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Accelerometer Cable Cross-Section Area

06/25/2009 5:12 AM

Hello everyone,

I have a question regarding the cross-sectional area of accelerometer cables. Does anyone know the average cable cross-section area of single-axis and tri-axis accelerometers? I need to know these values to roughly calculate the size of the hole I will have to open to a side panel of my structure for the cables of the accelerometers I will place inside the structure.

In other words; I have an enclosed test specimen, there will be accelerometers inside. I want to find the hole size that I'll need for the cables to come out, and for that I want to learn the average cable cross-sectional area.

Thanks in advance.

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Guru
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#1

Re: Accelerometer cable cross-section area

06/25/2009 5:50 AM

Knowing the "average" won't help. Could be anything from 2-3mm to 10-15mm, depending on application, though 4-6mm would be more common.

Best way to go is select your accelerometers & work back from that. If they're pre-wired, you've got your answer. If not, you can chose your own cable (as long as it meets the supplier's recommendations re. current carrying & screening).

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#2
In reply to #1

Re: Accelerometer cable cross-section area

06/25/2009 6:30 AM

Thanks for the answer. Are these values the diameters in milimeters, or are they areas in milimeter square? I'm asking because I don't know anything about the magnitude of the values either (and a 10mm diameter cable seemed thick to me for signal transmission, might be my lack of knowledge on accelerometers)

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Guru
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#3
In reply to #2

Re: Accelerometer cable cross-section area

06/25/2009 7:38 AM

I've given the OD (in mm) of a complete insulated cable. The larger diameters I cited would only be appropriate where there was need for protection against physical damage.

The actual wire csa needed for the conductors is probably only about 0.1 or 0.2mm2 - but as I said, you should check with the manufacturer or supplier of the particular devices you're going to use.

Here's one I came across from Sherborne:

The block is 30mm x 30mm x 9.5mm, so you can roughly scale the cable OD.

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#4

Re: Accelerometer Cable Cross-Section Area

06/25/2009 10:16 AM

Yes, I'm expecting to receive an answer from the facility that has the accelerometers soon enough; I urgently needed an estimation on what magnitude it could be. Thank you a lot for the help! :)

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