Endress+Hauser CPS11D-7BT2G | Memosens pH Electrode, 0–14 pH, Pg 13.5, Gel Refillable

Endress+Hauser CPS11D-7BT2G | Memosens pH Electrode, 0–14 pH, Pg 13.5, Gel Refillable

Endress+Hauser CPS11D-7BT2G digital pH sensor with Memosens 2.0. 0–14 pH range, refillable gel/KCl reference, PTFE diaphragm, Pg 13.5 process connection, IP68, for water & wastewater.

Product Overview

The Endress+Hauser CPS11D-7BT2G​ is a digital pH glass electrode​ from the Memosens CPS11D series​ — the industry-standard sensor for continuous pH measurement in water, wastewater, and utility applications. It features Memosens 2.0 digital technology​ for contactless signal transmission and lab calibration. This variant has a refillable gel/KCl reference system​ (vs. the sealed gel version -7BA2G), PTFE ring diaphragm, and a Pg 13.5 (∅ 27 mm) threaded process connection. The sensor is suitable for measuring pH in the 0–14 range​ with integrated NTC 30kΩ temperature sensor.

Technical Specifications (Measurement & Electrical)

Technical Specifications (Mechanical & Process)

Key Features

• Memosens 2.0 Digital:​ Inductive coupling eliminates moisture issues at the connector, stores calibration data/sensor ID in the sensor head — enables lab pre-calibration and plug-and-play replacement.

• Refillable Reference:​ Unlike the sealed -7BA2G, this -7BT2G allows periodic KCl refill to extend service life in applications with high contamination or prolonged deployment.

• Anti-Poisoning Design:​ Double-chamber reference​ with KNO₃ bridge​ and PTFE ring diaphragm​ provides resistance to sulfide (S²⁻), cyanide (CN⁻), and heavy metal ion poisoning.

• System Compatibility:​ Connects directly to Liquiline CM442 / CM42 / CM82 transmitters​ or any Memosens-compatible system.

Applications

• Wastewater Treatment:​ pH monitoring in inlet, neutralization basins, and effluent discharge — especially where extended deployment benefits from electrolyte refresh.

• Drinking Water:​ Post-chlorination pH verification and raw water monitoring.

• Industrial Water:​ Cooling water, boiler feedwater, and chemical dosing control loops.

• Chemical Process (Mild):​ Acid/alkali concentration monitoring in non-aggressive process streams.

Difference vs. CPS11D-7BA2G:The -7BT2G is refillable​ (requires periodic KCl top-up), whereas -7BA2G is sealed gel​ (maintenance-free but shorter life in harsh media). Choose -7BT2G for longer campaigns or higher contamination risk; choose -7BA2G for low-maintenance standard duty.*