Spark Tester Description A Spark Tester is equipped behind the extruder and in from of the capstan. When producing wires pass through this electrode test-trough, this Spark Tester will force high voltage upon specimen to detect the bad products. View More Details OMEYA - Spark Tester Technical File (1.2 MB) OMEYA - E90+50 Extrusion Line + Spark Tester Technical File (8.2 MB)