Figure F14. Schematic diagram of tilt combo module. Tilt combo has four different sensors: tiltmeter, geophone, accelerometer, and thermometer digitizer. Geophone (GS-11D, OYO Geospace), accelerometer (JA-5H200, JAE), and some electrical boards are on one titanium housing; LILY tiltmeter (Applied Geomechanics) and thermometer stand-alone heat flow meter (SAHF) digitizer (Kaiyo Denshi Co., Ltd.) have individual titanium housings. All three housings are connected by an electrical cable and will be fixed to a sensor carrier for borehole installation. PCB = printed circuit board, A/D = analog to digital.
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