www.tek-trol.com
17
3.3.1.3
Spacing Between the Sensors
The distance between the upstream and the downstream sensor can be seen in window
M25. The window states the inner distance between the two sensors, which you should
stick to as accurately as possible. The information in M25, however, must only be
considered a coarse adjustment. The fine adjustment is carried out by arranging the
spacing so that the time constant in M90 is exactly 100%.
To ensure accurate measurement values, the following data must be entered:
•
The outer diameter of the pipe (M11)
•
Material thickness of the pipe (M12)
•
Material of the pipe (M14)
•
The liner of the pipe (M16)
•
Type of liquid (M20)
•
Type of sensors connected (M23)
•
The mounting method of sensors (M24)
•
Check the spacing in window M25 and fix the sensors accordingly.
•
During installation, ensure that the value of the time constant in M90 is 100 %,
that the signal strength is >700 and that the signal quality is >60.
3.3.2
Selection of Measurement Method
3.3.2.1
V-method Installation:
V-method installation is the most widely mode for daily measurement with pipe inner
diameters ranging from 15 mm to 400 mm (½" to
16”)
. It is also called reflective mode.
Fig 10: V-method Installation
