Signal Conditioning

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Inaccurate Impact Reading from ICP Force Sensor

Hello,

 

I am very new to LabView and have inherited an SCXI-1001 chassis with an 1303 module connected to an 1102. I am trying to run an ICP Force Sensor from PCB through their signal conditioner to a simple Analog Input Voltage on the DAQ Assistant. It seems to behave properly with slower inputs (such as pressing on the sensor with a thumb), however, any sort of fast impulse is extremely inaccurate (whacking the sensor with a hammer produces the equivalent of a 5-8lb force). We have tried changing our sampling rate to no avail. Most of the tutorials/examples I have seen online seem overly complicated for what we are trying to do, but perhaps I am just too inexperienced with LabView. 

 

I will try to supply as much documentation as I can. 

 

Sensor: 

 

https://www.pcb.com/contentstore/MktgContent/LinkedDocuments/Force-Torque/TM-FRC-208C_Lowres.pdf

 

Signal Conditioner: 

 

https://www.pcb.com/contentStore/docs/pcb_corporate/electronics/products/specsheets/480c02_p.pdf

 

I attached a picture of my setup for the Analog Input Voltage, the smooth rise is from my thumb and registered around 18lbs (1mV = 1lb) and the small sharp peak is from a firm strike with a hammer (only registering at  5lbs). 

 

Any thoughts as to why this may be happening would be greatly appreciated. 

 

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