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

POR (price on request)

* 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.

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

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

Data protection notification

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Digital geophone ZET 7155

Specifications

Synchronization

Advantages

No adjustment required

Measurements results

Syncronization

Reliability

Functions

Download

Application spheres

Connection

Seismic survey

Specialized calculator

Natural oscillations level

Uniformity

Basic configuration

Technical support

Design

Programming

Diagnostics

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