DESCRIPTION
The
Seapoint Ultraviolet Fluorometer (SUVF) is a high-performance,
low power instrument for in situ measurement of fluorescent
materials including chromophoric
dissolved organic matter (CDOM), crude oil, and UV
fluorescent dyes. Its small size, very low power consumption,
high sensitivity, wide dynamic range, 6000 meter depth
capability, and open or pump-through sample volume options
provide the power and flexibility to operate in a wide
variety of conditions. The SUVF uses modulated ultraviolet LED
lamps and optical filter for excitation. The fluorescent light
signal passes through a blue emission filter and is detected by
a silicon photodiode. The low level signal is then processed
using synchronous demodulation circuitry which generates an
output voltage proportional to the amount of fluorescent light
received.
The SUVF may be operated with or without a pump. The sensing
volume may be left open to the surrounding water, or, with the
use of the supplied cap, can have water pumped through it. Two
control lines allow the user to set the range to one of four
options. These lines may be hardwired or microprocessor
controlled to provide a suitable range and resolution for a
given application. The sensor is easily interfaced with data
acquisition packages; a 5 ft. pigtail is supplied. Custom
configurations are available. |
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