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Endress+Hauser
Endress+Hauser Memosens CPF81E Digital pH Sensor
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No online payment · add lines to RFQ BOM
Memosens 2.0 gel pH; 0–14 / harsh service; NPT ¾ in PPS. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
Application L: pH 0–14, 0–110 °C; Application N: pH 0–11, 0–80 °C
Process connection
NPT ¾ in top and bottom (PPS housing)
Electrical connection
Memosens plug; CYK10/CYK20 measuring cable to Liquiline transmitters
Sensor type
Memosens 2.0 digital gel-compact pH electrode with double-chamber reference (KNO₃ bridge) and PTFE diaphragm
Process Pressure
0.8 to 11 bar abs (11.6 to 159.5 psi abs)
Temperature Sensor
Integrated NTC 30K
Fits harsh-water and process pH where you need a Memosens CPF81E digital gel-compact electrode with double-chamber reference and NPT ¾ in PPS body.
Key advantages
- Memosens 2.0 — Digital gel-compact pH electrode; inductive plug to Liquiline via CYK10/CYK20
- Ranges — Application L: pH 0–14, 0–110 °C; Application N: pH 0–11, 0–80 °C
- Pressure — 0.8 to 11 bar abs (11.6 to 159.5 psi abs)
- Reference — Double-chamber with KNO₃ bridge and PTFE diaphragm
- Protection — IP68 (10 m water column, 25 °C, 45 days, 1 M KCl)
Typical applications
- Wastewater and process water pH with compact NPT install.
- Harsh media needing gel reference and PTFE diaphragm.
- Memosens/Liquiline digital loops replacing analog electrodes.
Selection guide
- Application class — L (0–14 / to 110 °C) vs N (0–11 / to 80 °C)
- Connection — NPT ¾ in top/bottom PPS; Memosens cable to transmitter
- Transmitter — Liquiline family pairing; CYK10/CYK20 cable length
- Process — Pressure/temperature within TI01594C limits
Common mistakes
- Selecting Application N when the process exceeds 80 °C or needs full 0–14 span.
- Ordering without a matching Memosens cable/transmitter.
- Ignoring pressure rating vs closed-loop pumping head.
When to RFQ / what to tell us
- pH span, temperature, and pressure.
- Application L vs N; cable/transmitter model.
- Quantity and ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 140815 |
| Brand | Endress+Hauser |
| Model | E+H Memosens CPF81E Digital pH Sensor |
| Product type | pH Sensor |
| Measuring range | Application L: pH 0–14, 0–110 °C; Application N: pH 0–11, 0–80 °C |
| Process pressure | 0.8 to 11 bar abs (11.6 to 159.5 psi abs) |
| Temperature sensor | Integrated NTC 30K |
| Sensor type | Memosens 2.0 digital gel-compact pH electrode with double-chamber reference (KNO₃ bridge) and PTFE diaphragm |
| Process connection | NPT ¾ in top and bottom (PPS housing) |
| Ingress protection | IP68 (10 m water column, 25 °C, 45 days, 1 M KCl) |
| Materials | Housing/shaft PPS; lead-free membrane glass; KNO₃ and KCl/AgCl reference system |
| Electrical connection | Memosens plug; CYK10/CYK20 measuring cable to Liquiline transmitters |
Documents
FAQ
Q: What pH ranges are offered? A: Application L: pH 0–14 to 110 °C; Application N: pH 0–11 to 80 °C.
Q: How does it connect? A: Memosens plug with CYK10/CYK20 cable to Liquiline transmitters; NPT ¾ in process.
Q: What should I send for a quote? A: Span/T/P, application class, transmitter/cable, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | Application L: pH 0–14, 0–110 °C; Application N: pH 0–11, 0–80 °C |
| Process connection | NPT ¾ in top and bottom (PPS housing) |
| Electrical connection | Memosens plug; CYK10/CYK20 measuring cable to Liquiline transmitters |
| Sensor type | Memosens 2.0 digital gel-compact pH electrode with double-chamber reference (KNO₃ bridge) and PTFE diaphragm |
| Process Pressure | 0.8 to 11 bar abs (11.6 to 159.5 psi abs) |
| Temperature Sensor | Integrated NTC 30K |
| Ingress Protection | IP68 (10 m water column, 25 °C, 45 days, 1 M KCl) |
| Materials | Housing/shaft PPS; lead-free membrane glass; KNO₃ and KCl/AgCl reference system |
| Storage Temperature | 0 to 50 °C (32 to 122 °F) |