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Compact conductivity device Smartec CLD18

Toroidal conductivity measuring system for hygienic applications

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Compact conductivity device Smartec CLD18

Toroidal conductivity measuring system for hygienic applications

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Benefits

  • Unique hygienic design avoids contamination
  • 3-A approval
  • Compliant with EG 2023/2006 and 1935/2004
  • Suitable for cleaning-in-place (CIP)
  • Smart and easy integration into your plant infrastructure thanks to optional IO-Link protocol
  • Compact design permits installation in small tubes without restricting the flow

Integrated technologies

IO-Link digital communication technology
FLEXible answers to individual needs
Current product

Compact conductivity device Smartec CLD18

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  • Standard products
  • Reliable, robust and low-maintenance

What is FLEX?

FLEX selections
Technical excellence
Simplicity
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Fundamental selection Meet your basic measurement needs
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Lean selection Handle your core processes easily
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Extended selection Optimize your processes with innovative technologies
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Xpert selection Master your most challenging applications
Variable
Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

Learn more

Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

Learn more

24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Technology
IO-Link digital communication technology

IO-Link communication

IO-Link communication helps to digitalize your plant

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Office situation support
Have questions about this product?

Product information

Smartec CLD18  is a compact toroidal conductivity system for the beverage industry.
Conductivity measuring system
Specifications
Measuring / Application task Conductivity
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Description

Smartec CLD18 is the cost-effective solution for all applications in beverage plants where small tubes are used and where the toroidal measurement is used as a switch function. The combination of a transmitter and a sensor is interference-free, easy-to-use and features a hygienic design that protects your products and processes from contamination. Smartec CLD18 ensures the Overall Equipment Effectiveness (OEE) of your plant thanks to fast and reliable CIP and optional IO-Link protocol.

Field of application

The hygienic Smartec CLD18 measures toroidal conductivity in beverage applications:

  • Control of CIP processes in the return channel
  • Concentration control in remaking of CIP cleaning agents
  • Product monitoring in pipe systems, bottling plants
  • Beer - Push water interphase
  • Beer - Water cut for brewing lines
  • Leakage monitoring

It features the following protocols and interfaces:

  • 0/4...20mA
  • IO-Link (optional)
Benefits
  • Unique hygienic design avoids contamination
  • 3-A approval
  • Compliant with EG 2023/2006 and 1935/2004
  • Suitable for cleaning-in-place (CIP)
  • Smart and easy integration into your plant infrastructure thanks to optional IO-Link protocol
  • Compact design permits installation in small tubes without restricting the flow
Predecessors
CLD133, CLD633
Downloads
Most downloaded
Technical Information (TI)
Smartec CLD18 Compact inductive conductivity measurement for the food and beverage
industry
English version - 06/2021
Download
Operating Instruction (BA)
Smartec CLD18 Conductivity measuring system
English version - 08/2020
Download
Operating Instruction (BA)
Smartec CLD18 Conductivity measuring system
IO-Link
English version - 10/2021
Download
The CAD Drawings will be available after the configuration.
All downloads
41 Downloads
Technical Information (TI)
Most downloaded
Smartec CLD18 Compact inductive conductivity measurement for the food and beverage
industry
English version - 06/2021
Download
Operating Instruction (BA)
Most downloaded
Smartec CLD18 Conductivity measuring system
English version - 08/2020
Download
Operating Instruction (BA)
Smartec CLD18 Conductivity measuring system
IO-Link
English version - 10/2021
Download
Special Documentation (SD)
SD Hygienic applications Liquid analysis equipment
English version - 08/2023
Download
Special Documentation (SD)
SD Endress+Hauser IO-Link devices Endress+Hauser IO-Link device function blocks
For Siemens TIA Portal
English version - 07/2026
Download
Special Documentation (SD)
SD Endress+Hauser IO-Link devices Endress+Hauser IO-Link Add-On Instructions
for Rockwell Automation Studio 5000®
English version - 07/2026
Download
Fields of Activities (FA)
Sensors, transmitters, compact devices and assemblies Experts in Liquid Analysis
English version - 02/2026
Download
Fields of Activities (FA)
Sensoren, Messumformer, Kompaktgeräte and Armaturen Kompetenz in der Flüssigkeitsanalyse
German version - 02/2026
Download
Fields of Activities (FA)
Endress+Hauser 水質分析計ファミリ ラインナップと事例
Japanese version - 03/2017
Download
Fields of Activities (FA)
Sensori, trasmettitori, dispositivi compatti e armature Sensori, trasmettitori,
dispositivi compatti e armature
Esperti in materia di analisi dei
liquidi
Italian version - 06/2026
Download
Competence Brochure (CP)
Conductivity measurement in industrial processes Selection and engineering guide for different industries and
applications
English version - 04/2023
Download
Competence Brochure (CP)
Leitfähigkeitsmessung in Industrieprozessen Auswahl- und Engineeringhilfe für verschiedene Industrien und
Anwendungen
German version - 04/2023
Download
Innovation (IN)
Transmetteur de conductivité compact Smartec CLD18 – conçu pour l’industrie agroalimentaire
French version - 11/2021
Download
Innovation (IN)
Kompakt und effizient Leitfähigkeits­system Smartec­ CLD18 sorgt für Zuverlässigkeit in der
Getränke­industrie
German version - 11/2021
Download
Innovation (IN)
Compact and efficient Toroidal conductivity system Smartec­ CLD18 – designed for the ­beverage
industry
English version - 11/2021
Download
Manufacturer Declaration
Product family: SmarTec Product root: CLD18-
Declaration number: HE_01339_01.20
Manufacturer specification: RoHS
English version - 09/2020
Download
Manufacturer Declaration
Product family: SmarTec Product root: CLD18-
Declaration number: HE_01929_04.25
Manufacturer specification: Food hygiene
Additional information: Japan Food contact material
English version - 07/2025
Download
Manufacturer Declaration
Product family: SmarTec Product root: CLD18-
Declaration number: HE_01930_02.25
Manufacturer specification: RoHS
Additional information: China-RoHS
English version - 07/2025
Download
Manufacturer Declaration
Product family: SmarTec Product root: CLD18-
Declaration number: HE_02011_02.25
Manufacturer specification: Food hygiene
Additional information: China FCM, GB 4806
English version - 01/2025
Download
Manufacturer Declaration
Product family: SmarTec Product root: CLD18-
Declaration number: HE_01932_02.26
Manufacturer specification: Food hygiene, 10/2011, 1935/2004
English version - 08/2026
Download
FDA Declaration
Product family: SmarTec Product root: CLD18-
Declaration number: FDA_00161_02.24
English version - 06/2024
Download
EU Declaration
Product family: SmarTec Product root: CLD18-
Declaration number: EC_00369_04.24
English version - 02/2024
Download
UK Conformity Assessed
Product family: SmarTec Product root: CLD18-
Declaration number: UK_00576_01.24
English version - 02/2024
Download
Product Carbon Footprint Information
Product family: SmarTec Product root: CLD18-
Declaration number: ED_00213_01.25
English version - 02/2025
Download

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Spare parts and accessories

further parts
further parts

Kit CLD18 Housing upper part plastic

further parts
further parts
Order code 71228583
further parts
further parts

Kit CLD18 Housing upper part st. steel

further parts
further parts
Order code 71228584
further parts
further parts

Adapter 2 1/4" for SMARTEC-T

further parts
further parts
Order code 51506592

Kit CLD18 Upgrade IO-Link

Order code 71526058
Spare parts & accessories
Smartec CLD18  is a compact toroidal conductivity system for the beverage industry.
Conductivity measuring system

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Smartec CLD18  is a compact toroidal conductivity system for the beverage industry.
Conductivity measuring system
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Configuration support

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Add your product to the cart and request a quote. Whether it is un-configured, partially configured, or fully configured, our experts will contact you to complete the configuration and provide your quote.

Have questions before you start?

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Spare parts and accessories

further parts
further parts

Kit CLD18 Housing upper part plastic

further parts
further parts
Order code 71228583
further parts
further parts

Kit CLD18 Housing upper part st. steel

further parts
further parts
Order code 71228584
further parts
further parts

Adapter 2 1/4" for SMARTEC-T

further parts
further parts
Order code 51506592

Kit CLD18 Upgrade IO-Link

Order code 71526058
Spare parts & accessories