Three Sensor Mounting Details for Better Repeatability

Repeatability in sensors often comes down to mounting. If the sensor moves between readings, your data is noise. Here are three details that make a big difference.

First: Face-mount on a flat, machined surface. Never mount a sensor to a painted or uneven surface. A spot face or a ground pad gives the sensor a stable reference. If the surface is not flat, the housing distorts and the sensing element shifts.

Second: Use a dowel pin or a machined shoulder for location. Screws are for clamping, not alignment. A precision dowel pin locates the sensor consistently, so removing and reinstalling it gives the same position every time.

Third: Torque the fasteners to spec. Under-tightening lets the sensor vibrate; over-tightening distorts the housing. Use a calibrated torque wrench and a thread locker if the application has vibration. This keeps the preload consistent.

These details take minutes to implement but save hours of calibration. For high-accuracy systems, treat the sensor mount like a precision fixture.

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