Calibration of position Sensors
Calibration of position Sensors
(OP)
Hi
Does anybody knows of an instrument that I could use to calibrate a linear position sensor?
Does anybody knows of an instrument that I could use to calibrate a linear position sensor?





RE: Calibration of position Sensors
for my 2 to 20 inch lvdts, i use micrometer standards (when available). An adjustable guage block and a dial caliper most of the time.
RE: Calibration of position Sensors
RE: Calibration of position Sensors
I'm planning on using two different types of sensors.
An LVDT range 30mm
A Potentiometer 25mm
Both work with DC Voltage
The total length that I want to measure is 0.5 in.
I don't have any experience calibrating sensors.
When you buy them do they come calibrated for a specific input voltage or do I have to do this myself?
I was thinking of using a micrometer or caliper to determiner the actual linearity error and the calibration curve.
My goal is to be able to create an equation to use as input for a controller program.
An example of the equation would be like:
For a given excitation voltage V_in
Delta_X = a1+a0(Voltage)
Where: delta_x is displacement
a1 and a0 are linearity constants
Voltage is output voltage
Could you recommend some website or reference site where I could get more information
Any advice is welcome
Caslo,
RE: Calibration of position Sensors
if you select tech manuals, then select E308 will be a dislay that gives detail.
you'll notice the generic cal procedure doesnot give full scale travel as a given, but is user defined. for my use i want my display to be in inches. but if it is in a control loop, the actual bump to bump travel is set for 0 to 100%
adding to my previous post, I have used a standard nut as calibration block, and my calipers to determine what actual displacement was.
to determine your actual lineartiy, you can use incremental shims and record output. I think you'll find the linearity of most off the shelf sensors better than you're ability to measure
RE: Calibration of position Sensors
Don
Kansas City