WP2/WP3 Closing Net

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Small oceanographic closing net for vertical operations

 

About

Based on the design of the UNESCO Working Party 2, the WP2 and WP3 Closing Net are a vertical plankton nets with messenger operated closing mechanism. A 57 cm / 113cm diameter stainless steel ring with a 2.6 / 3.0 meter long net bag (default 200µm, or as per choice) is operated in conjunction with a heavy net bucket frame for high towing rope speed during descent.

For easy retrieval the sample is concentrated inside a removable plastic net bucket with side window (covered with sieve gauze). The open net is brought to the greatest scheduled depth. During ascent the net can be closed in the intended depth by strangulating the net bag below the net ring. This allows for sampling defined depth layers.

The WP2/WP3 Closing Net can be used in conjunction with one Mechanical Flow Meter with back-run stop for measurements of filtered water volume.

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Description

Spare Parts & Accessories

Spare Net Part

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Spare Net Part

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Category:

Messenger-Operated Closing Mechanism

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including messenger 800 g and closing rope

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Messenger

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for ropes up to 10mm. Weight: 800g

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Spare Plastic Net Bucket

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Consisting of:
a) Fixing Ring with over centre fasteners for attaching to the end of a net
b) PVC-Net Bucket with side window, covered with sieve gauze

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Category:

Mechanical Flow Meter

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with back-run stop for counting the amount
of water passing through the net

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TECHNICAL DATA
MaterialNet ring and net bucket frame: Stainless steel
Closing mechanism: Powder-coated and nickel-plated brass
Net bag: MOnyl
Net bucket: PVC
DimensionsWP2 - 57 cm x 300 cm (dia. x l)
WP3 - 113cm x 340 cm (dia. x l)
WeightWP2 - 28 kg
WP3 - 34 kg
Mouth openingWP2- 57 cm dia./0.255 m²
WP3 -113 cm dia./ 1m²
Mesh size200 µm (or as per choice between 100 and 1000 µm)
ORDERING INFORMATION
Products
438 515WP2 Closing Net
1. Messenger-operated closing mechanism,
including messenger 800 g and closing rope

2. Bridle of Nylon rope with thimble and
shackle

3.57cm Net ring of stainless steel with loops for
bridle and bucket ropes, with Nylon webbing
and zip fastener.

4. Net Part, consisting of:
a) Net part, cylindrical, with zip fastener and
loops for the closing rope, length 95 cm,
200 µm
b) Net part, conical, length 165 cm,
200 µm

5. Vertical Net Bucket consisting of:
a) Fixing Ring with over centre fasteners
b) PVC Net Bucket with side window covered
with sieve gauze
c) Net Bucket Frame for vertical operation
438 525WP3 Closing Net
1. Messenger-operated closing mechanism,
including messenger 800 g and closing rope

2. Bridle of Nylon rope with thimble and
shackle

3.100cm Net ring of stainless steel with loops for
bridle and bucket ropes, with Nylon webbing
and zip fastener.

4. Net Part, consisting of:
a) Net part, cylindrical, with zip fastener and
loops for the closing rope, length 100 cm,
200 µm
b) Net part, conical, length 200 cm,
200 µm

5. Vertical Net Bucket consisting of:
a) Fixing Ring with over centre fasteners
b) PVC Net Bucket with side window covered
with sieve gauze
c) Net Bucket Frame for vertical operation
Accessories
438 115Mechanical Flow Meter with back-run stop
for counting the amount of water passing
through the net
Spare parts
438 517Spare Net Part WP2,
200 µm (or as per choice between
100 and 1000 µm)
438 527Spare Net Part WP3,
200 µm (or as per choice between
100 and 1000 µm)
438 520Messenger-operated closing mechanism,
including messenger 800 g and closing rope
440 003Messenger, for ropes up to 10 mm, 800g
438 150Spare Net Bucket with fixing ring, 200 µm (or as per choice
between 100 and 1000 µm)