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Seapoint Fluorescein
Fluorometer
Download pdf
Datasheet or
User Manual |
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FEATURES
• Very low power
requirements
• Can be
used in pumped or open deployments
• Small size
• 6000
m depth capability
• Good
ambient light rejection
• Linear
output with
Fluorescein concentration
• Four
programmable ranges
• Low
temperature coefficient
• Low offset
voltage does not require adjustment
• Pin
compatible with other
Seapoint Sensors
• Interfaces
easily with data acquisition systems
• Rugged,
corrosion-free materials
APPLICATIONS
•
Profiling, Moored, Towed, or
In-Line Measurements
• Dye
Trace Studies
•
Mixing and Dispersion Studies
• Leak
and Spill Detection
•
Flow Measurement
•
Reverse Osmosis Recovery
Measurement
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DESCRIPTION
The
Seapoint Fluorescein Fluorometer (SFF) is a high-performance, low
power instrument for in situ measurements of Fluorescein. 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 measure Fluorescein in a wide variety of
conditions. The SFF uses modulated green LED lamps and a
narrow-band excitation filter to excite Fluorescein. The
fluorescent light emitted by the Fluorescein passes through an
orange 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 Fluorescein concentration. The SFF 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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SPECIFICATIONS |
• Power
Requirements:
• Output
• Output Time
Constant
•
Power-up
Transient Period
•
Excitation Wavelength
•
Emission Wavelength
•
Sensing Volume
•
Minimum Detectable Level
• Temperature Coefficient
• Depth
Capability
• Weight (dry)
• Operating Temperature
• Material
• Underwater Connector |
8-20 VDC, 15mA avg., 27mA pk.
0-5.0 VDC
0.1 sec.
< 1 sec.
475
nm CWL, 30 nm FWHM
530
nm CWL, 30 nm FWHM
340 mm3
0.02 µg/l
Gain
30x
10x
3x
1x |
Sensitivity, V/µg/l
1.0
0.33
0.1
0.033 |
Range,
µg/l
5
15
50
150 |
< 0.3%/°C
6000 m (19,685 ft)
1000 g (2.2 lbs)
0°C to 65°C (32°F to 149°F)
Rigid polyurethane
Impulse AG-306/206 (others available on request) |
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