AE System

Seismic Monitoring System SW-72R

Model：SW-72R
Overall dimensions：See outside view
Product weight：4Kg
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Product introduction
Technical parameters
Product accessories
Document download

SW-72R is a high-end model added with SI (Spectrum Intensity) function which is well correlated with damages of structures on the functions of popular priced model SW-72. It keeps compact size as of SW-72’s even employing the Servo type Accelerometers as sensing elements.

Features

Outward Drawing

MODEL	SW-72R
Detecting Method	Omni-directional non-directivity detection by vector product acceleration
Frequency Range	0.3-10Hz (±10％）
Acceleration Range	0 - 5000 Gal (3-component vector product) NS, EW direction : ±3000Gal, UD direction : +2000 - 4000Gal
Low Pass Filter	30Hz(-3dB), 4th butterworth
SI Value Measuring Range	Measuring range : 0-1500 Kine (3-component vector value) Period range : 0.1-2.5 sec (±10％) (Natural period 0.1 sec step, 　　　　　　　Calculation by 25 of 1-freedom simulation filter) Damping : 1% step any setting
A/D Converter	16bit, 100Hz sampling
Indication	7-segment LED, 4-digit display (xxx.x or xxxx)
Alarm Step	Upper limit 3-step (ALM1 - 3) individual setting (Acceleration/Instrumental seismic intensity/SI value : Internal setting is possible)
Alarm Setting Value	0.1 - 999.9Gal (Gal/instrumental seismic intensity/Kine) 0.1 step, 0.0 is alarm operation OFF (Seismic intensity alarm scale is set by Instrumental seismic intensity)
Alarm Contact	1a contact (Photo MOS relay, COM common) Contact rating 200V-0.65A (common for AC/DC, peak value) Relay : made by panasonic, PD1a type (AQY277A)
Alarm Reset Method	a. External reset terminal (all step reset by no-voltage a contact) b. Automotac reset by built-in timer 1-9999sec., Setting interval: 1-sec., 0 is automatic reset OFF
DC Output	4-20mADC, Load resistance ≦300Ω Output content switching type (Acceleration/SI value/Seismic intensity scale by internal setting) Full scale value any setting
Serial I/F	Communication with SW-74SI (Conforms to RS422)
Clock	Accuracy:≦70ppm (6sec/day)
Time Connection Input	±30 sec correction (external input of no-voltage a contact)
Ambient Temperature	0-+50℃
Humidity Range	10-100％RH
Power Supply	24VDC　±10％ ^*2 ≦15W
Outer Dimensions	See outside view
Structure	Water-proof structure (IP67)
Material	Aluminum die casting
Painted Color	Silver metric
Weight	4Kg
Mounting Method	Installation on the ground (fixed with anchor)
I/O Cable	Water-proof connector connected One-touch lock connector made by NANABOSHI ELECTRIC MFG NRW-2421PF11 (Outer diameter : 34.1mm approx.) Cable made by Fuji Electric Wire Industries Twisted cable (with sheilded) FKEV-SB 0.3sq × 10 pair Outer diameter : 10.5 mm approx.

Built-in accelerometer
Pickup model	VP-5511B/3
Conversion Method	Force balance servo type accelerometer
Detection Method	Horizontal 2-direction, Vertical 1-direction
Sensitivity	0.204V (m/s²) ±5％
Frequency Range	0-100Hz ±10％ 0-30Hz ±3％
Natural Frequency	≧300Hz
Max. Measuring Acceleration	NS, EW direction : ±29.4m/s² UD direction : -39.2-+19.6m/s²
Linearity	0.3% full scale