SI value, the so called “velocity response spectrum”, is one of the standards to express an earthquake's destructive power against structures. SW-74SI is an advanced model equipped with alarm output to 10-step and SI value output.

Block Diagram

Features

• [Fine Visual Display]

  

• [Touch panel type]

  

  Direct operation makes speedy conrirm.

[Easy fixing]

U-shaped fixing hole makes easy 
anchor positioning for seismic 
pickup and fixing.

[System Calibration Service]

Calibration system is composed of a compact electrodynamic horizontal table PET-03 and an amplifier with oscillator PET-OA. It can simulate earthquake and enables an easy calibration test.

[Compact design]

By locating pick-up port at a lower place and rounding off the corners, we are able avoid impact to cables from outside.

[Water-proof type]

IP67 water proof compliant structure enables installation at rainy or dusty places.

[History Report Screen]

History up to 50 are saved.

[Safety and high accuracy]

This is the most advanced of all electrical type. Servo sensors can detect acceleration fromO Hz. Three units of the servo type sensors are equipped in a seismometer to detect accelerations in 3-axis.
 

Application

Hazardous material isolation

System Compsition

Outward Drawing

What is “SI value”?

SI value, the so called “velocity response spectrum”, is one of the standards to express an earthquake's destructive power against structures. Power plants or gas facilities are currently widely using this standard.
Earthquake damage on buildings may differ based on frequency range, or time, and can not be forecast based only on seismic intensity scale or acceleration.

Application

Hazardous material isolation

System Compsition

Outward Drawing

What is “SI value”?

SI value, the so called “velocity response spectrum”, is one of the standards to express an earthquake's destructive power against structures. Power plants or gas facilities are currently widely using this standard.
Earthquake damage on buildings may differ based on frequency range, or time, and can not be forecast based only on seismic intensity scale or acceleration.

Processing Unit（SW-74SI）

Option

Options to expand the function are provided.

Indicates Acceleration value, Seismic intensity scale and Alarm generation time.
“Color display in standard unit is a touch-panel display.
This optional external display is only an indicator without touch-panel function.

Takes out the alarm when 2-sets among 3-sets operate.
It increases the reliability of control･cut-off alarm contact output for seismic monitor.