Memosens CPS12E

Summary

Product identification

Memosens CPS12E ORP sensor for standard applications in process technology and environmental engineering with Memosens 2.0 technology.

Application

• Long-term monitoring and limit control in processes with stable process conditions
• Chemical industry
• Pulp and paper industry
• Power plants (e.g. flue gas cleaning)
• Incinerator plants
• Water treatment
• Drinking water
• Cooling water
• Well water

The sensor is available with ATEX, IECEx, CSA C/US, NEPSI, Japan and INMETRO approvals for use in hazardous areas Zone 0, Zone 1 and Zone 2.

Your benefits

• Robust sensor with long diffusion path for poisoning substances
• Low-maintenance due to large, dirt-repellent PTFE diaphragm
• Suitable for tough applications: process glass for highly alkaline media
• Can be used at pressures up to 17 bar (246.5 psi) (absolute)
• Integrated NTC 30K temperature sensor
• Different measuring elements for use in oxidizing and reducing media

Memosens technology advantages

• Maximum process safety thanks to non-contact, inductive signal transmission
• Data security thanks to digital data transmission
• Very easy to use as sensor data are saved in the sensor
• Predictive maintenance can be performed by recording sensor load data in the sensor

Function and system design

Measuring principle

• ORP measurement: Measures the potential of equilibria between oxidizing and reducing components using a platinum or gold electrode with an integrated Ag/AgCl reference system.
• Measuring system: Comprises the ORP sensor CPS12E, Memosens data cable (CYK10 or CYK20), and a compatible transmitter (e.g., Liquiline CM44, CM42). Various assemblies are available for installation.

ORP sensor options

• Gold electrode: For oxidizing media (e.g., cyanide oxidation, nitrite oxidation, ozone, hydrogen peroxide).
• Platinum electrode: For reducing media (e.g., chromate reduction) or chlorine dosing.

Communication and data processing

• Digital sensors with Memosens technology must be connected to transmitters with Memosens technology.
• Digital sensors store data including manufacturer information, serial number, order code, calibration data, operating data, and sensor history.

Input

• Measured variable: ORP, Temperature
• Measuring range: –1 500 to 1 500 mV

Performance characteristics

• Reference system: Ag/AgCl reference lead with Advanced Gel 3 M KCl

Installation

• Orientation: Install at an angle of at least 15° from the horizontal to prevent electrolyte separation from the diaphragm at elevated temperatures. Do not install upside-down.
• Installation instructions: Ensure assembly thread, O-rings, and sealing surface are clean and undamaged. Tighten sensor by hand with a torque of 3 Nm (2.21 lbf ft) when installing in Endress+Hauser assemblies.

Environment

• Ambient temperature range: –15 °C (5 °F) to 135 °C (275 °F) (Operating), 0 to 50 °C (32 to 122 °F) (Storage)
• Storage temperature: 0 to 50 °C (32 to 122 °F)
• 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: –15 to 135 °C (5 to 275 °F)
• Process pressure range: 0.8 to 17 bar (11.6 to 246.5 psi) absolute. Avoid rapid heating of pressurized sensors under reduced or atmospheric pressure.
• Conductivity: Minimum 50 μS/cm for reference system AA (with minimized flow; stable pressure and temperature required).

Mechanical construction

• Design, dimensions: See diagram 5. Available in installed lengths of 120 mm (4.72 in), 225 mm (8.86 in), 360 mm (14.17 in), and 425 mm (16.73 in).
• Weight: Ranges from 40 g (1.4 oz) to 100 g (3.5 oz) depending on installed length.
• Materials:
  • Sensor shaft: Glass
  • ORP measuring element: Platinum or gold
  • Metal lead: Ag/AgCl
  • Aperture: Ring-shaped PTFE diaphragm
  • O-ring: FKM
  • Process coupling: PPS fibre-glass reinforced
  • Nameplate: Ceramic metal oxide
  • Temperature sensor: NTC 30K
  • Plug-in head: Memosens plug-in head (pressure resistance 16 bar (232 psi) relative)
• Process connections: Pg 13.5

Certificates and approvals

• CE mark: Complies with EU directives.
• Ex approval: ATEX, IECEx, NEPSI, CSA C/US, Japan Ex, INMETRO approvals for use in hazardous areas. Ex versions are identified by an orange-red ring on the plug-in head.
• TÜV certificate: For Memosens plug-in head, pressure resistance 16 bar (232 psi) relative.
• EAC: Complies with TP TC 004/2011 and TP TC 020/2011.

Ordering information

• Product page for configuration: www.endress.com/cps12e

Scope of delivery

• Sensor in ordered version
• Operating Instructions
• Safety instructions for hazardous areas (for sensors with Ex approval)

Accessories

Various assemblies, buffer solutions, and measuring cables are available. Refer to the official product documentation for a complete list.

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