Xylem F410 VARIABLE AREA FLOWMETERS - Manual (Page 2)

Pressure Temperature and
Pressure and temperature limits are inversely proportional. At the
maximum suggested pressure the temperature should approach 70°F /
21.1°C; at the maximum suggested temperature the pressure should
approach zero psi. We cannot guarantee our flowmeters will not be
damaged either at or below the suggested limits simply because of many
factors which influence meter integrity; stress resulting from meter
misalignment, damage due to excessive vibration and/or deterioration
caused by contact with certain chemicals as well as direct sunlight.
These situations and others tend to reduce the strength of the materials
from which the meters are manufactured.
Flowmeters are tested and calibrated for water or air only.
Although meters may be suitable for other chemicals, Blue-White
cannot guarantee their suitability. It is the responsibility of the user
to determine the suitability of the flowmeter in their application.
Application Note
Temperature
PSIg / BAR
130°F / 54.4°C
120°F / 48.9°C
110°F / 43.3°C
100°F / 37.8°C
90°F / 32.2°C
140°F / 60°C
80°F / 26.7°C
70°F / 21.1°C
0 / 0 50 / 3.5 100 / 6.9 150 / 10.3
150°F / 65.6°C
Temperature vs. Pressure
Blue-White
Industries, Ltd.
R
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Floor
Ceiling Please use the following steps to guide
you through the installation.
1. The flowmeter must be installed in an
exact vertical plane to ensure
accuracy.
2. Use Teflon® tape (or similar) on all pipe
threads. Acrylic and other exotic
plastics cannot tolerate PVC
Glue and/or pipe dope. Even
fumes can cause crazing. If you
are installing your flowmeter to a
glued pipe installation, install the
flowmeter after all glued fittings
are dried and lines are purged of
all fumes. Never hold the meter
with pliers or like tools. DO NOT OVER-TIGHTEN!
3. Wall, floor and ceiling mounts are to be carefully aligned and sturdy. Wall, floor
and ceiling supports are recommended as needed. This is to maintain
pipe alignment and to prevent vibration.
4. Valves - Avoid a system that will impose a sudden burst of flow to the
meter. Such a burst will cause the float to impact the float stop with
destructive force which may damage the flowmeter. Solenoid valves, or
other quick opening valves cannot be used unless meter is protected
against sudden bursts of flow. (If necessary a surge chamber should be
installed. This will also be useful in high pressure start-up situations)
The flowmeter is not warrantied against this type of damage.
5. Maximum working pressure not to exceed recommended psi at fluid tempera-
ture (see Temperature Vs. Pressure chart).
Caution: Follow these steps to avoid
failure
Danger: Wear eye protection when
installing or removing the flowmeter.
Installation Guideline