5
Installation
2.3 Height adjustment calculation
Calculate the adjustment height
A
for DP490 (or
AA
for the DP525) as follows:
A
( for DP490 ) = 175mm ( 6.9") - ( B + C + D )
AA
( for DP525 ) = 420mm (16.5") - ( B + C + D )
Where :
B
= Distance between the top of the pipe & the top of the hex adaptor.
C
= Pipe wall thickness
D
= Insertion depth ( pipe ID ÷ 8 )
Examples of insertion depth D
:
For 40mm pipe ID (
D=
5.0 mm )
For 50mm pipe ID (
D=
6.25 mm )
For 100mm pipe ID (
D=
12.5 mm )
For 400mm pipe ID (
D=
50.0 mm )
Turn the height adjustment nuts (1) as required so that the distance between the top of the
hex adaptor (2) and the top of the positioning collar (3) equals your calculated distance
A
(for
DP490)
or
AA
for model DP525. Retighten the height adjustment nuts (1).
2.4 Flow direction orientation
The unit is bi-directional however the paddle must be aligned with the direction of flow.
Using a 2mm hex key (Allen key), unlock the locking screw located on the positioning collar
(3) then insert the hex key (as a lever) in the body rotating hole located above the collar, turn
the body until the alignment slot is parallel with the direction of pipe. Retighten the locking
screw.
D
3
2
A (AA)
B
C
LOCK
C
1
ALIGNMENT SLOT TO
PARRALLEL PIPE
Summary of Contents for 490
Page 1: ...INSTRUCTION MANUAL BI DIRECTIONAL INSERTION METER LOCK ...
Page 18: ...NOTES ...
Page 19: ...NOTES ...