Sensor stability crucial to monitoring vertical seafloor movements in subduction zones
Aanderaa started to deliver stable and accurate pressure based water level and wave/tide systems (WLR/WTR 4/5 and 7/8) in 1975. These instruments used quartz pressure sensing elements.
In 2006 a new series of compact Pressure/Wave/Tide sensors based on silicon sensing elements using a piezoresistive measuring principle were introduced. These sensors have demonstrated excellent accuracy, resolution and stability. Also they consume little energy, can handle shock and are able to withstand 50% overpressure without damage and need for recalibration. This application note is the second in a series of several that describes projects where these sensors have been used. Read it here
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