P
AGE
18
OF
25
20. Venturi Sampler Commissioning and Start-up
The check list below must be used to ensure that the installation has been properly carried out. Please
proceed through the check list in the given order.
The check list refers to the standard Venturi sampler.
Bolt the Venturi Sampler to a wall ideally within 1 meter of the BioTectors sample in port.
Venturi sampler cannot be exposed to the direct sunlight and needs to be protected from rain.
Connect the Venturi Sampler to earth (ground).
_____
_____
Connect the sample tube from the sample point to the Venturi Sampler using the supplied ½”
OD tube. It is important that this tube is installed so that it falls gradually to the sample point.
The tube should have no sharp bends, and should not rise above the level of the bottom of
the Venturi Sampler at any point.
The sample point should be installed using the typical sample point installation drawing (as
attached to the last page of this document) for guidance, or if supplied a site specific
installation drawing.
The photograph below shows the sample inlet connections on a typical 2-stream venturi
sampler.
_____
Stream 2
Stream 1
