Product No.3023
Posted under: 
Heave Sensor / Hook Position Sensor: The vertical motion of floating vessels due to sea movements interface with the accurate measurement of vertical drillpipe motion in relation to the borehole. A cable from the heave sensor to the riser, Or to the rig’s heave compensator,Causes a wheel to rotate as the drilling vessel rises and falls.Power:8VDC,Output:pulses 250 pulses/tune. Measure Range:0-40 meters.