Soil & Sediment Sampling

   
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Visibility Disc According To Secchi
Eijkelkamp 13.50 Visibility Disc According To Secchi

Product Features
 
  • Eijkelkamp 13.50 Visibility Disc According To Secchi is simple, although not very accurate, means of determining the visibility depth.
  • The visibility disc is lowered into the water with a wire. When the disc is no longer visible in the water, a reading of the depth is made by means of the marks on the rope.
  • The disc is lowered another 0.5 meter and is pulled up slowly. The second reading is done when the disc becomes visible. By taking the arithmetic mean from both readings the visibility depth is determined.






Water Sampler ‘Watertrap’
Eijkelkamp 12.02 Water Sampler ‘Watertrap’

Product Features
 
  • Eijkelkamp 12.02 Water Sampler ‘Watertrap’ designed to take representative samples from running water up to a depth of approx. 25 meter.
  • Samples are taken with the stainless steel device by catching part of a horizontal moving column at a certain moment at a certain depth.
  • The sampler is lowered by means of a hand winch fitted with a steel cable. The winch is fixed to a telescopic arm. The fastening clip of the telescopic arm allows fixing of the arm on the railing of a bridge or a boat. The depth at which the sampler is located can be read from a depth counter.
  • The valves are opened before the sampler is lowered. The valves are kept in an open position by the falling clamps.
  • As soon as the sampler is at the right depth the falling weight is allowed to slide down along the cable, thus thrusting the long falling clamp downwards, resulting in the closing of the downstream valve, only a moment later followed by the other clamp and the upstream valve.
  • Rubber rings take care of the watertight sealing of the body with the sample, during retrieval. The sample can be discharged by opening the valves.
  • By relocating the weights and adjusting the fins, it is possible to hang the sampler in any required position relative to the direction of flow.The standard set comprises the stainless steel water sampler, a falling weight, a hand winch and a telescopic arm with fastening clip and depth counter. Whole is packaged in a transport case.
  • For correct sampling it is important that the water sampler is suspended in balance in the water. Bringing the sampler in balance can be achieved by adjusting the horizontal tail fin, sliding the tail fin rods through the guiding tubes and altering the weight under the front of the stainless steel cylinder.






Suspended Load Sampler, Delft Bottle Type
Eijkelkamp 04.31 Suspended Load Sampler, Delft Bottle Type

Product Features
 
  • Eijkelkamp 04.31 Suspended Load Sampler, Delft Bottle Type used to measure suspended sediment transport in rivers and other water courses, from the surface down to 0.1 m above the river bottom.
  • The sediment containing water flows through a bottle shaped sampler.
  • The shape of this sampling body induces a low pressure at the rear face in such a way, that the water enters the nozzle of the sampler with almost the same velocity as the undisturbed flow.
  • The sharp decrease of the velocity in the wide sampling chambers causes the sediment material to settle there.
  • The sampler can be used in two ways.
  • First: Suspended on a cable for all depths from the surface to 0.5 m above the bottom. A tail fin keeps the nozzle in up-stream direction.
  • Second: Standing in a frame on the bottom for distances of 10, 20, 30, 40 and 50 cm from the bottom. The set comprises a sampler, the frame, a number of nozzles and measuring glasses. Because of the flow-through principle a large volume of water is sampled.






Bed-Load Transport Meter Arnhem Type
Eijkelkamp 04.32 Bed-Load Transport Meter Arnhem Type

Product Features
 
  • Eijkelkamp 04.32 Bed-Load Transport Meter Arnhem Type used to measure bed-load of coarse sand and fine gravel in rivers and other water- courses.
  • The streamlined sampler is mounted in a frame and consists of a mouth followed by a basket of fine wire meshing (width of the mesh 300 mu).
  • The sharp decrease of the velocity in the wide sampling chambers causes the sediment material to settle there.
  • A tail fin mounted on the frame keeps the sampler in up-stream direction.
  • The results of the measurements are influenced by the shape of the bed (ridges, dunes, flat beds, etc.).
  • For a successful measurement knowledge of the relief of the bed is essential. The sampler can be discharged on board using the sample trough.
  • The set comprises: the sampler, the bed-load transport meter frame with stabilising tail fin and lever and the sample trough.






Sludge Blanket Detector
Eijkelkamp 13.49 Sludge Blanket Detector

Product Features
 
  • Determines the degree of turbidity of fluids by means of the transmission method with a light source and photocell.
  • The less red light reaches the photocell the more turbid the fluid is.
  • Eijkelkamp 13.49 Sludge Blanket Detector available complete with sensor, cable, a weather resistant carry holster with shoulder strap and battery charger.
  • The robust sensor has a sensitivity of between 0 and 5000 ppm.
  • The graphic display has a resolution of 20 blocks divided over three colors in order to quickly read the degree of turbidity of the layer the probe penetrates at that moment.
  • If the turbid water layers are reached an audio signal can be heard. This audio signal is pulsing in less turbid water and continuous in very turbid water.
  • The cable has a marking every 50 cm in order to determine the depth. The standard cable length is 7 meter (can be extended optionally up to 50 meter).