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SCA100T Series VTI Technologies Oy Subject to changes 1/18 www.vti.fi Doc.Nr. 8261800 Rev.A

Inclinometer SCA100T Series - 23067 Data Sheet

THE SCA100T DUAL AXIS INCLINOMETER SERIES

The SCA100T Series is a 3D-MEMS-based dual axis inclinometer family that provides instrumentation grade performance for leveling applications. The measuring axes of the sensing elements are parallel to the mounting plane and orthogonal to each other. Low temperature dependency, high resolution and low noise, together a with robust sensing element design, make the SCA100T the ideal choice for leveling instruments. The VTI inclinometers are insensitive to vibration, due to their over damped sensing elements, and can withstand mechanical shocks of up to 20000 g.

Features

Dual axis inclination measurement (X and Y) Digital SPI inclination and temperature output Measuring ranges ±30° SCA100T-D01 and ± 90° SCA100T-D02 Comprehensive failure detection features o True self test by deflecting the sensing elements’ proof mass by electrostatic force. 0.0025° resolution (10 Hz BW, analog output) Sensing element controlled over damped frequency response (-3dB 18Hz) o Continuous sensing element interconnection failure check. Robust design, high shock durability (20000g) o Continuous memory parity check. High stability over temperature and time RoHS compliant Single +5 V supply Compatible with Pb-free reflow solder process Ratiometric analog voltage outputs

Applications

Platform leveling and stabilization Leveling instruments 360° vertical orientation measurement Construction levels
Sensing element 1 Signal conditioningand filtering A/D conversion Self test 1 EEPROMcalibrationmemory TemperatureSensor 9 ST_210 ST_1 12 VDD 6 GND 11 OUT_1 5 OUT_21 SCK3 MISO4 MOSI7 CSB Self test 2 SPI interface Figure 1.
Sensing element 2 Functional block diagram
Signal conditioningand filtering