Bosch Security Systems Seismic Detectors Application Guide I-200153-1
04.2016
6.2 Modular vaults
There are two main methods of constructing a concrete modular vault.
• Interlocking panels
• Panels with steel surrounds
As construction methods of vaults may vary, the transfer of detection radius from one
surface to an adjacent surface should not form part of any calculation.
For all types of modular vaults, it is strongly recommended that a survey is conducted to determine
the exact number of detectors required to fully protect the vault. To perform such a survey, the fol-
lowing equipment would be required;
• a) A temporary power source, 12v dc, a battery would suffice
• b) A GMXS5 external test transmitter
• c) At least 2 x ISN-SM-xx detectors
• d) Interconnecting cable for power and/or signalling
The basic guidelines for seismic detection in concrete vaults, strong rooms and modular vaults us-
ing the ISN-SM-50, ISN-SM-80 & the ISN-SM-90 seismic detectors are as follows:
A minimum of one detector should be provided in the following surfaces of the vault:
• Floor
• Ceiling
• Door
• Each of the four walls
The size of the vault, plus the coverage area will determine the exact number of detectors required.
Figure 6-10: Modular vault - detector positioning
Consider the size of the wall where the door is located. A larger wall and/or the con-
struction and fitting of the door may indicate a requirement for additional detection on
the wall.
For more information on installation method and on the mandatory and optional accessories, see
Section 2 Applications.
6.2.1 Interlocking panels
F
igure 6-11: Modular vault - interlocking panel construction
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