Figure 4-12: GMXW0 installed
When installation and commissioning is complete, the lid can be fixed via the appropriate mounting
screw.
4.5 GMXB0 floor box
The GMXB0 is a stainless steel recess box for flush mounting seismic detectors in concrete floors.
The GMXB0 is located in the floor prior to the concrete being poured to reserve a space for the de-
tector to be mounted in. It is important to consider cable access within the concrete surface. Two
holes are provided for conduit access for the connection cables.
For the best detection results from the seismic detector, connect the steel plate of the GMXB0 to
the steel supports within the structure of the floor.
The GMXB0 floor box provides a robust housing, which can withstand weights of up to 1 tonne, to
protect a GM7xx seismic detector when installed within the floor of a protected space.
There are pre-drilled and tapped M4 mounting holes for the detector and the GMXS1 test transmit-
ter. The GMXB0 has pre-formed conduit access holes to enable the cables to be securely offered
to the device through the concrete.
Figure 4-13: GMXB0 installed
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