Digital geophone ZET 7155

  • Used for seismological surveys (within the scope of the kit for seismic research performance)
  • Automated synchronization (with other geophones of the kit for seismic research performance)
  • CAN 2.0 data interface

From 178 USD

* Minimum order value: from 7 700 USD

Specifications

of ZET 7155 digital geophone

Metrological specifications
Measured physical value Vibration velocity
Frequency range 0,5…1250 Hz
Measurement range 0,0006…60 mm/sec
Displayed values instant
Operability check in real-time mode synchronization and data quality control
Measurements reliability control sensing element integrity check,
measuring circuit control
Technical specifications
Data conversion 24-digit ADC
Data refresh rate 100, 200, 500, 1000, 2500 Hz
Sensor type integrated geophone
Data interface CAN 2.0
Data rate 100, 300, 1000 kbps
Operational parameters
Dimensions (without cable) Ø35×260 mm
Weight (without cable) 250 g
Cable length 660 mm
Device power from 9 up to 24 V
Consumed power 0,5 W
Operational temperature range from -40 up to +80 °C
Electromagnetic compatibility EMC
IEC 61000-4-2, ESD contact 4 kV, air 8 kV
IEC 61000-4-4, EFT power supply 0,5 kV, signal 0,25 kV
IEC 61000-4-5, Surge 500 V
  • Synchronization

    Interface converter is used for digital sensors synchronization with each other. It allows to control the mutual interference at various measurement points. The synchronization precision at the CAN data rate of 1000 kbps is ±1 µs.

Advantages

of ZET 7155 digital geophone

No adjustment required

chracteristics are stored in the measuring module intgrated memory

Measurements results

are represented in digital form

Syncronization

of digital sensors via interface converter

Reliability

stable characteristics and high reliability throughout operational period

Directive 2011/65/EU (ROHS, ROHS II)

DIGITAL GEOPHONES MEET THE REQUIREMENTS OF DIRECTIVE 2011/65/EU (ROHS, ROHS II) CONCERNING LIMITATION TO USE HAZARD SUBSTANCES (PB, HG, CD, CR(VI)) IN ELECTRICAL AND ELECTRONIC EQUIPMENT; THEY ARE MANUFACTURED USING LEAD-FREE METHOD, IN COMPLIANCE WITH THE EUROPEAN COMMUNITY REQUIREMENTS

Functions

of ZET 7155 digital geophone

Digital geophone ZET 7155 is a vibration sensor with an integrated sensing element enabling conversion of ground oscillations velocity into a proportional electric signal. Vibration speed value is calculated automatically by means of an integrated processor.

ZET 7155 is used in the kit for seismic research performance system. Seismic event recording algorithm is as follows: the geophones located in the control area convert mechanical oscillations into electrical signal and forward it to the recorder via the kit for seismic research performance. The recorder is used for signal registering and further processing.

Download

user manual for digital geophones ZET 7155

Application spheres

of ZET 7155 digital geophone

Geophysical surveys
Structural health monitoring
Seismic reasearch
Leak detection system

Connection

of ZET 7155 digital geophone to the kit for seismic research performance

ZET 7155 has an integrated cable with splash-proof socket GSC-4H (Herma-4).

Connection of digital geophones to the kit for seismic research performance is performed by means of T-piece with GSC-4H (Herma-4) mating connector.

Connector scheme is shown in the picture. The table below specifies designation and number of the contact.

splash-proof connector GSC-4H (Herma-4) for the connection of ZET 7155 digital geophones to the kit for seismic research performance
Contact number Designation
G2 (B) CAN 2.0 line «H»
G1 (A) CAN 2.0 line «L»
SH2 (1) +12 V
SH1 (2) GND

Seismic survey

using ZET 7155 digital geophone

Digital geophones are integrated into the scope of the kit for seismic research performance used for seismological surveys based on reflected and refracted waves method.

Maximum seismic streamer length is 250 m. The geophones are connected to the kit for seismic research performance with GSC-4H (Herma-4) connectors. The maximum number of digital geophones that can be connected to a single digital kit for seismic research performance is 24 pcs.

Digital geophone ZET 7155 is ready for operation – all necessary settings are stored in the integrated memory. In the case, if it is necessary to perform any parameters configuration, connect the sensor to the PC via interface converter and start ZETLAB “Device manager” software.

Natural oscillations level

of Digital geophone ZET 7155

Natural oscillations level - ZET 7155 digital geophones

Uniformity

of Digital geophone ZET 7155

Basic configuration

of Digital geophone ZET 7155

Digital geophone ZET 7155 - general view

Digital geophone ZET 7155 basic delivery scope includes:

  • Digital geophone ZET 7155;
  • set of operational documentation.

Technical support

Design

and installation of measuring networks

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