ZETLab ZET 7152-N-VER.3, User Manual, Page: 27 / 38

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3 Operation of ZET 7152-N-VER.3
3.1 Mounting of ZET 7152-N-VER.3: off-line use
Mounting of ZET 7152-N-VER.3 on solid surface (steel, concrete) is performed by means
of the pins located at the bottom part of the seismograph. Mounting sequence is as follows:

Place ZET 7152-N-VER.3 in the installation area, align measuring axis “X” by azimuth
(normally direction to the North is used);

Using the pins, align ZET 7152-N-VER.3 by horizontal plane, use bubble cell to check
the level;
In order to mount ZET 7152-N-VER.3 on ground surface, use special pins for ground
mounting.

Remove adjustable pins from ZET 7152-N-VER.3 base;

Install the pins for ground mounting;

Place ZET 7152-N-VER.3 in the installation area, align measuring axis “X” by azimuth
(normally direction to the North is used).

Push ZET 7152-N-VER.3 into the ground (the pins should be placed into the ground by
2/3 of their length). If necessary, use additional pressure to align ZET 7152-N-VER.3 by horizontal
plane (use bubble cell to check the level).
3.2 Mounting of ZET 7152-N-VER.3: stationary use
Mounting sequence for stationary use:

Remove adjustable pins from the base of ZET 7152-N-VER.3;

Fix the mounting plate #1 with М8 screws (included into the mounting kit) to the base of
the seismograph;
Note: Mounting dimensions of plate #1 are specified in Annex А.

Using M8 screws, attach the mounting panel #1 fixed to ZET 7152-N-VER.3 (observe
direction of X axis of ZET 7152-N-VER.3) to the concrete surface in the area of seismic activity
control – for instance, at the top surface of bore pile, foundation surface, etc;