11
US
Example: dSt for window function
1
Volumetric flow quantity Q reaches 0.5% of VMR → dSt starts, output becomes active.
2
dSt elapsed, Q reached good range → output remains active.
3
Q above SP (leaves good range) → output is reset.
4
Q again below SP → output becomes active again.
5
Q below rP (leaves good range) → output is reset again.
6
Q reaches again 0.5 % of VMR → dSt starts, output becomes active.
7
dSt elapsed, Q has not reached good range → output is reset.
8 Q reaches good range, output becomes active�
5 Installation
5.1 Installation location
►
Install the unit so that the measuring pipe is always completely filled�
►
Arrange for inlet and outlet pipe lengths� Disturbances caused by bends, val-
ves, reductions, etc� are compensated for�
It applies in particular: no shut-off and control devices are allowed directly in
front of the unit�
S = disturbance; D = pipe diameter; F = flow direction