Non-Contact Position Sensors Application in Geotechnical

Engineering

Non-Contact Position Sensors –Magnetic Technologies

•MagneticStrictive

•Magento Resistive

•Hall Effect

Magneto-strictive Sensor

Specifications of MTS Magnetostrictive Sensor Assembly

Anisotropic Magneto Resistive Technology

Characteristics Hall GMR PSSM1

Cost2 Moderate4 High Low

Size ~mm ~mm ~mm

Signal sensitivity 0.01 mV/Oe/V 1mV/Oe/V 20 mV/Oe

Temperature Stability

Poor Acceptable Good

Input Power ~mW ~mw 0

Dynamic Range 1-103Oe 10-3-10Oe 10-3-103Oe

Magnetic Sensor Technologies