Endress+Hauser CYK10-A031 Replacement for Memosens

Product Overview

Endress+Hauser CYK10-A031 Replacement for Memosens: Seamless Transition & Legacy System Compatibility

Upgrading or replacing your Endress+Hauser Memosens measurement infrastructure doesn’t have to mean extended downtime or costly re-engineering. The CYK10-A031 Memosens digital measuring cable — 3 metres, IP68-rated — is a direct replacement and upgrade solution for aging or discontinued Memosens cable assemblies across the full CYK10 series. Whether your facility is migrating from an older analog sensor wiring topology to a fully digital Memosens architecture, or simply replacing a worn CYK10 cable in an existing installation, this unit delivers plug-and-play compatibility with minimal intervention.

The CYK10-A031 uses the standardised Memosens digital protocol, which transmits calibration data, sensor identity, and measured values over a single inductive, galvanically isolated connection. This eliminates the moisture ingress and signal drift problems common in legacy analog cable assemblies, making it the preferred upgrade path for water treatment, chemical dosing, food & beverage CIP/SIP, and pharmaceutical process monitoring environments.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from legacy Endress+Hauser wiring to a full Memosens digital architecture typically involves more than just swapping the cable. In practice, field engineers replacing a worn or discontinued CYK10 cable will also evaluate the condition of the connected sensor — commonly an Orbisint CPS11D pH/ORP sensor or a Memosens CPS71D digital pH sensor — both of which share the same Memosens M12 connector standard as the CYK10-A031 and require no re-wiring at the sensor head.

On the transmitter side, the Liquiline CM442 and CM444 multi-parameter transmitters are the primary receiving instruments for Memosens signals. If your existing installation uses an older Liquisys M CPM223 or Mycom S CPM153 transmitter with analog inputs, the migration path requires either a transmitter upgrade or the addition of a Memosens 2DS input module to the CM44x base unit — a straightforward rack-mount swap that preserves your existing DIN rail or panel cutout footprint.

For installations in hygienic or high-pressure environments, the Cleanfit CPA471 retractable assembly or Flexdip CYA112 immersion assembly are commonly paired with the CYK10-A031 to provide a complete sensor-cable-holder system. These assemblies maintain the same process connection geometry as their predecessors, meaning no pipe modification is required during the upgrade.

In multi-point monitoring panels, the CYK10-A031 is frequently deployed alongside the Liquistation CSF48 automatic sampler or the Liquiline System CA80 analyzer, where Memosens cables serve as the primary sensor interface. The digital protocol’s galvanic isolation is especially valuable in these environments, where ground loops from multiple cable runs in a shared control cabinet would otherwise introduce measurement errors.

For sites upgrading from a legacy PROFIBUS PA or HART 4–20 mA architecture, the Fieldgate FXA42 remote I/O gateway can bridge Memosens sensor data to existing PROFIBUS DP or Modbus TCP infrastructure without replacing the PLC or DCS layer — preserving your Siemens S7-300 or ABB AC800M controller investment while modernising the field instrument layer.

Retrofit Guidance FAQ

Q: Can I connect the CYK10-A031 directly to my existing analog transmitter?
A: No. The CYK10-A031 uses the Memosens digital protocol, which requires a Memosens-capable transmitter input. If your transmitter (e.g. Liquisys M CPM223) only supports analog inputs, you must either upgrade to a Liquiline CM44x transmitter or add a Memosens 2DS input module to a compatible CM44x base unit.

Q: Is the M12 connector on the CYK10-A031 compatible with all Memosens sensors?
A: Yes. All Memosens sensors using the standard M12 Memosens plug — including the CPS11D, CPS71D, COS61D, and CUS51D — are mechanically and electrically compatible with the CYK10-A031 without adapters.

Q: Does replacing the cable require re-calibration of the sensor?
A: No. Memosens sensors store calibration data onboard the sensor EEPROM, not in the cable. Swapping the CYK10-A031 does not erase or alter stored calibration coefficients. The transmitter will automatically read the sensor’s calibration history upon reconnection.

Q: What is the maximum cable extension or junction box compatibility?
A: The CYK10-A031 is a 3 m fixed-length cable. For longer runs, Endress+Hauser recommends using the CYK10 series in conjunction with a junction box (e.g. RIA15 loop indicator or a passive junction) rather than splicing. Total cable run should not exceed the transmitter’s specified Memosens cable length limit (typically 100 m for shielded installations).

Q: Is the CYK10-A031 suitable for use in Ex/ATEX hazardous areas?
A: The standard CYK10-A031 is not ATEX-certified. For hazardous area installations, consult the CYK10 series datasheet for Ex-rated variants and ensure your transmitter and sensor are also rated for the applicable zone classification.

Q: How do I verify the cable is functioning correctly after installation?
A: Connect the CYK10-A031 between the sensor and transmitter, then navigate to the transmitter’s diagnostic menu. A valid Memosens connection will display the sensor serial number, calibration date, and live measured value. Any communication fault will generate a specific diagnostic code (e.g. F041 or F042 on Liquiline CM44x) for targeted troubleshooting.

Warranty Assurance

Every CYK10-A031 unit supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes functional verification including connector integrity inspection, cable continuity check, and Memosens protocol handshake validation. Units that do not pass pre-shipment testing are not dispatched.

In the event of a confirmed defect within the warranty period, TOPNLMS provides direct replacement support with priority processing. Our after-sales response target is within 24 business hours of a warranty claim submission. Replacement units are dispatched from our Xiamen warehouse with full tracking, and defective units may be returned under our prepaid returns arrangement for confirmed warranty cases.

For procurement teams requiring documentation, we can provide a certificate of conformity, packing list, and commercial invoice upon request. Bulk orders (5 units or more) are eligible for pre-shipment inspection reports. All units are shipped in original or equivalent protective packaging to prevent transit damage.

Contact our technical sales team for lead time confirmation, volume pricing, and compatibility verification before placing your order.