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<br />Page 2 <br />•~ Total Seismometer Weight - 19.5 pounds <br />Average Density -.1.6 gm/ca (average soil density) <br />' Dimensions - ~ inch cube <br />Level Limit - 2 degrees <br />Temperature Range - -20° to +140°F <br />between stops - <br />Specifications given at 75°F <br /> 2 - Galvanometers: <br /> Natural Frequency - 200 Hz <br /> D.C, Coil Resistance - 60 ohms <br />' Damping Resistance - 200 ohms <br /> Undamped D.C. Senaitivitp with 5.4" <br /> Optical Arm <br />Thermal Response ~ - 140 microampere/ia. <br />-0.096/•F <br /> 3 - Recordor: <br /> <br /> Camera Speed - 100 mm/sec. <br />• Capacity - ~ minutes <br /> 150 feet <br />' Paper - 70 mm (2.75 in) standard photo- <br />' graphic or direct write paper <br /> 4 - Time: <br /> Time mark interval - 0.02 snc. <br />' Time mark accuracy - 0.5% <br /> $ - Seismograph: <br />' <br /> Frequency Range - 2 to 200 Hz Plat with velocity <br /> Gain - stepped 0.2, 1, 5, 20 in/in/sac, <br /> Internal Calibration - Step in acceleration (34 ma <br />' in calibrate coil} automatic- <br /> ally applied approT{mately 1 <br /> second after start oP recording <br />' or csa ba applied manually <br /> 6 - Power: <br /> h P <br />Di <br />ti <br />St <br />d <br />d <br />S <br />i <br />1 <br />i <br /> ower <br />on - <br />ar <br />: <br />smograp <br />ss <br />pa <br />an <br />.$ ampere <br />e <br /> 18 watts <br /> Direct 1.8 ampere <br />' Write: 22 watts <br /> Source - 12 volt mainteaanco Pree sealed <br /> lead-acid atbrag9 battery <br /> <br />