SW-74 Seismic Monitoring System

Seismic Monitoring System “SW series” use the tri-axis servo acceleration pickup which can detect the minute earthquake.
With various functions, such as alarm buzzer or alarm external reset, it protects you from secondary disaster when the earthquake occurs.

SW-74 spec

The functions displayed by gray colour are excluded.

Configuration

Configuration

Application

Hazardous material isolation

Hazardous material isolation

2 out of 3 units method of Securing Security

Block Diagram

Block Diagram

Features

  • [Fine Visual Display]

    Fine Visual Display

  • [Touch panel type]

    Touch panel type

    Direct operation makes speedy conrirm.

  • [Easy fixing]

    Easy fixing

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

  • [System Calibration Service]

    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]

    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]

    Water-proof type

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

  • [History Report Screen]

    History Report Screen

    History up to 50 are saved.

  • [Safety and high accuracy]

    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.

System Compsition

System Compsition

Outward Drawing

Outward Drawing

Specifications

Model SW-74
Display Element STN monochrome LCD with touch switch
(back light color: Green/Orange/Red) (Replacement unnecessary)
Earthquake monitor screen Present time
Earthquake generation screen Earthquake generation time, Mex. acceleration,
Seismic intensity scale, Alarm operation
Alarm hold screen Reset button (Whole reset of alarm/buzzer)
Each setting screen Trigger, Alarm, Date/time
Maintenance screen Pickup test, Earthquake history
Alatm & Buzzer Upper 3-step (ALM1-3) Individual setting,
buzzer 1-point
Acceleration : 0.1-999.9Gal
Setting interval : 0.1 Gal, 0.0 is buzzer operation OFF
Alarm & Buzzer
Reset Method
a. External reset terminal (All step reset by no-voltage a contact)
b. Automatic reset by built-in time
c. Reset button the touch panel (Available on the alarm hold screen)
1 ~ 9999sec, (Setting interval: 1-sec, 0 is automatic reset OFF)
Fault Alarm [Power failure] 1a/1b contact switching type
Contact rating: 2A 30VDC
(Max. allowance voltage/current : 220VDC/2A)
Serial Output For maintenance (conforms to RS232C) : MC1 (Switching type with screen control)
For external display (conforms to RS422) : MC2
Back-up Unit Backup time ≧10min (ready time), Charging time ≦48hrs
(No function at the operation by optional power 24VDC)
Mounting Method Wall type
Ambient Temperature 0~+50℃
Humidity Range 10~85%RH
Power Supply 100VAC±10%, ≦50VA
24VDC±10%, ≦35W(option)
Outer Dimensions See the outside view
Painted Color Panel:Similar to Munsell 5GY8/0.5
Case: Munsell N6.0
Weight 3kg approx.

Option

Options to expand the function are provided.

Extemal Display ED74(for SW-74SI,SW-74)

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.

Control Unit CU-5

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.