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GENERAL TEST PROBE

2016-08-23 11:04:24

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I/ DESIGN OF TEST PROBE Sping-loaded Test Probes (GKS) normally consist of 3 individual parts.

I/ DESIGN OF TEST PROBE

Sping-loaded Test Probes (GKS) normally consist of 3 individual parts.

  • The Plunger: with the contacting zone is available in a large choice of tip-styles. It must provide the smallest possible contact resistance between the Test Probe and test point, to ensure that measurement results are not distorted.
  • The Spring: provides the necessary contact pressure, and this even after several hundred thousand strokes (testing cycles).
  • The Barrel: accomodates the plunger and the spring. The actual measurement signal flows via the barrel to the Receptacle.

The Receptacle (KS) provides easy interchange of the Test Probe during maintenance and servicing of the Test Fixture. The exchange can be carried out fast and without any wiring work.

 

II/ RECOMMENDED WORKING STROKE AND MAXIMUM STROKE

When choosing a Test Probe for a certain application, the required stroke of the Test Probe is also important.

In the home position, the plunger of the Test Probe is not activated but still has a certain pre-load, the assembly beading then acts as a stop to prevent the plunger coming out of the barrel. The rated spring force is reached when the plunger is activated to the working stroke postion. Depending on the series, this lies between 66% and 80% of the maximum stroke.


III/ COLLAR HEIGHT AND INSTALLATION HEIGHT

The Installation Height is the distance between the tip of the plunger of the non-activated Test Probe and the surface of the Probe-Plate.

To regulate the Installation Height the Test Probes are normally available with various difference Collar Heights. Apart from this, in the case of certain series Spacers are available, which offer further flexibility of the Installation Height. Test probes which have the end designation “00” have no collar on the barrel. In the case of these Test Probes, the Installation Height is determined by the Receptacle.

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