The collection of sinking particles is an essential part of many marine investigations. Such particles offer insight into the migration of trace elements and nutrients, ancient ocean circulation patterns and many other parameters. To obtain this data, an instrument is required to collect samples while remaining protected from both high-pressure environments and corrosion risks often for long periods of time.

To meet this need, K.U.M. developed the Sediment Trap. Built to the highest
standards to ensure the optimal collection of particles in the water column,
the Sediment Trap can be deployed in both salt and fresh water and up to depths
of 10,000m.

The hexagonal open framework reduces interfering current resistance and
enables sinking sediment particles to be collected. Particles are funnelled via a special hexagonal lattice-grid baffle, sealed in special paper and then collected
into sample bottles.

The bottles are held within a sample collection turntable where they can later
be analysed to determine biological, chemical and mineralogical compositions.
The duration of sample collection can be programmed via a cable or Wi-Fi
connection from one minute to 24 months.

Extra care has been taken to ensure there is no contamination of the probes
collected. All parts are made from GRP resin and the funnel is carefully polished,
ensuring that particles do not stick to the funnel wall and no interfering chemicals from the plastic can contaminate the probe samples. Each probe is individually sealed by its own spring to ensure that, even after long investigation periods,
the probes remain pure.

  
Sediment Trap
  • Subsea collection of sinking particles
  • Hexagonal shape allows connection of several traps to cover wider area
  • Hexagonal lattice grid stabilizes current and reduces wash out
  • Sleep mode
SEDIMENT TRAP
Product K/MT 236 K/MT 320 K/MT 234 K/MT 322 
Collection area (m2) 0.25 0.5 0.5 0.5
Sample bottles 14 41 21 21
Sample bottle volume (ml) 400 400 400 400
Funnel slope angle (°) 34 34 34 34
Connection interface  RS 232  RS 232  RS 232  RS 232 
Power supply  9V DC (6 Alkaline 1.5V batteries) 9V DC (6 Alkaline 1.5V batteries) 9V DC (6 Alkaline 1.5V batteries) 9V DC (6 Alkaline 1.5V batteries)
Operational depth (m) Up to 3000 Up to 6000 Up to 6000 Up to 10000
Operational temperature range -10°C to +40°C -10°C to +40°C -10°C to +40°C -10°C to +40°C
Operational time  Up to 24 months  Up to 24 months  Up to 24 months  Up to 24 months 
Total height (mm) 1480 2230 1900 1900
Width (mm) 910 1146 1079 1079
Funnel height (mm) 940 1313 1313 1313
Funnel Ø (mm) 565 800 800 800
Weight (kg) 53 (air), 38 (water) 131 (air), 62 (water) 98 (air), 42 (water) 100 (air), 45 (water) 
Attachments  – Single side suspension– 3 point suspension (optional) – Single side suspension– 3 point suspension (optional) – Single side suspension– 3 point suspension (optional) – Single side suspension– 3 point suspension (optional)

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