LQ500
8
■
Installation Precautions
(1) Choose a place that is free of as much vibrations and
corrosive gasses as possible, and has ample space
for maintenance.
(2) Secure maintenance space around the converter and
detector RF section. (Refer to Figure 5)
(3) In the case of outdoor installation, provide covering
against sun and rain.
(4) It is recommended that the converter be installed
about 1.5m (the position of windows) from the
floor. The display is on the front panel of the
density/%TS meter. Install the converter in a
location and orientation easy to see this display.
(5) Do not install the meter in a place where there is a
possibility of leakage of flammable or explosive gas.
(6) Do not install the meter in any of the following
places:
•
A place where condensation due to a sudden
temperature change occurs.
•
A place where extreme low or high
temperatures occur outside the specification
range.
•
A place near the equipment generating strong
radio waves or electric fields.
(7) Install the meter in a place where air bubbles are not
generated, where pipe is always full of fluid, and
sedimentation and accumulation of solid matter do
not occur.
(8) Install the meter in a place where density
distribution is uniform. If the distribution inside the
pipe is uneven, manual analysis data and the
indicated value of the density meter may not show
the same value.
(9) Ensure that the flow rate of the fluid to be measured
is 0.6m/s or more.
(10) Make sure the upstream and downstream pipes
have enough strength to hold the density meter. If it
is not possible, provide a supporting base to hold the
density meter.
(11) Wetted materials of Detector spool pipe: SCS14A
316L, Measuring window: Polyetheretherketone,
O-ring: Silicon rubber, Liquid temperature sensor:
SUS316L. Install the meter in a place where
measuring liquid or environment does not corrode
these materials.
(12) The Density meters converter and detector spool
piece are provided in matched sets. Install making
sure serial number of each converter and detector
combination read the same. If the converter is
installed with a different detector, density
measurement may not be performed correctly.
(13) If the density changes rapidly (less than 1second),
the LQ500 may not measure accurately. The range
of measurable density (less than 1 second)
(c = 1.000)
Meter Size
50
80
100
150
200
250
300
Density [% TS]
16.8 10.5
8.4
5.6
4.2
3.4
2.8
500 (19.7”)
6
0
0
(
2
3
.6
”)
Maintenance
space
Back
Front
Detector
Converter
RF part
A 500 mm (19.7”) maintenance
space is also needed above unit.
500 (19.7”)
6
0
0
(
2
3
.6
”)
6
0
0
(
2
3
.6
”)
500 (19.7”)
Maintenance
space
Unit: mm (inch)
Figure 5. Clearance space
■
Piping Precautions
(1) Install the meter in a place where density
distribution is uniform. If the density
distribution in the density meter pipe is
uneven, manually obtained analysis value and
the density meter indicated value may be
different.
(2) Install the density meter in a location where the
material to be measured flows and fills inside the
detector pipe and bubbles do not remain. If the
material to be measured does not fill the pipe or
bubbles remain, a measurement error occurs or
the density indication fluctuates. If there is a
possibility of such a condition, we recommend
you to avoid installing the density meter on the
suction side of a pump and instead install it on
the pump discharge side.
(3) Avoid such a location where the measured matter
will settle and build up on the bottom of the
density meter.
(4) Avoid locations which will allow bubbles to
move into the pipe line.
(5) We recommend that the density meter should be
installed to a vertical piping system. Horizontal
installation are also possible with the same
performance. Vertical installation must be
recommended if the following conditions exist:
a) Bubbles may stay in the pipe.
b) Slow flow speed or other factors may cause
the measured matter to sink or float
substantially making the distribution of the
measured-matter density uneven in the pipe.
c) The main pipe has been enlarged thus using
the density meter of a diameter greater than
that of the main pipe.
(6) When installing on the horizontal piping, make
sure that RF section must be on the top for
purposes of maintenance and performance
assurance (in other words, so that the paired
applicator sections are placed directly side by
side).
(7) This density meter does not distinguish between
the upstream side and the downstream side.
Neither does it require a straight tube length.
Install it in a direction that will make
maintenance easy.
(8) When you anticipate a marginal error between
the side-to-side dimensions of this density meter
and the installation space of the piping line,
