Endress+Hauser Smartec CLD18, Руководство по эксплуатации

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Installation Smartec CLD18
12 Hauser
> 1 (3.3)
A0017691
 2 Orientation of conductivity sensors. Engineering unit: m (ft)
If the flow direction changes (after pipe bends), turbulence in the medium can result.
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Install the sensor at a distance of at least 1 m (3.3 ft) downstream from a pipe bend.
The product should flow along the hole of the sensor (see the arrows on the housing). The
symmetrical measuring channel allows flow in both directions.
In confined installation conditions, the walls affect the ionic
current in the liquid. This effect is offset by what is referred to
as the installation factor. The installation factor can be entered
in the transmitter for the measurement or the cell constant is
corrected by multiplying by the installation factor.
The value of the installation factor depends on the diameter
and the conductivity of the pipe nozzle as well as the distance a
between the sensor and the wall.
The installation factor can be disregarded (f = 1.00) if the
distance to the wall is sufficient (a > 20 mm, from DN 60).
If the distance to the wall is smaller, the installation factor
increases for electrically insulating pipes (f > 1) and decreases
for electrically conductive pipes (f < 1).
It can be measured using calibration solutions, or a close
approximation can be determined from the following diagram.
a
A0018962
 3 Installation of CLD18
a Wall distance