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Flowfit COA30 oxygen sensor calibration
New

Quickly install and precisely calibrate oxygen sensors with test gases, ensuring reliable measurements and smooth processes

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Have questions about this product?

Flowfit COA30 oxygen sensor calibration
New

Quickly install and precisely calibrate oxygen sensors with test gases, ensuring reliable measurements and smooth processes

Get a quote
Office situation support
Have questions about this product?

Benefits

  • Precise calibration of your oxygen sensors with test gases: Flowfit COA30 enables precise calibration of your oxygen sensors, perfectly tailored to the requirements of the respective measuring point.
  • Easy calibration of oxygen sensors with different sensor lengths from 120 mm to 420 mm: Install the sensor in the flow cell, connect it to the transmitter, attach the appropriate test gas, calibrate – done.
  • With Flowfit COA30, you save significant time during zero-point calibration and avoid additional cleaning. Calibration is performed using test gases such as nitrogen – completely residue-free and effortless.
  • Flexible oxygen measurement directly at the process – even without a fixed measuring point (only with the PMMA version)
  • Maximum efficiency: calibration of the measuring point in the process without removing the installed sensor (only with the PMMA version)
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.

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Product information

Flowfit COA30 for simple calibration of oxygen sensors
Flow cell for oxygen sensor calibration
Specifications
Measuring / Application task Oxygen
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Description

Flowfit COA30 is an efficient tool for calibrating your oxygen sensors. It ensures precise results and can be flexibly adapted to different measurement requirements. Thanks to its compact design, it is quickly ready for use anywhere, supporting reliable operations. Flowfit COA30 is used wherever precise and efficient calibration of oxygen sensors is required.

Field of application

The PMMA version of Flowfit COA30 is suitable for liquids and enables manual oxygen measurements directly at the process – even without an installed measuring point. Where measuring points exist, calibration with Flowfit COA30 is easier since the sensor need not be removed. Flowfit COA30 is used in various applications, such as:

Power & Energy:
- Water and steam cycles

Life Sciences:
- Fermentation processes

Food & Beverage:
- Preparation
- Filling
- Storage

Chemical:
- Inertization

Benefits
  • Precise calibration of your oxygen sensors with test gases: Flowfit COA30 enables precise calibration of your oxygen sensors, perfectly tailored to the requirements of the respective measuring point.
  • Easy calibration of oxygen sensors with different sensor lengths from 120 mm to 420 mm: Install the sensor in the flow cell, connect it to the transmitter, attach the appropriate test gas, calibrate – done.
  • With Flowfit COA30, you save significant time during zero-point calibration and avoid additional cleaning. Calibration is performed using test gases such as nitrogen – completely residue-free and effortless.
  • Flexible oxygen measurement directly at the process – even without a fixed measuring point (only with the PMMA version)
  • Maximum efficiency: calibration of the measuring point in the process without removing the installed sensor (only with the PMMA version)
Downloads
Most downloaded
Technical Information (TI)
TI Flowfit COA30 Flow cell for calibrating oxygen sensors with a length of 120 to 420 mm and a diameter of 12 mm
English version - 01/2026
Download
Operating Instruction (BA)
BA Flowfit COA30 Flow cell for calibrating oxygen sensors with a length of 120 to 360 mm and a diameter of 12 mm
English version - 05/2025
Download
Technical Information (TI)
TI Flowfit COA30 Flow cell for calibrating oxygen sensors with a length of 120 to 360 mm and a diameter of 12 mm
English version - 05/2025
Download
The CAD Drawings will be available after the configuration.
All downloads
16 Downloads
Technical Information (TI)
TI Flowfit COA30 Flow cell for calibrating oxygen sensors with a length of 120 to 360 mm and a diameter of 12 mm
English version - 05/2025
Download
Technical Information (TI)
Most downloaded
TI Flowfit COA30 Flow cell for calibrating oxygen sensors with a length of 120 to 420 mm and a diameter of 12 mm
English version - 01/2026
Download
Operating Instruction (BA)
Most downloaded
BA Flowfit COA30 Flow cell for calibrating oxygen sensors with a length of 120 to 360 mm and a diameter of 12 mm
English version - 05/2025
Download
Operating Instruction (BA)
BA Flowfit COA30 Flow cell for calibrating oxygen sensors with a length of 120 to 420 mm and a diameter of 12 mm
English version - 01/2026
Download
Installation Instructions (EA)
EA Flowfit COA30 For the maintenance of the COA30 assembly
English version - 06/2025
Download
Installation Instructions (EA)
EA Flowfit COA30 For replacing the seal of the COA30
English version - 06/2025
Download
Manufacturer Declaration
Product family: Flowfit Product root: COA30-
Declaration number: HE_02066_01.25
Manufacturer specification: PED
English version - 04/2025
Download
Manufacturer Declaration
Product family: Flowfit Product root: COA30-
Declaration number: HE_02055_01.25
Manufacturer specification: PED
English version - 04/2025
Download
Manufacturer Declaration
Product family: Flowfit Product root: COA30-
Declaration number: HE_02166_01.25
Manufacturer specification: RoHS
German version - 06/2025
Download
Components sheet
CS for Flowfit COA30 Components Sheet for COA30-*CA* Hose Connection
English version - 09/2025
Download
Components sheet
CS for Flowfit COA30 Components Sheet for COA30 Edge protection
English version - 09/2025
Download
Components sheet
CS for Flowfit COA30 Components Sheet for COA30 Needle valve
English version - 09/2025
Download
Components sheet
CS for Flowfit COA30 Components Sheet for COA30-*CB* Hose Connection
English version - 09/2025
Download
Components sheet
CS for Flowfit COA30 Components Sheet for COA30 Blind plug
English version - 09/2025
Download
Components sheet
CS for Flowfit COA30 Components Sheet for COA30 Adapt. for Sensor >120 mm
English version - 09/2025
Download
Components sheet
CS for Flowfit COA30 Components Sheet for COA30 Sealingsset
English version - 09/2025
Download

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Spare parts and accessories

further parts
further parts

Kit COA30 needle valve

further parts
further parts
Order code 71685364
further parts
further parts

Kit COA30-CA 2x Hose Connection

further parts
further parts
Order code 71685366
further parts
further parts

Kit COA30-CB 2x Hose Connection

further parts
further parts
Order code 71685378
further parts
further parts

Kit COA30 2x edge protection

further parts
further parts
Order code 71685381
Spare parts and accessories
Flowfit COA30 for simple calibration of oxygen sensors
Flow cell for oxygen sensor calibration
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Spare parts and accessories

further parts
further parts

Kit COA30 needle valve

further parts
further parts
Order code 71685364
further parts
further parts

Kit COA30-CA 2x Hose Connection

further parts
further parts
Order code 71685366
further parts
further parts

Kit COA30-CB 2x Hose Connection

further parts
further parts
Order code 71685378
further parts
further parts

Kit COA30 2x edge protection

further parts
further parts
Order code 71685381
Spare parts and accessories