Tuesday, 15 November 2016


FIELD TESTING OF ULTRASOUND TRANSDUCERS


  • The repair facility for conquest imaging,performs several tests that are difficult or impossible to do when in the field.
  • This includes things such as a computer-generated platform of tests that electronically measure element sensitivity-cable capacitance and overall performance.
  • There are several ways to field test a transducer.

VISUAL AND MECHANICAL INSPECTION

  • Begin with the lens and check for nicks,cuts or gaps between the nosepiece and lens or lens swelling.

LENS DAMAGE

LENS SWELLING

  • While watching the image,holds the scan head by strain relief and look for drop outs or noise being generated in the image.
  • NOISE GENERATED IMAGE


  • Moving down to the cable,check for any nicks cuts along the entire length of the cable.
CABLE CUT

  • Inspect the connector for any broken or bent pins and remove from service immediately any probes that have connector damage.
  • A bend or broken pin can damages the connector board on a system,it will damage the next probe that is plugged into that port.

CONNECTOR DAMAGE

ELECTRICAL SAFETY

  • By preparing a water bath with a saline solution.
  • By setting up leakage meter,
  • Energizing the probe with the ultrasound system
  • Inserting the nosepiece in the solution and then completing the circuit by inserting leakage probe into the solution and then lifting the ground.
  • This way you can test for transducer leakage current.
ELECTRICAL LEAKAGE TEST




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