The model HSDAD directional acoustic detector features a new concept in fault locating that utilizes the speed of sound to show direction to the fault (thump) from where the operator is standing. The dual channel system is designed for primary cable fault location and can be used with any thumper. The sound of the “thump” emitting from the fault is detected at different times by two microphones placed apart on the cable route.
One microphone is used until the sound of the thump is heard. Two microphones are then placed apart over the route of the cable. The first microphone is used to pick up the sound of the thump and triggers the electronics into action, but shuts down the second microphone’s input. The LED indicator displays the direction of the fault. As the microphones are moved down the route of the cable, the LED indicator responds in the same direction until the fault is passed. At this point the trailing microphone will respond first, producing a reverse direction on the LED indicator. The operator knows he has passed the fault point and must reverse his search.
The key to the superior performance of the Hipotronics HSDAD is the new Ballistic Impulse electronics, which senses the electromagnetic pulse as it proceeds down the cable and signals its passage on a LED display. An antenna above the ground detects the thump, which is amplified and displayed on the LED display each time the thumper pulse goes by the operator on its way to the fault. Detection is unidirectional -- the thump can be followed by holding the detector outside a vehicle window or by an operatorwalking the cable route. General location of the fault can be determined quickly since most of the thumper’s output
- Three measurement modes direction to fault (with centering), fault depth indication and time-based distance to fault
- Ballistic Impulse LED display
- Includes earth probe and ground contact microphones
- Dual Channel Detector
- Foam-lined carrying case
- Powered by two standard 9 volt batteries
Applications
These devices are generally used by:
- Electrical Utilities
- Test Companies
- Petrochemical Facilities
- Facility Maintenance
- Simple Operation - only a minimal amount of user training is needed to locate faults
- Ballistic Impulse LED - display is simple to read even in dark lighting
- Locates Faults Quickly - faults are located with a minimal amount of time and effort
- Smart Device - is able to discriminate between audible “thumps” and background currents
- Flexible Measurement - modes simplify fault location
- Two Different Microphones - allow fault location under any surface
