3T Portable - Güralp Systems Ltd
3T Portable - Güralp Systems Ltd
3T Portable - Güralp Systems Ltd
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<strong>3T</strong> <strong>Portable</strong><br />
High performance, low noise, weak motion, compact,<br />
broadband seismometer<br />
The Guralp <strong>Systems</strong> CMG-<strong>3T</strong> portable is a compact, three-component, broadband<br />
instrument suitable for rapid deployment.<br />
The instrument is based on a well proven, established design that has been in continuous<br />
production since 1987 and used on many National Seismic Networks with in excess of 3000<br />
instruments deployed worldwide.<br />
Applications:<br />
Ÿ Seismic monitoring<br />
Ÿ Surface and sub surface vaults<br />
Ÿ Posthole installation<br />
Key Features:<br />
Ÿ Force feedback broadband instrument<br />
Ÿ Lifting handle and all connectors on the top of<br />
the instrument.<br />
Ÿ Waterproof and durable with ‘O’-ring seals<br />
throughout<br />
Ÿ Quick and easy, one-person installation<br />
Ÿ Digital output and communication versions<br />
available<br />
Ÿ Optional hybrid response models are available,<br />
e.g. flat to velocity from 50 Hz to 30 s and flat to<br />
acceleration between 30 s and 200 s, offering<br />
unrivalled dynamic range<br />
289mm<br />
168mm<br />
GÜRALP SYSTEMS LTD | W: guralp.com | T: +44 118 981 9056 | E: sales@guralp.com | Seismology | Energy | Civil Engineering | Security
<strong>3T</strong> <strong>Portable</strong><br />
Technical Specifications<br />
System<br />
Configuration<br />
Performance<br />
Response<br />
Output sensitivity<br />
Peak output<br />
Cross axis rejection<br />
Linearity<br />
Lowest spurious<br />
resonance<br />
Self-noise<br />
Dynamic range<br />
Calibration<br />
Type<br />
Calibration controls<br />
Mass Locking<br />
Locking<br />
Mass position output<br />
band<br />
Mass recentring range<br />
Sensitivity<br />
Response<br />
Level<br />
Power<br />
Power consumption<br />
Power supply<br />
Optional low power<br />
sensor<br />
Protection<br />
Control<br />
Mass control / locking<br />
Offset zeroing<br />
Triaxial orthogonal sensors<br />
120s – 50Hz standard<br />
Other options available<br />
-1 -1<br />
2 × 750 V/ms (1500 V/ms )<br />
Other options available<br />
±10 V differential<br />
Over 65dB; sensor axes<br />
orthogonal to within ± 0.05°<br />
> 107dB horizontal, > 111dB<br />
vertical<br />
> 140Hz (vertical)<br />
Measured Self noise below the<br />
NLNM from >200s to 20Hz<br />
(Vertical)<br />
> 140dB over the entire passband<br />
Pulse, sine wave and broadband<br />
Independent signal & enable lines<br />
exposed on sensor connector<br />
Remote or automatic electronic<br />
mass locking, unlocking and<br />
centring<br />
DC – 120 seconds<br />
± 2.5° from horizontal<br />
2<br />
510 V-s /m, nominal<br />
Flat to acceleration, DC to 120s<br />
20 Vp-p, maximum<br />
0.744W<br />
10 – 36V DC<br />
5V DC supply (output ±4.5 V)<br />
Polarity, power fail, signal<br />
overload<br />
Remote locking, unlock and<br />
centring<br />
Automatic<br />
Environmental<br />
Operating Temperature<br />
Operating Temperature<br />
sensitivity<br />
Storage Temperature<br />
Instrument Levelling<br />
Case integrity<br />
Shock<br />
Humidity<br />
Auto recovery time<br />
Alignment<br />
Physical<br />
Dimensions<br />
Enclosure<br />
Weight<br />
Handling<br />
Connectors<br />
Part Numbers<br />
<strong>3T</strong> <strong>Portable</strong><br />
<strong>3T</strong> <strong>Portable</strong> with power<br />
cable<br />
<strong>3T</strong> portable with power<br />
cable and handheld<br />
control unit<br />
<strong>3T</strong> Hybrid<br />
–20 to +75°C (–55°C option)<br />
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