Summary of Specifications:
1-MULTIPLE SWITCH TESTER, MODEL MST 700: Fully automated tool designed to verify the proper operation of Loadswitches, Flashers, and Transfer Relays that are used in traffic signal installations conforming with NEMA or CalTrans specifications.
2- Clamp-On Ground Resistance Testers , MODEL 3711 The Clamp-on Ground Resistance Tester Model 3711 measures ground rod and small grid resistance through any season, without the use of auxiliary ground rods. Clamp-on Ground Resistance Testers are used in multi-grounded systems without disconnecting the ground under test. The Model 3711 simply clamps around the ground conductor or rod and measures the resistance to ground. By performing measurements on intact ground systems, the user also verifies the quality of the grounding connections and bonds. Resistance and continuity of grounding loops around pads and buildings may also be measured.
1- Rack and Shelf Detector Tester Model 330: Bench top tester designed to benefit technicians by presenting three different levels of inductance change to inductive loop detectors based on the NEMA TS1, NEMA TS2, and FHWA/CalTrans 1989 standards. The tester can test 1 and 2 channel shelf-type detectors as well as 2 and 4 channel rack-type detectors. The CALTRANS/FHWA Model 222 and Model 224 are supported as well.
