Emerson GDU-Incus Reference Manual page 14

Ultrasonic gas leak detector
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May 2019
The GDU-Incus has a variety of mounting options to incorporate installation into most situations found
in industrial environments such as wall / flat surface mounting (refer to section 3.4.1), vertical pole
mounting (refer to section 3.4.2), and mounting in an environment where DNV certification is required
(refer to section 3.4.4).
The GDU-Incus can be mounted in any orientation (unless a DNV bracket is used which fixes the
detector in vertical orientation) but care should be taken to position the display facing an area where
the information can be easily viewed.
Figure 3-2 3D View of Detector Coverage
The GDU-Incus utilizes four independent sensor heads for full coverage.
the coverage (detector not to scale) at a 3m (10 foot) height above floor level with the detector
pointing vertically downwards. The GDU-Incus coverage is specified as meters radius at the floor level
as this is the minimum sensing distance. As shown, the entire area below the detector is covered as well
as some of the area above and around the detector. Each sensor overlaps the next, so areas underneath
the detector are covered by multiple sensors.
Figure 3-3
highlights that the radius coverage stated is the minimum area covered.
6
shows a 2D view of coverage when the detector is mounted vertically downwards and
Reference Manual
00809-0100-3003, Rev AA
Figure 3-2
shows a 3D view of

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