G16 Smoke Density Monitor
Ver.2.4 – Revision March 2022 15
5.2 Standard Installation
The Monitoring Unit can be configured with up to two sets of transceiver/reflector units.
The installation of each monitoring point is similar to each other. Figure 5-1 illustrates the
installation of a system with only one transceiver/reflector unit.
The transceiver and reflector are to be aligned opposite each other in such way that the
light beam from the transceiver has an unrestricted path to the reflector. See Figure 4-5 a
beam illustration when correctly installed.
For accurate measurement, it is important to place the transceiver and the reflector at a
straight section of the duct where the flow is laminar. This means that there should be a
distance of at least three duct diameters to the nearest upstream bend and a distance of at
least one duct diameter to the nearest downstream bend and minimum 10 duct diameters
to the engine, turbocharger or boiler
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