Guralp-systems CMG-3T Manual do Utilizador descarregar pdf (Página 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†

July 2009 51

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