How To Test Esd Mat

Turn the mat test meter on.

How to test esd mat.

Connect the other probe to the furthest point on the mat s top surface. Digital multimeters use their own battery to power the display and they retain the measurement unlike analog multimeters that return to zero once there is no electrical current. This energy is a static buildup. As esd occurs in a microsecond you need to be able to retain the reading.

Connect one of its probes to the mat s metal grounding rivet or clip. This requires the use of a surface resistivity esd meter to perform both resistance top to top rtt and resistance to groundable point rtg tests. One is the air method and the other is the contact method. To test you would typically use a combo tester at the entrance to esd safe work areas.

The esd association standards primarily used for test lab qualification testing details rtt and rtg tests where the rtg test is to the mat s groundable snap. The test simulates the effect on an electronic component of a human discharging electrical energy onto it. There are two esd test methods. Clip one probe to the mat s metal snap or grounding point.

Esd can be transferred through the air or contact. Worksurfaces resistance measurement s. Connect the mat s grounding clip to the electrical ground connection. The testing therefore looks for a reading from the wrist strap system of less than 3 5 x 10 7 35 000 000 ohms and a reading from the foot grounder of less than 1 x 10 9 ohms 1 gigohm.

Poster with directions for using the desco combo tester is included with parts for assembly. The most common test of esd is called human body method. Turn the esd test meter on. The ansi esd association standard used in the united states to test that an esd mat is static dissipative is ansi esd s4 1.

You can use grounded metal conduit or a cold water pipe for an electrical ground.