Endress+Hauser CPS11E-AA7AAA2 pH/ORP Sensor Technical Specifications

The Endress+Hauser CPS11E-AA7AAA2 is a high-performance, digital Memosens pH/ORP (Oxidation-Reduction Potential) sensor designed for demanding industrial process measurement applications. This rugged sensor combines MEMOSENS technology for predictive maintenance with digital data integrity for reliable pH monitoring in chemical processing, water treatment, and industrial manufacturing environments.

Key Features & Benefits

Memosens Digital Technology

Predictive Maintenance: Digital storage of sensor-specific data (calibration history, operating hours, temperature exposure) enables condition-based maintenance

Contactless Inductive Coupling: Ensures reliable, moisture-proof data transmission without corrosion-prone electrical contacts

Plug-and-Play Operation: Pre-calibrated sensors reduce commissioning time and minimize handling errors

Robust Sensor Design

CPS11E Platform: Features a pressurized reference system with electrolyte reservoir for stable measurements in challenging applications

AA7AAA2 Configuration: Includes a built-in Pt1000 temperature sensor for automatic temperature compensation (ATC)

Ceramic Diaphragm: Resists clogging and provides excellent chemical resistance in harsh media

Process Compatibility

Application Code AA7AAA2:

AA: Built-in temperature sensor (Pt1000)

7: Pressurized reference system with KCl electrolyte

A: Open junction (ceramic)

A: Ag/AgCl reference element

A: pH-sensitive glass membrane

A: PPS/U polymer body, PUR cable

Technical Specifications

Parameter Specification

Measurement Range pH 0–14, ORP -1500 to +1500 mV

Temperature Range -5 to 130°C (23 to 266°F)

Pressure Rating Up to 6 bar (87 psi) at 25°C

Process Connection VARIVENT, NPT, or ISO thread options

Electrical Connection Memosens digital inductive coupling

Electrolyte System Pressurized reference with 3 mol/L KCl

Membrane Material High-temperature pH glass

Body Material PPS (Polyphenylene sulfide)

Cable PUR, 5 meters standard