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See the PMS-B sensor
in action (coming soon)

See the PMS-B in operation.
Click the button to watch the video.

Why choose the PMS-B Sensor for your company?

Learn about the benefits of using the PMS-B Sensor in your company.

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Turning on the system the PMS-B Sensor will start rotating around the bubble and measure the thickness. Every time after completion of a full rotation the system will give information of all the thick and thin spots of the film.


With the completion of each rotation, the sensor passes the information of thickness distribution to the computer. Upon receiving this information the air ring starts working automatically to correct the thick and thin spots.

Technical features:

Measuring range: 6 – 500 µm
Resolution: 0,1 µm

Quality in
every detail

See our photo gallery of the PMS- Sensor. Measuring precision is the motto of PMS-B.

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01 FFT p
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03 polar p
04 SmartLip p

Present in
companies all over the world.

Large companies rely on our solutions.
We are a reference in technology for the plastic industry.

plasticos generales
Mega Steel2

Talk to Octagon

We are a technology center which has guaranteed our customers spare parts and technical support for over 30 years. As holders of an unequalled record of keeping systems running for 30 years, 24 hours a day, we are proud of the stability of our systems and the quality in technical support.

Learn more about

Join us

Be part of one of the most innovative companies in the world.

Total Quality

Give it a go on the road to Quality Management.

Technology Centre

Industry 4.0. Together with our customers we are creating a digital future.


Be our business partner and we will focus on the individual needs of your process.

Frequent questions

It is the best in cost benefit, not only because it is the fastest sensor but also because it has the unique feature of allowing you to start production during start-up in “fast” mode with increased measuring speed. Once stable production has been reached the rotation of the sensor returns to normal speed. In this way the volume of scrap decreases substantially with production changes, because the initial thickness corrections are made quickly and efficiently and in a few minutes the film reaches the desired tolerances.

The PMS-B is the best-selling sensor and in 90% of cases it does not mark the film.
For critical, very thin or tacky film we specify the VenPad sensor (Patented) without contact.

Mechanically the PMS-B Sensor is the most robust on the market. Its maintenance is very simple, just keep the Sensor clean and lubricate the bearings and the end-of-rotation mechanics. Our system is fully protected preventing the paraffin present in the plastic resins from reaching the moving parts such as conveyor belt, cables plugs, etc.

This sensor is recommended for all types of film with the exception of film with barrier layer. Film with energy-conductive components needs to be analyzed in advance. For barrier film we specify the PMS-FF Sensor.

For excellent thickness measurement, the sensor requires a strong mechanical support.

Having been manufacturing oscillating sensors for over 20 years we got to know the reality of the plastic industry very well. So we have perfected our systems over the years that they can work 24 hours a day without any stop seven days a week. Our system has been developed to function in the most diverse environments or climatic conditions. We guarantee stability and continuity in the functioning of our systems. At Octagon we know how to connect technology with the necessary robustness required in the industrial environment.

Yes. You can purchase only the sensor and use it for online measurement.

Yes. Contact our sales manager:
Mr. Klaus Janzen

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Who we are.
What we do.

Welcome! We are Octagon, a world reference in technology for the plastic industry.

Meet Octagon!

Automatic Air Ring

Sensor de Espessura PMS-B - Octagon Blown Film Control

Thickness Sensor



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Width Measurement

dosador gds eco

Gravimetric Dosing

produtos especiais

Special Products

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controle automatico largura

Automatic Width Control

upgrade maquinas

Upgrade of Blown Film Extruders and Co-Extruders

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Take advantage of all the benefits of the PMS-B Sensor. Acquire it for your

Octagon measuring equipment: We have been leaders in thickness profile control and measurement for over 30 years.

Octagon Blown Film Control GmbH:

Nuernberger Straße 119 D-97076 Wuerzburg, Germany.
Telephone +49 931 27 96 70 Fax +49 931 27 96 799