Expert Talks

HBK Expert Talks

HBK Expert Talk is the science talk show around metrological questions. Find the growing collection of episodes on this page.

How to find the right accelerometer to match your needs!

Feeling overwhelmed by all the different types of existing accelerometers? This episode of Expert Talk will guide you to find the right transducer easily.

In this episode of HBK Expert Talk you will learn, among other things..

  • What to consider when Choosing an accelerometer
  • What is accelerometer’s frequency range, and the physics behind that defines it
  • The importance of accelerometer’s sensitivity, and how to choose the right one
  • Mass-loading, temperature range, and other parameters are briefly discussed

What is the correct sample rate? What is the best filter?

In this HBK Expert Talk episode, you will learn:

About sample rates:

  • When is the Shannon-Nyquist sampling theorem helpful and when can it be misleading?
  • Aliasing – a good-looking measurement signal delivers a false sense of security, leading to erroneous interpretations.
  • And how do I recognize undersampling?

About filters:

  • Cut-off frequency, passband, and stopband
  • Strengths and weaknesses of Bessel and Butterworth filters
  • Filter during the measurement or post-process?

Measuring Is Worthless Without Calibration!

This episode of HBK Expert Talk is about a topic that is often underestimated and yet so fundamentally important: calibration. Without proper calibration, precise and correct measurement is not possible.

Our calibration expert and academy trainer Thomas Hesse explains the basics of this essential topic with numerous practical examples.

In this episode of HBK Expert Talk you will learn…
  • When did the calibration exist and where did it originate from?
  • What does calibration mean and what does a calibration look like?
  • Different calibration levels and how a calibration pyramid is structured?

What Effects Earth and Mass Have on the Quality of Your Measurement Results

This episode of the HBK Expert Talk is about the separation of earth and mass. The exact differentiation of earth and mass has important effects on the quality of your measurement results. Why this is so, and which calculations you should make, is explained to you by HBK Academy trainer Patrik Ott.

In this episode of HBK Expert Talk you will learn…
  • What the differences are between earth and ground
  • Why an “ideal technological setup” only exists in theory
  • What you should NEVER do under ANY circumstances during your measurements

How Can You Avoid Electromagnetic Interference When Measuring With Strain Gauges?

Have you always wanted to know what is really important when handling strain gages? And how to work with electromagnetic interference? Then learn the best tips & tricks first hand. In our new, innovative format “HBK Expert Talk” Patrik Ott, trainer of the HBK Academy, will provide you with practical tips & tricks in dealing with strain gauges.

In this episode of HBK Expert Talk you will learn…
  • About a fundamental topic of error prevention when measuring with strain gages.
  • About the correct grounding of the measurement amplifier and the component.
  • About EMC & what is necessary for low-noise strain measurement.

How useful is a multi-range torque transducer?

In this Expert Talk, we will look at the principle of a multi-range torque transducer. How does it work and what are the advantages for the user?

To improve the quality of torque measurements, a multi-range transducer is often praised. Is it really the solution or just a marketing gimmick?

In this video, Kerstin Peikert and Thomas Hesse show you how a real multi-range transducer should be designed and how it is actually realized. Together we explore the aspects for an optimal measurement result and learn about the physical limits.

How to build a strain gauge based transducer?

You want to develop your transducer yourself or improve the characteristics of your transducer? Perhaps we can give you a jump start on what you should look out for when selecting strain gauges. Have a look at our expert talk with Angela Bäumel and Dr. Henrik Brutlach and learn a little more about compensating for temperature influences and creep of transducers.

Torque Transducers for Optimizing Electrical Power Trains.

Vehicle power train systems are changing fundamentally. From the combustion engine to the electric drive. Is the classic measuring tool torque transducer still suitable to master the new tasks? Our torque experts will show you the new tasks and explain whether or what will change now.

Optimal selection of strain gauge based force transducers.

Every force measurement is different. With the wrong selection of the force transducer it is possible, that completely wrong measurement results are obtained. Our force experts define the most important questions for selection and also give you the answers to them. You can look forward to a guide on selection criteria for force transducers.

Hygenic weighing and state of the art weighing in production.

Do you also want to weigh faster, more accurately and more conveniently with your production line? Do you want maintenance to be easy and even certified hygienic? Thomas Langer and Henrik Brutlach will show you in our expert talk what the next step could look like for you.

Read and interpret technical data correctly.

Are all the measurement properties of a measuring device also included in a technical documentation? Our expert Thomas Hesse, explain what you should pay attention to when reading a data sheet.

In this video you will get to know:

– The definition of the accuracy class
– The characteristic value and its tolerance
– The temperature influences on the sensor
– The nonlinearity
– The relative reversal error
– The repeatability
– The creep