Garnet SeeLevel ProSeries II 810-PS2, Руководство пользователя

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Page 8 810-PS2 Manual
T
he 810-PS2 gauge has been designed for maximum ease of
installation and servicing, and for the best operational features.
The anchor at the bottom of the tank provides a shock mount for
the float, and holds the float in place while the bar is removed so
no tank entry is required for sender bar replacement. If the new
sender bar is cut to the same length as the old, no re-calibration
is required.
The float is molded from polyethylene for high chemical resistance,
good esthetic appearance, and high durability due to the “give”
in the plastic. The light weight of the polyethylene allows the
float size to be minimized while allowing it to float on the lowest
density products.
The sender bar has no moving parts and is completely filled with
potting material to enhance reliability. The use of a digital rather
than analog sensing technique lowers power consumption to
permit battery operation, and ensures high accuracy with no drift
or degradation. To accommodate different tank sizes, the bar is
simply cut to length with a hacksaw, and the cut end sealed with a
cap to prevent moisture or product contamination. This way only
one size needs to be stocked, and a perfect fit is ensured. The
sender head is very low in profile to satisfy rollover requirements;
the maximum height is less than 5 inches above the top of the
tank so that it will not protrude above the spillway.
The single fiber optic cable connecting the sender head to the
display can be disconnected at both ends. There is approximately
10 times as much light as is required for operation available for
the fiber, so no special fiber end preparation is required. The fiber
ensures that even with faulty wiring into the display, no explosion
hazard can exist.
The display enclosure was designed to eliminate the need for an
external enclosure, thus saving cost and space. The hinged cover
has a magnetic latch which will not jam, and the hinge is very
simple with plastic and stainless steel components, for long life
and easy replacement. If alarms are not connected, the only entry
into the display enclosure is for the fiber cable, thus limiting the
opportunity for water to enter the box. The internal circuitry is also
protected against moisture with a protective coating. Along with
being battery operated and not requiring truck power to operate,
installation is simplified and reliability enhanced. The small size
CHAPTER 4 - UNIQUE FEATURES