Cable tension measurement

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1

Hello Lynkoa Team


I wonder about the tools needed to measure the tension of a cable.
Let me explain the situation to you. We have to extract "bulky" objects or objects carried by the sea (debris, vehicles, boats, etc.) from the ocean. These objects can be heavy or less heavy but we will still have to make a report on each lifting of the crane, and for this, we are looking for the right + dynamometer. 


Do you think that this category of dynamometer that we have stopped on can be perfect for this application? 
http://www.sensel-measurement.fr/fr/38-dynamometre-electronique

Thank you very much, I look forward to your feedback

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2

Hello

I would go more towards a solution integrated into the crane. Here are some examples:

  1. http://www.intermercatofrance.fr/pesage-embarque-industriel-grue-pelle-engin.php
  2. http://www.ascorel.com/-Controle-d-etat-de-charge-.html

 

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3

in any case to impress

by tolerance and operating range

in addition to wireless

it's the best of the best ;-)

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4

Hello

This type of device generally works best in an upright position. In addition, it will have to be placed at the end of the cable, so in the water in your case. Not sure if the device is compatible.

For this kind of thing, I think I'll go for a solution to measure the motor torque at the crane cable winding drum. Knowing the diameter of the drum, it is then easy to deduce the associated load. This is easier to protect and the charge value is also permanently accessible.

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5

Hello

How will the operations be carried out? from the ground with a crane? at sea on a ship with a crane? with a winch and a gantry? The problem is not the same...

What do you want to measure? The weight of the recovered objects? Or the total load on your lifting device?

Do not neglect the weight of the cable (what is the working depth?), the Archimedean thrust, the swell, the dynamic effects...

There are different means of measuring cable tension. Series assembly as you propose and parallel assembly (with 3 rollers on a cable, it is easy to measure the different components and deduce the voltage. The cable slides in it, no need to change your lifting equipment or put the measuring element in the water...