Siargo AM1000 Series, User Manual, Page: 10 / 25

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Figure 4-1. Preparation for the insertion fixture.
Make sure there is no debris or excessive particles left in the pipe during the preparation of
the product fixtures on the pipe.
Refer to the graphs below, per OIML R137 recommendations, the upstream of the meter
should have a 20xDN straight pipe length, and downstream should have a 5xDN straight pipe
length.
Figure 4-2. Installation with correct upstream and downstream space.
Figure 4-3. Insertion probe length calculation.
!! Correct installation:
20xDN upstream and
5xDN downstream.
!! Incorrect installation :
insufficient straight pipe
length
L = 1/8 D + H + B +23
where D is the flow channel diameter
H is the flow channel wall thickness
B is the fixture base height.