A Set-Up of 7 Laser Triangulation Sensors and a Draw-Wire Sensor for Measuring Relative Displacement of a Piston Rod Mechanical Lead-Through Transmission in an Offshore Wave Energy Converter on the Ocean Floor

Figure 14

(a) Rectangular plate for mounting sensors, (b) 3 threaded holes for M10-bolts and 2 slots for guide pins in a rectangular plate, (c) M4-bolts with Nord-Lock washers for fastening sensors, (d) 6 sensors visibly mounted to the rectangular plates, with the 7th sensor mounted to the back of the right plate, (e) rectangular plates with sensors in position for attachment of circular sheave, (f) sensor set-up rig enabling fixed relative sensor positions, (g) sensor set-up rig mounted underneath the capsule top plate with the mechanical lead-through in the centre, (h) same as 14 g but viewed from underneath, (i) complete set-up with sensors connected to the data acquisition system, and (j) final assembly of the top plate to the capsule with the piston rod sliding through the seal housing and the sensor set-up rig closing in on its final position inside the WEC.