K&C Testing Tips

On Vehicle Sensors

On-vehicle sensors such as damper (shock) pots and load cells are commonly used on racecars, and can be utilized in K&C testing too. In fact, the on-vehicle sensors are often the only thing you have to correlate data measured on-track with data measured on the K&C rig. With 26 extra analog channels available, Morse Measurements makes it easy to acquire the signal from your sensors directly into the K&C data acquisition system, which puts that information in the K&C test file with the rest of your K&C data. There are just a few things you need to do in advance to make this successful. First, build jumper cables to connect your sensors to the on-rig Deutsch connector. This connection provides excitation voltage and measures the output signal. Next, make sure all of your sensor output signals are amplified. The data acquisition system on the K&C rig can read +/-10 V, but it does not have the resolution to read unamplified, millivolt signals. Lastly, provide a calibration to relate the output voltage to the desired measurement, such as load or displacement. These may be a linear gain and offset, or you can provide a more complex relationship. Output data will be provided in the correct, calibrated engineering unit per the calibration you provide. If you discover a problem with the calibration later, all is not lost. The raw output voltage from the sensor is also provided in the K&C data files, so it’s easy to apply a new calibration, if required.

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