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Endress+Hauser

E+H Oxymax COS51D Optical DO Sensor

Part numberCOS51D-AA11A1Item numberCB-EH-009HS code9031.80
IPIP66/IP67 / IP68 subseaATEX / IECEx / CSA / FM / SIL2/3 (IEC 61508)
Sensors & Instrumentation
Water Analysis Meters
MOQ:1

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Product Description

Endress+Hauser COS51D-AA11A1 Oxymax COS51D optical DO sensor with Memosens connection. Calibration-free, 2-year cap, hygienic process + WWTP.

Technical Specifications

IP rating
IP66/IP67 / IP68 subsea
Approval
ATEX / IECEx / CSA / FM / SIL2/3 (IEC 61508)
Standards
IECEx, IEC 61508, ISO 7027 (turbidity), ISO 10523 (pH)
Approvals
CSA, ATEX, IECEx, FM
HS code
9031.80

Standards & Compliance

IP Rating
IP66/IP67 / IP68 subsea
Classification / Approval
ATEX / IECEx / CSA / FM / SIL2/3 (IEC 61508)
HS Code
9031.80

Product Documentation

Document preview: Endress+Hauser Oxymax COS51D — Technical Information (TI00413C)

Catalogue entry last verified: 2026-08-29. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.

Frequently asked questions

Where can I buy COS51D-AA11A1?
COS51D-AA11A1 can be ordered from cballast.com as a Endress+Hauser catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
What is the manufacturer part number for this Endress+Hauser product?
The manufacturer part number is COS51D-AA11A1.
What is the HS code for COS51D-AA11A1?
The customs tariff (HS) code for COS51D-AA11A1 is 9031.80.
Who manufactures COS51D-AA11A1?
COS51D-AA11A1 is a Endress+Hauser product in the Sensors & Instrumentation range.
Is a datasheet available for COS51D-AA11A1?
Yes — the COS51D-AA11A1 datasheet can be viewed and downloaded on this page.
What is the minimum order quantity for COS51D-AA11A1?
The minimum order quantity is 1.
Is COS51D-AA11A1 available?
Yes — COS51D-AA11A1 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).