Guralp Systems CMG-3T - Manual (Page 51)

Operator's guide
7 Specifications
Hybrid sensors Velocity output bandwidth 0.1 – 50 Hz
High pass filter output flat
to acceleration
0.01 Hz – spec*
High pass filter output flat
to velocity
spec – 50 Hz*
Mass position output DC – 0.1 Hz
Velocity sensitivity 1400 V/m/s
Acceleration sensitivity 2000 V/m/s²
Velocity sensors Velocity output bandwidth spec – 50 Hz*
Mass position output DC – spec Hz*
Velocity sensitivity 2 × 750 V/m/s
Mass position sensitivity 1000 V/m/s²
Controls
Mass locking and
unlocking
remotely operated
Mass centring
automatic,
microprocessor
controlled
Mechanics and
electronics
Sensors
3 orthogonal sensors,
each 0.180 kg
Lowest spurious resonance above 140 Hz
Total weight
13.5 kg
Sensor transducer type
capacitive
displacement
Feedback transducer type magnet/coil
Connector pressure tight
Temperature range with
masses locked
–35 to +75 °C
Operational temperature
range
–20 to +65 °C**
Power Supply 10 – 36 V
Current at 12 V DC 75 mA†
Current at 12 V DC during
calibration
100 mA†
Current at 12 V DC during 330 mA†
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