Help me Spec the right System

[KKruse4190]

I have been tasked with buying a measurement system for a dynamic force study my company would like to conduct. I need to create a force time curve with a sample rate around 2KHz, This is very far out of my expertise and I don't have enough time to learn hence why I am posting on this page. 

I am hoping to use this ICP force sensor (https://www.pcb.com/products?m=200C20). I know I will likely need a signal conditioner and believe this will work (https://www.pcb.com/products?m=410C01). As far as a DAQ I have reasoned a NI 9218 would work with the other hardware chosen. I know I will need a power supply as well. 

I am looking for feedback to see if I am totally off and see if there is anything I may have missed.

Thanks!

[mcduff]

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@KKruse4190 wrote:

I have been tasked with buying a measurement system for a dynamic force study my company would like to conduct. I need to create a force time curve with a sample rate around 2KHz, This is very far out of my expertise and I don't have enough time to learn hence why I am posting on this page. 

I am hoping to use this ICP force sensor (https://www.pcb.com/products?m=200C20). I know I will likely need a signal conditioner and believe this will work (https://www.pcb.com/products?m=410C01). As far as a DAQ I have reasoned a NI 9218 would work with the other hardware chosen. I know I will need a power supply as well. 

I am looking for feedback to see if I am totally off and see if there is anything I may have missed.

Thanks!

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Just guessing here as I don't know your whole application.

1. The force sensor is ICP; that means it takes IEPE excitation. The digitizer you are looking at (9218), has IEPE excitation built in, so you may not need a signal conditioner. Check with NI that it meets the sensors' specs.
2. The signal conditioner you are looking at may have gain, I did not look closely, that would be an advantage as the digitizer does not have gain.
3. The 9218 would need a chassis, there are single slot chassis available like the cDAQ-9171.
4. If you use the PCB signal conditioner, you may be able to use another cDAQ, as the PCB signal conditioner just outputs 0 - 10 V. So you just need a digitizer with this range. Suggest a 24 bit one.

mcduff

[Henrik_Volkers]

How many  channels do you need?

How long will the cables be?

I would suggest something like the USB-4432 , nice box, supplied by USB (from Labtop) , have one running here.

BUT  even if you are (currently) only looking for frequencies below 100Hz ..  the low IEPE supply current can limit the cables length from your sensor to the DAQ. (function of supply current , cable capacity and needed signal slew rate )