
• Liquiline Mobile CML18
• Memobase Plus CYZ71D
• Buffer solutions from Endress+Hauser - CPY20

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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