
Description
Intrinsically safe single-component seismometer SV*/DTSS of the ARAMIS M/E system
Key features:
- seismic signal measurement module of the ARAMIS M/E or INGEO system,
- integrated low-frequency GS-1 seismometer by Geospace with a digital transceiver module in a shared housing,
- conversion of analog signal from the seismometer into digital form,
- data transmission to the surface digital receiver module OCGA or underground OCGD local data concentrator LKP,
- synchronization of the clock generator for A/C converters,
- electrical locking and functional testing of the seismometer,
- intrinsically safe device of Group I, Category M1 with protection level "ia", compatible with a measuring concentrator of level "ia" or "ib".
Specification
|
Number of recorded components |
One: Z |
|
Natural frequency of low-frequency GS-1-LF sensors |
1.0 Hz ±10% |
|
Permissible tilt angle from vertical during operation |
± 7.5o |
|
Sensitivity |
118 V/m/s |
|
Mass of moving coil in each sensor |
700g ±5% |
|
Maximum coil displacement in each sensor |
6.35 mm P-P |
|
Shock resistance |
50G |
|
Transmitted frequency band (without probe) – limited by anti-aliasing filter: |
500 Hz mode – 0-206.5 Hz 2 kHz mode – 0-826.0 Hz |
|
Configurable high-pass filter |
From 0.1 to 1 Hz with option to disable |
|
A/C converter resolution |
24 bits |
|
Processing dynamic range (total SNR) |
130 dB @ 250 Hz |
|
Sampling frequency |
500 Hz, 2 kHz |
|
Adjustable gain |
x2, x4, x8, x16, x32, x64, x128 |
|
Transmission type / Synchronization / Special application conditions |
DTSS – pulse digital transmission via telecom power line |
|
Transmission range |
10 km for OCGA or 5 km for OCGD |
|
IP protection rating |
IP65 |
|
Additional functions |
electrical locking, seismometer test |
|
Mounting method |
SVd – anchor, floor SVu – anchor, ceiling SVf – feet, floor |