Kit for seismic research performance

A kit for seismic research performance is represented by a set used for seismological studies and consists of a recorder (portable ZETSENSOR set), task-specific software package and digital geophones joined by cables and forming a receiver line.

The kit for seismic research performance is used for performing measurements in various climatic zones. Splash-proof connections GSC-4H (Herma-4) are used for establishing a reliable connection between the geophones within the seismic system.

Light weight of the kit for seismic research performance (3,14 kg per 100 m of the measuring line) is attributed to using of 4-wired telemetric 6,5 mm cable.

From 5 086 USD

Specifications

of the Kit for seismic research performance

Metrological specifications
Measured physical value vibration velocity
Frequency range from 1 up to 1000 Hz
Readings instant
Measured range (depending on sensing element) 0,0006…60 mm/s
Technical specifications
Number of channels from 16 up to 24
Frequency update range 100, 200, 500, 1000, 2500 Hz
Sensor type digital geophone
Offline recorder up to 32 Gb
 GPS synchronization yes
Interface connection to PC USB/Ethernet
Data conversion 24 bit ADC
Data transfer interface CAN 2.0
Exchange rate 300 Kbps
Programmable gain 128, 64, 32, 16, 8, 4, 2, 1
Trigger yes
Data format Seg-Y
Data processing method* Refraction, Reflection, MASW
Performance specifications
Power rate 18 – 24 W
Power consumption 10 W
Offline operation time 4 hrs
Length 120 m – 250 m
Operating temperature range  -10 +40 °С
Indicator LCD, 98×32
Control keys 2 pcs

* Data processing is performed by third-party Software

Advantages

of the Kit for seismic research performance

Synchronization

of all geophones within the kit of seismic research performance

Measurement results

are transmitted in digital format

Scalability

variable length of the kit for seismic research performance: 120 – 250 m

Product version

2 versions available (black and orange) depending on the particular task

Portability

compact dimensions enable measurements in any environment

Reliability

stable performance and high reliability

Description

of the Kit for seismic research performance

The kit for seismic research is a system for seismic surveys performance using digital geophones  ZET 7155, interconnected by cables and forming a receiver line. Cable line has up to 24 connection points for geophones. Receiver line is connected to the offline recorder  (portable system ZETSENSOR), which can be connected to a laptop or a tablet via USB cable or Wi-Fi connection.

Length of the cable is up to 250 m. Geophones are connected to the seismic streamer via GSC-4H (Herma-4) connection. The maximum number of digital geophones which can be connected to one seismic streamer is 24 pcs.

One more advantage is the use of 4-wired 6,5 mm cable enabling connection of any amount of digital geophones and contributes to the minimum possible weight of the measuring line (3,14 kg per 100 meters of measuring line).

The kit for seismic research performance has a number of additional advantages:

  • high data transfer capacity
  • stable quality of signal transmission for long distances
  • low noise level
  • high cost-efficiency
  • portability of the system due to the use of telemetric cable, which is 7 times lighter than similar analog cable

The figure shows 24-channel digital cable of the kit for seismic research performance (to the left), 16-channel analog cable (in the middle) and 24-channels analog cable (to the right).

The offline recorder is represented by portable  ZETSENSOR system (a set of interface modules placed inside of a compact plastic casing). Standard delivery scope includes:

  • offline recorder ZET 7173, (for the recording of seismic events and offline mode measurements data);
  • interface module ZET 7174, for connecting to the laptop via USB;
  • synchronization module ZET 7175, for geophones time sync based on satellites signals;
  • digital indicator  ZET 7178, (for indication of readings from each of the geophones, battery charge level, and SD-card memory indication);
  • logical analyzer ZET 7160, (for detecting seismic events following the impact hammer signal);
  • battery module.

Application scope

of the Kit for seismic research performance

Geophysical surveys
Building structure control system
Seismic surveys
Leakage detection systems

Seismic surveys perfomance

using the Kit for seismic research performance

A seismic survey is a geophysical method of geological objects survey using elastic vibrations or seismic waves. The seismic surveys are based on two major methods – one of them is based on reflected waves and the other – on the refracted waves.

Seismic survey methodology is based on studying waves cinematics (i.e. the time of waves shifting from the source of impact to the seismic receivers, recording dynamics and strength of waves). Seismic event recording by means of a kit for seismic research performance is conducted in the following way: the geophones located in the survey area transmit mechanical oscillations into electric signal and send it to the offline recorder via the cable of the geophones line. The recorder registers and processes the signals. As a result of signal processing, one can define the depth of the geo-seismic section, its location, wave speed. Using these geo-seismic data one can obtain geological characteristics of the surveyed area.

The research depth is up to 250 meters depending on waves propagation environment. In order to obtain high-precision data, it is recommended to use longer measuring lines with a large amount of measuring channels.

The charts below depict information of seismic events registered by the kit for seismic research performance in the course of a test survey.

Seismic impact detection
Seismic impact detection in Multichannel oscillograph program

For the purpose of further analysis, the data is saved in the  Seg-Y format and is processed by RadExPro Software.

As a result of automated data processing, we can see an image of the seismic environment.

Then the seismiс sections are further processed in order to outline seismic borders and geological objects (this process implies participation of a specialist). As a result, we can see a seismic section with clearly outlined borders and elastic properties data.

Kit for seismic research: tests performance and obtained data processing

You can find more videos relating on seismic surveys in the Clause Video lessons and on our YouTube channel Zetlab Public

Settings and diagnostics

of digital geophones

Settings and diagnostics of digital geophones forming the kit for seismic research performance can be conducted in the survey area. In order to do this, you can use a special configuration kit which is included in the basic delivery scope.

All you need is a laptop with pre-installed ZETLAB Software and a compact device which can be carried in the laptop case.

Комплект для конфигурирования цифровых геофонов

Basic functions

of the Kit for seismic research performance

Conversion
Digital processing
Recording
Synchronization
Detection

Delivery scope

of the Kit for seismic research performance

Basic equipment for the seismic acquisition kit

The delivery scope of the Kit for seismic research performance includes:

  • seismic recorder (the length is variable depending on your request)
  • digital geophones (their number is variable depending on your request)
  • offline recorder (recorder and a set of measuring modules ZET 7173, ZET 7174, ZET 7175, ZET 7178, ZET 7160)
  • К22-0,5/1 cable for connection of the measuring line to the seismic recorder  FQ14-4TJ-7 — GSC-4H (Herma-4)
  • power supply module for the recorder A04-19
  • a  kit for diagnostics of digital sensors (ZET 7174, ZET 7070, К22-0,5/1 cable – 1 pc, К15/1-1,8 USB cable – 2 pcs, К11/1-2 Ethernet Cable – 1 pc)
  • ZET Key (USB-key with the software)
  • CD with ZETLAB Software for data recording and representation
  • set of operational documentation
  • terminal resistance 120 Ohm
  • screwdriver
  • notebook, pen
  • case for measuring system storage

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