In order to make sure to select the most appropriate type consult our service
team. If available, a short piece of the tube should be sent to our company.
Outer diameter
3 to 17 mm
Wall thickness
optimal 10 to 20 % of outer diameter
Material
Plastics, e.g. PVC, PE, silicon, PUR
Other materials only on request or after test
Features
Tube must be plane on the outside, no textile tube
Elasticity
Tube must be adaptable
4.3 Tube Standards
According to the tube diameter there are various models with a different channel width.
The type of sensor depends on the outer diameter, the flexibility as well as the wall
thickness of the tube.
The tube is put into the measuring cell without coupling gel.
There must be no liquid in the channel. An acoustic short circuit may
be caused due to the liquid. The function of the sensor is strongly disturbed.
Normally, after being put in, the tube is fixed firmly by a cover. Especially when using
very small tubes or tubes with a very low wall thickness (less than 10 % of the outer
diameter) it is necessary, that the cover presses the tube and keeps it firmly on the right
position.
Optionally, there are sensors without cover available. In case the tube is made of a
flexible material and it is suitable for the application, a cover is not mandatory.
The elasticity of the tube may be changing by an increased operating
temperature.
In case of a frequent changing of the tube (using disposables) we recommend a sensor
type with a snap-in cover.
VIEWEG
15
EN
Operating Manual Bubble Detector
