Advanced Sensor Diagnostics

Assessing Current & Future Performance

Replacing LPRM sensors is a costly proposition. And, because sensor assessments are subjective in nature with great variation in diagnostic methods, tools and interpretation of data, sensors are often replaced unnecessarily. GE addresses this issue with specialized diagnostic equipment, procedures and database analysis to more accurately assess both present and future LPRM performance.

Features & Benefits

Offered as part of the LPRM purchase contract, GE’s diagnostic service is performed twice a year. The procedure requires less than five minutes per sensor during normal plant operation. We can apply the same approach to competitive LPRMs and also can assess SRMs and IRMs.

The analysis includes:

  • Detector current versus voltage (IV) curve and IV curve shape
  • Calibration current versus detector exposure from OD1 data (end of life prediction)
  • Time Domain Reflectometer (TDR) measurement

All data recorded is stored in memory. During the recording of data, a CRT display gives preliminary indication of the condition of the sensor. Data is then fed into our plant computer (via modem, if necessary) and a detailed analysis is performed. Such information not only serves to monitor lifetime performance, but also assists in making the most economic sensor replacement decisions.

GE’s advanced sensor diagnostics capabilities are designed to help you:

  • Interpret and diagnose accurately present and predicted LPRM performance
  • Reduce costs associated with replacing sensors prematurely
  • Isolate and correct faults in detector, cable and/or connectors
  • Plan to phase new sensors in more cost-effectively

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