Jewell Instruments Lily Borehole Tiltmeter
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LILY

Jewell Instruments

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Features

  • Range (biaxial):
    • Self leveling range; ±10° adjustment range
    • Measurement range; ±330 µradian dynamic
  • Resolution: 5 nanoradians
  • Output: RS232, RS422, or both; full duplex
  • Operating temp: 17.6 to 185°F (-8 to 85°C)
  • 2 Megabytes of nonvolatile Flash Memory (64,000 samples)
  • Stainless steel housing

The Jewell Instruments Lily Borehole Tiltmeter is designed for volcanic and tectonic research and for monitoring of hydraulic fracturing and other subsurface processes in the oil and gas industry. LILY is the culmination of over 25 years of experience in the fields of instrumentation and geophysics by the engineers and scientists at Jewell Instruments. Its small diameter and high-pressure stainless steel housing give it ruggedness and versatility for demanding field projects.

The dual-axis tiltmeter senses angular movement in two orthogonal vertical planes using precision electrolytic tilt sensors. The digital electronics convert the tilt signals to an easily recorded RS232 and RS422 data stream consisting of tilt, azimuth, temperature, serial number and clock time. Data output in NMEA 0183 format is a standard feature.

The LILY tilt sensors can self-level on command through a range of ±10 degrees and have less than 5 nanoradians resolution over a dynamic range of ±330 microradians. The LILY incorporates an innovative new design that achieves high mechanical stability, necessary for stable long-term measurements.