1278516991595a1267106724867-brochure-o-wartsila-solutions-2015

OIL SEPARATION• Wärtsilä iPhase ®The Wärtsilä iPhase ® profiler measures the oil-water interface,providing accurate measurements of water conductivity and therebythe oil in water profile inside hydrocarbon separators.Several independent sensors are located above each other in orderto measure a vertical profile of the separator contents. Each sensormeasures the bulk properties of the surrounding fluid. The measurementis conducted without electrodes and over a large volume which makes itless sensitive to deposits.The Wärtsilä iPhase ® electronic module is located on thetop of the separator vessel and is connected to the WärtsiläiPhase ® Measurement Rod, located inside the vessel.It performs all calculations onboard and can directly beaccessed by the plant control system via MODBUS RTU or4–20 mA signaling.Measurement principleThe Wärtsilä iPhase ® profiler measures the electricalconductivity of the water/oil mixture surrounding eachsensor. Dispersed oil droplets are non-conductivecompared to the surrounding water. The overall conductivitywill therefore decrease with increasing concentration ofoil. The Wärtsilä iPhase ® sensors utilize the conductivitydifference to provide the oil in water profile.The conductivity is measured by setting up an electricfield and measure the current flowing. The electric field is aninduced field and is therefore very tolerant to deposits.Features• z Inductive measurement principle• z Tolerant to deposits• z High accuracy oil/water interface determination• z Separator water profiling• z Detection of sand build-up• z Integrated temperature sensor• z Intrinsically safe electronics• z No active components inside vessel• z Control system interface MODBUS RTU (RS485)• z 4–20 mA for interface signaling• z Certifications: ATEX Ex ia IIB T4, IECEX, EMC, UL• z No export restrictions119