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testing

Testing Programs

Anyone can claim to be the best.At Bergquist,we can prove it! Our commitment to testingbefore,during and after production are among the reasons why Bergquist HeatSeal membrane switches are known throughout the world for their high reliability.While PSA switches are adequate for some applications,engineers cannot always identifywhat the end use environmental conditions will be.Bergquist HeatSeal switches are designed, manufactured and tested to hold up in the toughest environments imaginable. Bergquist testing includes:
MATERIALS SWITCH ACTUATION ELECTRICAL Bergquist lab techniciansuse the latest technology and equipment to test materials before and after manufacturing to main- tain quality control. Material from suppliers is checked regularly to identify any changes that may affect the switches. In addition, TGA(Thermo Gravimetric Analysis)equipment can be used to identify the exact “fingerprint” of a material.Other equipment is used tomeasure the adhesion between switch layers, and to simulate environmental conditions (see HeatSeal testing, pages 5-8). Specialized devices operateswitches through millions of actu- ations to test reliability.Other testing conducted inthe Bergquist laboratory includes switch functional performance testing, high temperature humidi- ty testing, and low temperature testing on switch packages. Acustom software programlogs the electrical resistance of each key on every switch manu- factured. This information is stored in a database for each cus- tomer. Abar code on each switch can be scanned to call up detailed switch information. 4