FOSSIL

ELECTRONIC LEVEL INDICATION

Aquarian electronic level products were specifically designed to meet the industry’s
growing needs and demand for a reliable, cost effective and versatile means of sensing
water levels in a variety of high and low pressure applications. By passing a ±5VDC
square wave through each probe and processing the resulting signal, a distinction
between steam and water is made, even in water conductivities as low as 0.5 micromho

The Aquarian 3000Mini

The Aquarian 3000Mini was developed to satisfy basic level
indication requirements for boiler drum, feedwater heaters and other liquid level applications. The Aquarian system consists of: the column with probes, the detection and verification unit (D&V) and the remote display for the control room. The electronic unit (D&V) is connected to 5 or more probes on the water column.
The number of probes can be selected and spaced to indicate liquid level through a desired operating range in a custom
manufactured water column to provide the most reliable indication
for any application. An individual relay is provided for every probe
level to provide versatility in selecting high/low or other system
alarm and trip points. A remote LED display panel, customized
for the number of probes and their locations is standard.
A local display mounted on the D&V door is optional.

The Aquarian 3000Visual is a 3000psi (207bar) ported water
level gauge that produces a red/green image to indicate the
water level in high-pressure boiler steam drums.
The ASME Boiler and Pressure Vessel Code states “ported
gages or reflex gages that use refraction of light to aid ready
determination of the liquid level, may omit the requirement
for overlapping sections.”
The solid state bi-color gauge iIlluminator and display
attach to the ported gauge to produce a red or green image
on the display. A red image indicates that steam is present
and a green image indicates that water is present. The red/green
image is produced by an array of solid-state LEDs and
precision lenses that focus the image through the gauge body
onto the display. The LEDs replace the unfocused incandescent
light bulb and colored glass that are currently used
in conventional bi-color illuminators.

Aquarian 650R Reflex Gauge

The Aquarian 650R Reflex Gauge is rated for 975psi (67bar) for
process applications, and 350psi (24bar) for steam applications.
It provides excellent visibility of liquid level. Light refracting grooves
in the glass cause the liquid to appear black and steam to appear
white. The high contrast between water and vapor allows this style
gauge to be stacked on top of one another without concern for
blind spots between gauges. Recessed gasket surfaces in both
the cover and body facilitate glass and gasket alignment and also
h elp prevent gasket blowout. Belleville spring washers maintain
constant gasket loading under thermal and pressure cycles

Aquarian 1000T Transparent Flat Glass Gauge

The Aquarian 1000T Transparent Flat Glass Gauge is rated for
1000psi (69bar) and is structurally designed with a thicker and
wider body to resist deflection. The design meets the ASME
Boiler and Pressure Vessel Code, which no longer permits the
use of cross webbing. For l onger ranges of visibility, this style
gauge must have a minimum of 1” for overlapping sections.
Belleville spring washers maintain constant gasket loading under
thermal and pressure cycles. Precision tempered and ground
Borosilicate gl ass provides high strength and clear visibility,
while a mica shield protects the glass from the effects
of erosion for an extended service life.

The Aquarian Single Probe Alarm
Module and Aquarian 1000Plus

The Single Probe Alarm Module (SPAM) is an accurate and reliable
instrument that provides positive indication of steam or water in
high temperature and pressure applications. The SPAM measures
resistance and reports the presence of either steam or water, based
on fluid conductivity. The probe can be mounted in a column or a
1-½” tee. The Swagelok® metal to metal seal assures a leak proof
installation with no moving parts.

The Aquarian 1000Plus is configured with 1 to 4 independent
probe channels, redundant power supplies, continuity, level
fault monitoring and optional 4-20mA output. Each level relay
output is rated at 5A which enables this system to serve as
a trip, alarm or on-off control device.