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Applications
The representative samples can be used for:
Chemical analysis
Biological- and bacteriological analysis
Thermal analysis (cooling water disposal)
Mineralogical analysis
To determine the measure of mud-and/or soil transport by water, relative to the direction of flow
Specifications
Size (L x W x H): 7 x 7 x 30 cm
Maximum sample depth: < 25 m
Point or profile sampling: Point
Power supply: Manual
Product material: Stainless steel
Rod or cable length: 25 m
Rod or cable operated: Cable
Sample specification: Undisturbed
Sample stored in: N/A
Sample volume: 1.25 l
Sampler position: Horizontal
Package size: 70 x 37 x 27 cm
Weight: 21.9 kg
Description
The Watertrap water sampler has been designed to take representative samples from running water up to a depth of approximately 25 metres. 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 also suitable for high current waters.
Method
The water sampler is lowered by the included hand winch fitted with a steel cable. The winch is attached to a telescopic arm; an attachment clip allows the unit to be fixed to the railing of a bridge or boat. The depth at which the sampler is located can be read from a depth counter. The spring-loaded valves are set open before the sampler is lowered and keep te valves in an open position.
As soon as the sampler is positioned at the right depth, the falling weight is released and slides down along the cable; at the end the weight is hitting the arms of the clamps, resulting in the closing of the downstream valve first, followed only a moment later by the upstream valve.
The valves have rubber seals to ensure a watertight enclosure of the sample during retrieval. By opening the valves, the sample can be discharged. By relocating the weights and adjusting the fins, it is possible to hang the sampler in any required position. 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
Altering the weight under the front of the stainless-steel cylinder
Set contains
The stainless-steel water sampler
Falling weight
Hand winch unit with 25 metres steel cable
Telescopic arm with fastening clip and depth counter
Transport case
Cleaning and maintenance accessories
Datasheet
