Equipment Rentals

Neptune Differential Temperature Sensors

Neptune Acoustic Leak Detection
  • Sensors can be diver held or ROV mounted
  • 2000m depth rating
  • Calibrated temperature range: -2ºC to 50ºC
  • Accuracy: ±1ºC
  • Temperature Gradient range: ±2deg/second
  • The system is quickly mobilised for offshore operations worldwide
  • Graphical display and data logging
  • Compatible with Neptune’s two channel leak detection system to allow simultaneous operation with other leak detection sensor types
  • N/A

Neptune Oceanographics provide field proven pipeline leak detection systems to work with a variety of subsea inspection techniques. These include systems for ROV, AUV, PIG as well as diver held solutions for shallow waters.

Neptune Differential Temperature Sensors
Under some circumstances such as with water injection flow lines and high pressure control systems, leaks can be identified using temperature detection of the difference between the surrounding seawater and the water leaking from the flowline. The flowline water temperature is normally above ambient seawater temperature due to the high pressure pumping required. Neptune Oceanographics has developed a differential temperature technique that can detect very small temperature changes. The thermal leak detector comprises a fast, high precision thermistor connected through the Neptune Oceanographics leak detection system to the ROV umbilical for onboard display and recording.

The thermal leak detection system is designed for use with the 2-channel leak detection system and can be used simultaneously with a fluorometer or acoustic sensor connected to the second channel. Data are displayed graphically and recorded on the onboard PC.

The 2 channel on-board PC displays the thermal imaging leak detection data as a colour time series plot in real time allowing the operator to easily see changes in signal that indicate the presence of a leak. The software also allows the user record data and set alarm levels.

TS021T Temperature PLD.PDF