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Displacement / Measurement Sensors

These Sensors can be used to measure distances and heights. A wide variety of models is available, including Laser Sensors, LED Sensors, Ultrasonic Sensors, Contact Sensors, Eddy Current Sensors, and more.

Overview Features
Principles Classifications
Engineering Data Further Information

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Primary Contents

Explanation of terms

Resolution

This is the width, expressed in terms of the distance, of the fluctuation in the linear output when the measured object is still.

Linearity

Error with respect to ideal straight line of linear output Normally the percentage of the measurement range (full scale:FS), expressed in the format "1%".

Temperature drift

The amount of variation of linear output with respect to changes in the ambient temperature.
Normally the percentage of the measurement range (full scale:FS), expressed in the format []%FS/°C.

Example: 0.03%FS/°C (FS = 20 mm)

Response time

Linear output when the displacement and width of the object are changed to steps.
In analog output, the time required for 10% to 90% change is expressed in terms of the "response time".

Response time and resolution

In general the displacement, response time, and resolution are correlated as shown in the following diagram.

When you wish to precisely measure displacement, select a slower response time setting. (This reduces responsiveness.)

When you need a fast response, select a faster response time setting. (This reduces the resolution.)