YZ Systems, Inc. • 3101 Pollok Drive • Conroe, Texas • USA • 77303 • P: 936.788.5593 • F: 936.788.5720
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NJEX 7300L ver.09042003
SSSSS
ECTION
ECTION
ECTION
ECTION
ECTION
10:
10:
10:
10:
10: M
M
M
M
M
ECHANICAL
ECHANICAL
ECHANICAL
ECHANICAL
ECHANICAL
S
S
S
S
S
Y
YY
Y
YSTEM
STEM
STEM
STEM
STEM
Verometer
The purpose of the Verometer, figure 202, is to act as an
odorant meter, verifying the amount of injected odorant.
The Verometer contains a level monitoring device
allowing the N-300 controller to compare the actual
amount of odorant injected to the displacement setting
of the pump. The N-300 also controls filling the Verom-
eter and activating the Verometer alarm functions based
on input from the level monitoring device.
Odorant enters the Verometer from the fill valve. Odor-
ant exits the Verometer by passing through a second
filter element on its way to the pump. The filter element
is held in place by the filter plug located at the bottom of
the Verometer.
The upper portion of the Verometer, above the odorant
fluid level, is connected to the expansion tank by
stainless steel tubing and the odorant discharge mani-
fold. The purposes for this configuration are:
1. The Verometer / expansion tank connection pro-
vides a closed loop system which prevents odorant
escape into the atmosphere.
2. As the Verometer is filled, pressure builds within the
closed Verometer / expansion tank system. The
additional volume provided by the expansion tank
prevents the accumulating pressure in the
Verometer from equaling the blanket gas pressure
in the odorant storage tank. This ensures an
uninterrupted flow of odorant from the storage tank
to the Verometer.
Figure 202