Ultra-broadband Seismometer for Global Sesimic Observation

FOB Reference Price:Get Latest Price
$10,000.00 - $15,000.00 / Set | 1 Set/Sets (Min. Order)
Usage:
Vibration Testing Machine Other
Lead Time:
Quantity(Sets) 1 - 10 >10
Est. Time(days) 90 Negotiable
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Overview
Quick Details
Place of Origin:
Beijing, China
Brand Name:
Geodevice
Model Number:
BBVS
Power:
Electronic
Supply Ability
Supply Ability:
10 Set/Sets per Month
Packaging & Delivery
Packaging Details
Wooden case
Port
Qingdao Seaport
Lead Time :
Quantity(Sets) 1 - 10 >10
Est. Time(days) 90 To be negotiated

Broadband Seismometer of Seismic Systems:  

Model:  BBVS-360, BBVS-120,BBVS-60,BBVS-30,

 

Application

    • Local and Regional

    • Broadband Surface or Posthole Installation

    • GSN Installation

Features

    • High Performance Broadband Seismometer

    • Low Self-Noise Over a Wide Bandwidth

    • Portable Design

    • Low Power Consumption

    • Force-Balance Electronic Feedback

    • Robust Mass Locking Mechanism

    • Easy Installation

 

This Broadband Seismometer, is a force-balance feedback sensor available with frequency bandwidth 0.0083 Hz (120 sec) - 50 Hz, and 0.016 Hz (60 sec) - 50 Hz flat to velocity. The seismometer contains three independent sensors (one vertical and two horizontal) with built-in electronic feedback circuit, control and power conversion circuits, featuring low noise, large dynamic range and easy installation and use.

The seismometer has built-in leveling and mass lock/unlock facilities. The leveling mechanism includes two bubble levels, three adjustable feet and three locknuts which are located on the seismometer’s chassis.

The seismometer has a built-in mass zero-position adjusting mechanism to perform automatic mass adjustment. As soon as the seismometer is powered it checks the zero position of each component’s mass and automatically adjusts the zero position if needed. 

The seismometer is a low noise seismometer (see next tab for Power Spectral Density plot). The low self noise performance makes the BBVS-120 an ideal seismometer for local, regional, and global seismicity studies in different installation configurations, including observatory and portable, surface and posthole applications. 

 

 

 

 

 

 

Sensor Type

Triaxial, orthogonal

Feedback

Force balance with capacitive displacement transducer

Frequency Response

0.0083 Hz (120 sec) - 50 Hz, Model BBVS-120
0.0166 Hz (60 sec) - 50 Hz, Model BBVS-60

Sensitivity

2000 V/m/s

Full Scale Output

+/- 20 V peak-to-peak differential

Dynamic Range

>140 dB @ 5Hz

Output Impedance

<100 Ohms

Calibration

Coil resistance 1,000 Ohms, sensitivity: 10 m/s2/A

Leveling

Two Integrated bubble levels. Three adjustable leveling feet with locknuts

Mass Position

Remote monitoring and adjusting zero-point using 3 independent voltage outputs

Mass Locking

Mechanical lock-unlock mechanism accessible on outside of the case

Distortion

Total distortion less than -80 dB

Cross Axis Coupling

< 1%

Mechanical Zero

No need for adjustment within ambient temperature fluctuation +/- 20C

Power-Fail Protection

Built-in

Signal Overload Protection

Built-in

Auto-recovery Time

Full operation recovery within 10 minutes after either power fail or signal overload

Power Input

+12 VDC (9V to 18 VDC)

Operating Temperature

-20o C to +60o C

Power Consumption

~ 1.1 W

Water Tight Integrity

IP67 for outdoor use and immersion resistance

Case

Aluminum, Powder Coated

Dimensions

Diameter: 9.45 " (24 cm); Height: 10.6 " (27 cm)

Weight

26.4 lbs (12 kg)

Alignment

Removable orientation N/S pins screw into the base (brass for N, silver for S)

Lightning Protection

Built-in

Low Spurious Resonance

Higher than 100 Hz

Damping

0.7 of Critical

Linearity

Better than 1% of full scale

Type

Free-running Oscillator 

Accessories (optional)

Rugged transportable hardigg case. Flexible insulation bag

 

 

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