Intelligent digital track circuit fault diagnostic professional manufacturer, the company also produces a variety of other rail equipment, stable performance, affordable, intelligent diagnostic digital track circuit failure welcome new and old customers call to discuss: 15163722205 multifunction tester, effective Quickly find 25HZ, 50HZ, frequency shift track circuit fault diagnosis, check the track circuit breaker, short-term and FSK signal train rails and other failures. Applicable to 25HZ / 50HZ, 97 type phase sensitive track circuit voltage, frequency shift current test phase-sensitive track circuit 97, a local test track and the track phase fault current (sensing) diagnostic judgment adjacent track surface polarity cross track circuit is open, open fault, determine the insulation condition track gauge rod judgment track circuit cable is good contact, for electrical service system provides a convenient means of measurement in terms of construction, range operations, and troubleshooting.