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Significance and Use
3.1 The force and displacement values when converted to a slope are useful in quantifying the differences in tactile response among membrane switches.
3.2 Specified resistance is useful to manufacturers and users when designing membrane switch interface circuitry.
3.3 Actuation force and contact force are useful to manufacturers and users in determining the suitability, reference and aesthetics of a membrane switch in a given application.
3.4 The tendency of a switch to make or break electrical contact at unexpected moments during closure or release can be a sign of a poor design. The degree of teasing can range from a simple annoyance to a failure of critical control process.
3.5 The amount of switch sensitivity or teasing can also be a result of poor surface conductivity that will prevent an electrical event even when switch poles are in partial contact.
1.1 This test method covers the measurement of force displacement characteristics of a membrane switch.
1.1.1 This test method replaces Test Method (Tactile Ratio). Tactile Actuating Slope Angle and Tactile Recovery Slope Angle better represent the characterization of tactile sensation, previously called “Tactile Ratio” in Test Method F1570.
1.1.2 This test method replaces Test Method (Travel).
1.1.3 This test method replaces Test Method (Actuation and Contact Force).
1.1.4 This test method replaces Test Method (Switch Sensitivity).
1.2 Force displacement hysterisis loop curve can be used in the determination of Actuation Force, Displacement, Contact Force, Return Force, and Tactile Actuating Slope Angle and Tactile Recovery Slope Angle.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ICS Number Code 29.120.40 (Switches)
UNSPSC Code 39122200(Electrical switches and accessories)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM F2592-16, Standard Test Method for Measuring the Force-Displacement of a Membrane Switch, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top