Technical Specifications
|
Parameters measurable: Phytoplankton concentration Photosynthetic efficiency Underwater irradiance (PAR) Temperature Submergence depth |
0.03 - 50 mg Chl m-3 (0.02 + 10%) 0 - 1.0 rel. un. (0.05) 0.03-1000 mE m-2 s-1
(0.02 + 10%) 0 - +30 oC (0.1 oC) 0 - 200 m
(0.5 m + 10%) |
|
Fluorometer: Probe flash
(energy/duration) Saturating actinic
flash (energy/duration) Delay time between saturating and
probe flashes Spectral range of the saturating
and probe flashes Spectral range of fluorescence
registration |
0.01 J / 0.01 ms 0.01 - 1 J
/ 0.01 ms 0.05 - 1.0 ms 400 - 550 nm > 680 nm |
|
Physical Characteristics: Submersible unit
(dimension/weight) Power supply unit
(dimensions/weight) Carrying box
(dimensions) Cable-rope
(length/weight) Cable-rope
(length/weight) |
sphere 250 mm / 9 kg 300 x 300 x 50 mm / 1 kg 300 x 300 x 450 mm 200 m / 40 kg 50 m / 12 kg |
|
Power: Power supply Power consumption |
220 V or 12 V 25 W |
System Description
The complete set of PrimProd fluorometer consists of the following mainframes: submersible probe, 12 DC on-board block power supply, IBM-compatible computer, connecting cables and cable-rope.
For
storage of device the special wooden box is used. Inside of box the board block
and the probe are fixed.
1.
Submersible probe. The design of the submersible probe
is adduced on Fig. 1. Probe consists of the internal cylindrical part (1), on
which the optical outline of device, and spherical hermetic body (2),
possessing plug on equator and tighten by two fly-wheels (3). Such design
provides the tightness, permitting at the same time easily to open the device.
In bottom half-sphere measuring cell of fluorometer is placed (4). It closed
from below by plug with light lock (5) and has inside four pulsing sources of
light (6) with focusing systems in center and gauges of temperature (7) and
depth (pressure) (8). In top half-sphere photoelectronic multiplier (9) for
registration of fluorescence signal, board of gauges (10), supply units PEM and
electronics (11), and also the interface of management and transmissions of
data (12) are placed. A hermoslot (13)
connecting cable with gauge of underwater radiation is located in top of
device.
Fig. 1. The
design of the submersible probe.
2. On-board
power block provides the necessary voltage (42 V) supply at the submersible
probe. The connection of on-board block is executed to current source of
alternating voltage ~220 V, or to accumulator ( + 12 V ).
3. The IBM-compatible computer can be used for
management of device.
Fig. 2. The
complete set of PrimProd fluorometer.