ULTRASONIC INTELLIGENT SENSORS 3D Vibration Monitor

1 ULTRASONIC INTELLIGENT SENSORSC lampOn Subsea3D Vibration MonitorDIGITAL SIGNAL PROCESSINGULTRASONIC INTELLIGENT SENSORSADVANTAGES On board processing and data storage Flexible and quick installationand retrieval 3 axis broad range measure-mentsBACKGROUNDIn order to minimize risk of fatigue failureof pipes and other structural components,a subsea condition monitoring or inspec-tion tool may be required to keep pro-duction at a safe level. The clampon DSPV ibration Monitor 3D allows for accuratemonitoring of Vibration subsea, both ontemporary or permanent basis. Typicalsources of Vibration include vortex indu-ced low frequency Vibration (VIV), flowinduced Vibration (FIV), flow inducedpulsation (FIP/FLIP), slugging and combination with advanced compu-ter simulations for flow and structuremodeling, subsea Vibration monitoringhas become a valuable tool to monitorthe state of subsea pipework and struc-tures.

2 In several cases the applicationhas enabled the operator to safelyincrease production as the measuredlevel of Vibration has been less thanconservative models PRINCIPLEThe clampon Subsea 3D Vibration Moni-tor is a flexible tool, designed for tempo-rary or permanent installation on an areaor pipe that should be monitored forvibration. The instrument takes use of3-axis accelerometers, so that any minoror major movement, at high or low fre-quency, will easily be detected andreported to the operator. Data can betransferred in real time, or stored locallyin the instrument for post-processingand term stand alone induced Vibration on spool INTELLIGENT SENSORSNORWAY: clampon AS, Vaagsgaten 10, NO-5160 Laksevaag, Bergen, Norway, Phone: +47 5594 8850, Fax: +47 5594 8855, e-mail: - USA: clampon , Inc., 15720 Park Row, Ste. 300 (77084), PO Box 219206 (77218-9206), Houston, TX, USA, Phone: +1 281 492 9805, Fax: +1 281 492 9810, e-mail: MONITORING (SHORT TERM).

3 Stand alone or wired to topside Battery and data logging option Easy installation and retrievalKEY SPECIFICATIONS Manner of operationReal-time measurement Measurement principle 3-axis MEMS accelerometer Design depth3048 m ( ft) Frequency range0 Hz to 1000Hz Sensitivity220 mV/g or 660 mV/g ADC resolution12 bits ( mg /LSB / mg /LSB) AntialiasingAnalogue low-pass filter and up to 16x digital oversampling Sampling frequencyConfigurable, up to 2000 Hz Noise density50 g/ Hz Acceleration range g or g (Measurement) Max sensitivity %/ C Internal Data storage 64 GB (maximum) TRL Level7 Data formatContinuous raw data from all axes in 16-bit wav formatAveraged FFT spectra with up to 800 lines of resolution and configurable upper and lower frequency limitsMagnetic fixture for Valve RELATIONSHIPFor more advanced monitoring of apipe section, it is often required to usemore than one instrument to measurethe phase relation between two or morelocations.

4 This will provide detailed in-formation of the movement/displace-ment of the section. To achieve this allthe instruments are time solutions for installation havebeen developed: For permanent moni-toring the instrument is normally boltedto the pipe or fixture. On temporary inspection type set-up the instrumentcan be installed in brackets containingpowerful neodymium permanent mag-nets, or by ROV Clamps. The optionsare many depending on depth, accessand MONITORING(30-YEAR DESIGN) Interface to control system Optional retrievable data logger Optional wireless communication Optional long term batteryMay 2016