Definition(s)
Pit Level Indicator
Device that constantly monitors the level of drilling fluid in the pits during operations incorporates float devices with sensors that report levels to a recording and alarm device (the pit volume recorder) placed near the driller’s position on the rig floor, the alarm is set to sound if the pit level goes too high or too low.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards