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Self-recording accelerometer-tiltmeter
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Accelerometer
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Kyowa EI AS-100TA Max. ± 100 G 0.084 m/s2/digit |
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Tiltmeter
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Applied Geomechanics model 900 ± 25° 0.002376°/digit |
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Sampling
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16 bit at selectable from 100, 200, 500 Hz |
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Recording
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2 GB CF memory card 2 byte sample |
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Batteries
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Four Electrochem BCX85 3B76 lithium batteries (3.6 V, 30 AH each) |
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Power
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210 mA at 8 V supply when recording, 80 mA when standby |
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Housing
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SUS316 stainless steel |
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Dimensions
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600 mm length, 135 mm diameter |
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Weight
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46 kg in air, 31 kg in water |
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Borehole strainmeter
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Strain
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Three sets of transducers to measure strain in 0°, 120°, 240°; 2 V/mm sensitivity; one volumetric strain measurement |
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Temperature
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Inside strain sensor and telemetry sections |
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Sampling
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Simultaneously 32 bit 6 channels at 250 Hz; volumetric strain ~40 samples/s |
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Recording
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8 GB SD memory card ~2 byte sample with data compression |
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Power
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118 mA at 24 V supply on recording |
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Batteries
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Lithium batteries 3.6 V × 12 to maintain observation for 2 weeks |
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Dimensions
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Cylindrical maximum outer diameter 194 mm, length 4000 mm |
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Weight
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376 kg |
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Interface
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Top: flange; bottom: 3-1/2 inch EUE pin; connector (Seacon MINK-10-FCR) on top of telemetry section |
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Borehole seismometers
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CMG1T
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Recording
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None |
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Housing
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Titanium cylinder, Seacon MINK-10-FCR on top |
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Dimensions
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127 mm diameter, 1300 mm height |
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Weight
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~50 kg |
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CMG3T
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Recording
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None |
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Housing
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Titanium cylinder, Seacon MINK-10-FCR on top |
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Dimensions
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126 mm diameter, 1503 mm height |
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Weight
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~50 kg |
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Instrument carrier
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Purpose
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To hold accelerometer and seismometers, suspend strainmeter and tubings, and serving fluid/cement path down |
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Dimensions
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8439.2 mm length, effective diameter 8 inches |
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Weight
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486 kg |