Multi channel input type seismic monitor corresponding to the network

Display & Announcement

・Seismic-intensity
・Peak-acceleration
・Peak-velocity
・Spectrum-intensity
・Trigger time
・Predominant period
・Period at peak acceleration

Time History Data

3 or 6CH 24Bit Data save (VIP-18)
9～36CH, 24bit Data save (VIP-19)
in CF card

Seismic

4-Level alarm

Multiple Network Access

LAN (10/100 Base-TX)
2 serial Ports (9600～115.2kbps)

System Configuration

Specification

This system is designed to keep the rules of JMA and FDMA notification.
The specification may change without notification because of the proved product.

Seismic Monitor corresponding to the Network. Display the measuring seismic intensity, scale of intensity and peak acceleration on the color LCD

Display & Announcement

・Seismic-intensity
・Peak-acceleration
・Peak-velocity
・Spectrum-intensity
・Trigger time
・Predominant period
・Period at peak acceleration

Time History Data

3 or 6CH 24Bit Data save (VIP-18)
9～36CH, 24bit Data save (VIP-19)
in CF card

Seismic

4-Level alarm

Multiple Network Access

LAN (10/100 Base-TX)
2 serial Ports (9600～115.2kbps)

System Configuration

Specification

Seismometer with built-in tri-axis accelerometer and external input tri-channel

Configuration

Specifications

Example of observation

 Health Monitoring and Earthquake Observation by Servo Velocity-meter

・All-in-one sensor recording large capacity waveform and LAN connection

・Observationof micro-tremor and small earthquakeby servo velocity-meter

・Response analysisof structure by micro-tremor

・Recording continuous record for approx. 30 days and trigger record for approx. 160 hours in a CF card

・Connect by single LAN cable including power and synchronization (CV-374BV)

CV-374A ： For general network line.
(DC12V power supply is necessary to the main unit)
CV-374B ： For exclusive network line by single LAN cable.
(Power supply and various synchronizations from exclusive HUB)

Common Specifications CV-374AV, CV-374B

Example of Use

The specification may change without notification because of the proved product.

Modify the time of Ocean Bottom Seismograph

3 Months of Operation at the 6000m deep Seabed
24bit: 4CH AD Converter, 40Gbyte H.D.
Tri-axial Velocity Sensor and Hydro-phone

Specification

Super Sonic Controlled   TOBS-24N

Onboard Instruments

TMC-8200 GPS Precision
Clock Calibrator

OBP-02 OBS Parameter
Setting Unit

MODEL-LC Control Unit

Constitution

The specification may change without notification because of the proved product.

Self-floating ocean bottom seismograph suitable for the observation of ocean crust structure and natural earthquake

3 Months of Operation at the 6000m deep Seabed
24bit: 4CH AD Converter, 40Gbyte H.D.
Tri-axial Velocity Sensor and Hydro-phone

Specification

Super Sonic Controlled   TOBS-24N

Onboard Instruments

TMC-8200 GPS Precision
Clock Calibrator

OBP-02 OBS Parameter
Setting Unit

MODEL-LC Control Unit

Constitution

The specification may change without notification because of the proved product.

Set the operating condition or retrieve the recording data with connecting TS Station from PC to our corresponding recorder

Communication Software for remote control of various condition setting and data collection between in-house seismic intensity meter/data logger from PC.

・ Features（Pwave32 standard installation / Operation environment: Windows® 7 or later）

１．Registration of new observation station & editing of established observation
station’s registration information
２．Display observation station chart, newest information of observation station
and trigger information
３．Copy of Observation station / Delete / Import / Export
４．Earthquake information / Trouble information standby
５．Automatic collection of recorded data regularly / Periodic checking and
basic set up of various operations
６．Collect recorded data in manual mode
７．Save trigger history & display / Display waveform of recorded data
８．Save status history & display

(Display samples)

Display and analyze the waveform of time-series data recorded by our recorder.

Basic Software for Display
Waveform and Spectrum Analysis

･ Features （Operation environment: Windows® 7 or later）

１． Waveform display
Display waveform based on time history data.
２． FFT spectrum
Display in graph based on calculation of Fourier spectrum and
Power spectrum from time history data.
３． Response spectrum
Display Response spectrum based on calculation of absolute acceleration,
relative velocity and relative displacement from time history data by acc.
４． SI value (Spectral Intensity / Damage Index of how much structural damage will be caused by an earthquake.)
Display SI value based on time history data by acc.
５． Seismic Intensity
Display Seismic Intensity based on time history data by acc.

（Display samples）

Survey of an underground structure

After-shock, micro-earthquake and microtremor measurement

SAMTAC-802 series
24bit, 3 or 6 channels
26 hours operation by internal battery Storage media:
CF card: SAMTAC-802C
Hard Disk: SAMTAC-802H

SAMTAC-802C, 802

VSE-15D

Recorder

SAMTAC-802C or 802H

The specification may change without notification because of the proved product.

This system works well on moving obsevation with the field-portable vibration meter built-in Windows® PC. Measurement of high precision is available from the system configuration (max. 9 components ) with the high resolustion servo velocity meter.

Accessories（Fitting in combined sale of ＳＰＣ-５２ and ＶＳＥ-１５Ｄ６×３ components)

AC power cable (2.0m) X 1, GPS antenna for car use, SPC-52 setup disc X 1
Mounting base for 3 components Velocity meter (BS-3), Case for 3 components Velocity meter (CS-3A), Connecting cable for Velocity meter (2.0m)

Option

Extension cable for Velocity meter and Cable reel (each Max. 100m)

Example of observation

Information in this document is subject to change  without notice.

Spetifications

Configuration

Example of observation

Earthquake Observation and Health Monitoring

・All-in-one sensor recording large capacity waveform and LAN connection
・Observation of micro-tremor to strong motion by servo accelerometer
・Recording continuous data and trigger file in a CF card together
・Send seismic information such as maximum value, seismic intensity and predominant period, and waveform data
・Connect by single LAN cable including power and synchronization (CV-374B)

CV-374A ： For general network line. (AC100V power supply is necessary to the main unit)
CV-374B ： For exclusive network line by single LAN cable. (Power supply and various synchronizations from exclusive HUB)

Common Specifications CV-374A , CV-374B

Example of Use

The specification may change without notification because of the proved product.

Display & Announcement

・Seismic-intensity
・Peak-acceleration
・Peak-velocity
・Spectrum-intensity
・Trigger time
・Predominant period
・Period at peak acceleration

Time History Data

3 or 6CH 24Bit Data save (VIP-18)
9～36CH, 24bit Data save (VIP-19)
in CF card

Seismic

4-Level alarm

Multiple Network Access

LAN (10/100 Base-TX)
2 serial Ports (9600～115.2kbps)

Seismic Monitor・・・3 or 6CH
(VIP-18)

System Configuration

Specification

This system is designed to keep the rules of JMA and FDMA notification.
The specification may change without notification because of the proved product.

Recorder for the wide dynamic range earthquake
Selectable Recording from 3 to 36ch （3 units）

GPS Synchronization/Network Connection/Real Time Data Output
Recordable of continuous data with extension CF card
SAMTAC-20: Display Seismic Intensity & Class on LCD（*）
SAMTAC-20S: Display Max. Measured Value on LCD when earthquake occurs （Max. 9-axis）
Display Screen（Image） SAMTAC-20

Specifications

Note: The specification may change without any notice because of the improved product.

Displacement gauge to record the relative displacement of foundational body and building mechanically with no power

High precision displacement gauge using the magnetostrictive type sensor

Accelerometer built-in bi-axis.

Explosion-proof and tri-axis borehole type acceleration

Tri-axis and ground type acceleration

Transverse type of SA-355CT

Tri-axis borehole type accelerometer 

Accelerometer built-in tri-axis

Tri-axis Model

Example of Use

Dimension

The specification may change without notification because of the proved product.

Uni-axis measuring accelerometer

Uni-axis Mode1

Example of Use

Dimension

The specification may change without notification because of the proved product.

Features

Vertical component and long period velocity-meter to measure the strong motion

Simultaneously output the velocity and acceleration

Horizontal component and long period velocity-meter to measure the strong motion Simultaneously output the velocity and acceleration.

Portable velocity-meter with built-in tri-axis VSE-15D-6

Portable velocity-meter with built-in tri-axis VSE-15D

Bore-hole type velocity-meter of VSE-355G3

Feature

The model VSE seismometer is designed for very wide range earthquake measurement.
Recommendable application: Broadband Seismology, Regional and Teleseismic, Microseisms, Tsunami warning, Strong-motion observation.

Frequency response

Specifications

Recording Range

VSE-355G3 can record the important seismic signals shown by blue area

Dimension

Micro Earthquake (Teleseismic)

Small aftershock of Sumatra Earthquake, Observed in Japan distance of 6,400km from Epicenter.

Strong Motion (Near Source)

Off-Tokachi Earthquake (M=7.1), on September 26, 2003, distance from 90km from Epicenter.

The specification may change without notification because of the proved product.

Ground type velocity-meter with built-in wider broad band and higher resolution tri-axis, and possible to measure from micro to strong motion.

BROADBAND

2m/s & 20m/s2 (2000Gal) Maximum 146dB Dynamic Range 0.008Hz to 70Hz 2m/s & 20m/s2

(2000Gal) Maximum

146dB Dynamic Range

0.008Hz to 70Hz

(      Strong Motion   )

(～ Micro Earthquake )

a) The data are extracted from “Performance of the VSE-355G2 Strong Motion Velocity SeismometerReport to the IRIS-GSN Sub-Committee’. Clinton, J.F. and Heaton, T.H.,Caltech, 2002”
b) VSE-355G3 is revised model of VSE-355G2.

Specifications

Frequency response

Comparison of Noise Specter

The clip level of VSE is larger than STS-2. Therefore the noise level of VSE is larger than STS-2.

Calculated Ground Displacement

It is generally observed the abnormal results in calculated displacement from the accelerometers however normal results are observed from the velocity.
(Actual result at 1995.1.17 Hanshin-Awaji Strong motion earthquake)

Recording Range

VSE-355G3 can record the important seismic signals shown by blue area.

Dimension

The specification may change without notification because of the proved product.

Bore-hole type velocity-meter with built-in tri-axis to measure the strong motion
Simultaneously output the velocity and acceleration

Surface mount model

Practical Use

Specifications

Seismometer

Power Unit

Theory

Equation form of Velocity and Acceleration are expressed as:

Readout signals are very steady because m, R, C, and Gs are steady value.
Not including the factor of displacement sensor of pendulum is important.
The specification may change without notification because of the proved product.

Surface mount model

Practical Use

Specifications

Seismometer

Power Unit

Theory

Equation form of Velocity and Acceleration are expressed as:

Readout signal are very steady because m, R, C, and Gs are steady value.

Not including the factor of displacement sensor of pendulum is important.

The specification may change without notification because of the proved product

Useful for

 Survey of an underground structure.
 Earthquake monitoring
 Aftershock
 Micro-tremor
 Any vibration Experiment

Feature

Sensibility is higher than the accelerometer

Dimension

SPETIFICATION

PRINCIPLE

The sensing mechanism is similar to force balanced servo accelerometers except the time differential part is adapted in feed back circuit.

The output [Eout] means very stable and high accuracy because unstable and nonlinear elements for sensing are not included in this expression. The M, r, G, C, R are all stable solid parts, this is important for guarantee the accuracy.

Useful for

 Survey of an underground structure.
 After shock
 Micro-tremor
 Micro-earthquake
 Any of vibration Experiment

Feature

Sensibility is higher than accelerometer

Dimension

SPECIFICATION

PRINCIPLE

The principle of servo velocity seismometers is similar to general servo accelerometers, but it adapts the differentiating circuit in the feedback circuit.

The sensitivity of velocity seismometer is determined by the stable elements of the M, R, r, C and G. Therefore, the change in α and the scale factor of amplifier (A) do not affect the characteristics of the velocity seismometer.

This is a good point of servo velocity seismometer, and it is possible to maintain the stable sensitivity and characteristics for a long period.

The specification may change without notification because of the proved product.

Useful for

 Survey of an underground structure.
 After shock
 Micro-tremor
 Micro-earthquake
 Any of vibration Experiment

Feature

Sensibility is higher than accelerometer

Dimension

SPECIFICATION

Principle

The principle of servo velocity seismometers is similar to general servo accelerometers, but it
adapts the differentiating circuit in the feedback circuit.

The sensitivity of velocity seismometer is determined by the stable elements of the M, R, r, C and G. Therefore, the change in α and the scale factor of amplifier (A) do not affect the characteristics of the velocity seismometer.
This is a good point of servo velocity seismometer, and it is possible to maintain the stable sensitivity and characteristics for a long period.

The specification may change without notification because of the proved product.

Useful for Dimension
 Survey of an underground structure.
 After shock
 Micro-tremor
 Micro-earthquake
 Any of vibration Experiment

Feature

Dimension

Specification

Principle

The principle of servo velocity seismometers is similar to general servo accelerometers, but it
adapts the differentiating circuit in the feedback circuit.

The sensitivity of velocity seismometer is determined by the stable elements of the M, R, r, C and G. Therefore, the change in α and the scale factor of amplifier (A) do not affect the characteristics of the velocity seismometer.
This is a good point of servo velocity seismometer, and it is possible to maintain the stable sensitivity and characteristics for a long period.

The specification may change without notification because of the proved product.