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pvc cone
Microprocessor-based technologies and a new physical design enable
the system to perform a wide variety of functions in service of
a larger audience of users. Besides the ability to perform customized
data gathering and processing of a large suite of sensors, the
system can rapidly disseminate that information via a multitude
of pathways.
Foremost is the critical need to accurately and reliably capture
water level measurements. Thus, the new system continues the tradition
of having primary and backup water level sensors. The primary
water level measurement is obtained from a downward looking acoustic
sensor. It sends a shock wave of acoustic energy down a half-inch
diameter PVC sounding tube and measures the travel time of the
reflected signal from a calibration reference point and from the
water surface. The calibration reference allows the controller
to adjust the measurements for variations in sound velocity due
to changes in temperature and humidity. The sensor controller
performs the necessary calculations to determine the distance
to the water surface. The sounding tube is mounted inside a 6-inch
diameter PVC protective well which has a symmetrical 2-inch diameter
double cone orifice. The protective well is more open to the local
dynamics than the traditional stilling well and thus does not
mechanically filter much of the wind waves and chop. In areas
of high velocity tidal currents and high energy sea swell and
waves, parallel plates are mounted below the orifice to reduce
the pull down effects. A schematic diagram of the new system is
presented below.
In addition to water levels, the new system has the capability
of handling up to 11 different ancillary oceanographic and meteorological
sensors. These include such environmental parameters as, wind
speed, direction and gust, water current speed and direction,
air and water temperature, barometric pressure, water conductivity,
dew point, rain fall and solar radiation.
 Please Contact Us to discuss your pvc cone
needs. You design it, we build it.
pvc
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