logo

100% genuine products & Actual product photos
Sales & Support
Request A Quote - Email
Select Language
English
Français
Deutsch
Italiano
Русский
Español
Português
Nederlandse
ελληνικά
日本語
한국
Home
Products
Videos
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
News
Home ProductsE&H Instruments

Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5

All Products
Allen Bradley PLC Controllers (100)
Pepperl Fuchs Safety Barrier (136)
MTL Safety Barrier (69)
E&H Instruments (102)
Rosemount PH Sensors (60)
Bently Nevada Proximity Probe (48)
IFM Sensors (35)
ASCO Valves (19)
Yokogawa Instruments (148)
HONEYWELL Transmitter (27)
SICK Instruments (43)
Festo Cylinder (73)
EMERSON TREX Device Communicator (3)
SIEMENS PLC Products (100)
SMC Instruments (15)
ABB Positioner (57)
WAGO Connectors (31)
VEGA Instruments (210)
I'm Online Chat Now
Certification
China Achievers Automation Limited certification
China Achievers Automation Limited certification
"ACH has proven to be a reliable partner. Their products are genuine and high-quality, with competitive prices and on-time delivery. We trust them as our long-term supplier in automation."

—— Mohammed Al-Farsi, Procurement

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Procurement Manager

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Supply Chain Director

"ACH offers quick response, flexible solutions, and fair pricing. The products are always genuine and reliable, and their friendly support makes cooperation smooth."

—— Operations Manager

"ACH provides genuine products with stable quality and fair pricing. Their fast response and reliable delivery give us confidence to continue working with them."

—— Engineering Manager

"We value ACH for their consistent quality and competitive pricing. Deliveries are always reliable, and their professional support makes procurement much easier for our team."

—— Procurement Head

Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5

Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5
Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5 Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5 Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5 Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5

Large Image :  Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5 Get Best Price

Product Details:
Place of Origin: DE
Brand Name: Endress+Hauser
Certification: ATEX
Model Number: CPS11D-7BT21
Document: ACH-AB-P+F-E+H-IFM-ASCO-YOK...WA.pdf
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: Negotiable
Packaging Details: carton
Delivery Time: Negotiable
Payment Terms: T/T,XT,ALIPAY
Supply Ability: 100pcs per month
Contact Now
Detailed Product Description
Power Supply: 1 Ambient Temperature: -
Electrical Rating: G Certifications: S
Highlight:

Memosens pH electrode refillable KCl

,

Endress+Hauser CPS11D pH sensor

,

Pg 13.5 pH electrode 0-14 range

Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5
Endress+Hauser CPS11D-7BT21 digital pH sensor with Memosens 2.0. 0–14 pH range, refillable KCl/gel reference, PTFE diaphragm, Pg 13.5 process connection, IP68, for water & wastewater.

Product Overview

The Endress+Hauser CPS11D-7BT21​ 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 KCl/gel reference system​ (vs. the sealed gel version -7BA21), PTFE ring diaphragm, and a Pg 13.5 (Ø 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)

Parameter
Specification
Model / Order Code​
CPS11D-7BT21​
Measuring Principle​
Potentiometric (pH Glass Electrode)
Measuring Range​
0 … 14 pH​
Technology​
Memosens 2.0​ (Digital, Inductive)
Reference System​
Ag/AgCl, Refillable Gel/KCl, Double Chamber (KNO₃ bridge)
Junction / Diaphragm​
PTFE Ring Diaphragm​
Temperature Sensor​
NTC 30 kΩ​ (Integrated)
Connection​
Memosens Inductive Plug (C8Y)

Technical Specifications (Mechanical & Process)

Parameter
Specification
Housing Material​
PPS Plastic (Ryton®)​
Process Connection​
Pg 13.5​ (Metric: ~Ø27 mm, pitch 1.814 mm)
Immersion Length​
~120 mm (without protection guard)
Process Temperature​
0 … +110 °C​ (short-term +135 °C)
Process Pressure​
0.8 … 11 bar (abs)​ (decreases with temperature)
Protection Rating​
IP68​ (Submersible)
Application Class​
Standard / Non-Hazardous Area (AA)
Refill Electrolyte​
KCl 3 mol/L​ (Order separately, e.g. CPA640-xxx)

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 -7BA21, this -7BT21 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-7BA21:The -7BT21 is refillable​ (requires periodic KCl top-up), whereas -7BA21 is sealed gel​ (maintenance-free but shorter life in harsh media). Choose -7BT21 for longer campaigns or higher contamination risk; choose -7BA21 for low-maintenance standard duty.*

Endress+Hauser CPS11D-7BT21 | Memosens pH Electrode, 0–14 pH, Refillable KCl, Pg 13.5 0

More Products

Pepperl Fuchs Safety Barrier

Allen Bradley PLC Controllers

SICK Instruments 

Festo Cylinder 

IFM Sensors 

About ACH

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL  to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.

ACH industrial automation products
Frequently Ask & Questions
Are preferential prices available?

Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.

Are the Products Genuine OEM Units?

Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.

How will you arrange shipment?

We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.

What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.

Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

S
Siti Aisyah
Indonesia May 22.2026
Helpful (1)
Reliable, accurate, works great for industrial use!
L
Lina Kartika
Indonesia May 21.2026
Helpful (1)
Highly accurate, fast shipping, and works perfectly!
P
Priya
India May 11.2026
Helpful (1)
"Accurate temperature probe, works flawlessly in industrial conditions."
Tag:

e&h instruments,

e and h flow meter,

e&h flow meter

Contact Details
Achievers Automation Limited

Contact Person: sales2

Send your inquiry directly to us
About Us
Pepperl Fuchs Safety Barrier
Allen Bradley PLC Controllers
IFM Sensors
Contact Us
Privacy Policy | China Good Quality Allen Bradley PLC Controllers Supplier. © 2025 - 2026 Achievers Automation Limited. All Rights Reserved.