Endress+Hauser CPF81E-AA5LAD1 | Digital pH Electrode, 0-14 pH, NPT 3/4"
Endress+Hauser CPF81E-AA5LAD1 digital pH sensor. Memosens 2.0 technology, 0-14 pH range, NTC 30k, PTFE diaphragm, IP68, for harsh water & wastewater.
Product Overview
The Endress+Hauser CPF81E-AA5LAD1 is a digital pH glass electrode from the Memosens CPF81E series. It features Memosens 2.0 digital technology for contactless signal transmission and lab calibration. Designed for harsh environments, it offers a 0–14 pH measuring range, integrated NTC 30k temperature sensor, and a PTFE ring diaphragm for resistance to fouling and poisoning ions.
Technical Specifications (Measurement & Electrical)
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Parameter
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Specification
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Model / Order Code
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CPF81E-AA5LAD1
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Measuring Principle
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Potentiometric (pH Glass Electrode)
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Measuring Range
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0 ... 14 pH
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Technology
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Memosens 2.0 (Digital, Inductive)
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Reference System
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Ag/AgCl, Gel, Double Chamber (KNO₃ bridge)
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Junction / Diaphragm
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PTFE Ring Diaphragm
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Temperature Sensor
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NTC 30 kΩ (Integrated)
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Connection
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Memosens Inductive Plug (C8Y)
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Technical Specifications (Mechanical & Process)
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Parameter
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Specification
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Housing Material
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PPS Plastic
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Process Connection
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NPT ¾" (Male Thread)
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Immersion Length
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~150 mm (with Protection Guard)
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Process Temperature
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0 ... 110 °C (L Version)
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Process Pressure
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0.8 ... 11 bar (abs)
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Protection Rating
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IP68 (Submersible)
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Application Class
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Standard / Non-Hazardous Area (AA)
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Key Features
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Memosens 2.0 Digital: Inductive coupling eliminates moisture issues and stores calibration data in the sensor head for predictive maintenance.
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Anti-Poisoning Design: Double-chamber reference with KNO₃ electrolyte provides high resistance to sulfide (S²⁻) and cyanide (CN⁻) poisoning.
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Robust Construction: PPS housing and PTFE diaphragm ensure long-term stability in abrasive and chemically aggressive media.
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Plug & Play: Pre-calibration capability allows lab calibration and quick sensor replacement without on-site recalibration.
Applications
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Wastewater Treatment: pH monitoring in inlet, neutralization, and outlet stages.
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Industrial Water: Cooling water, boiler feedwater, and chemical process control.
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Mining & Minerals: Flotation processes and leaching applications with abrasive slurries.
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.
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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.
