Pag. 18 of 52
- Pipe Specifications
8. PIPE SPECIFICATIONS
8.1 Outside pipe diameter
In the event that an appropriate instrument to measure the pipe outside diameter of the is not available (programming
in
M11
), proceed as follows:
- use a rope or paper tape or sheet
- wrap the pipe with rope or paper tape or sheet and mark the circumference point
- measure the length corresponding to the pipe circumference
- enter the measured value to “
Pipe Outer Perimeter
” menu (
M10
),
DIMPU
will automatically calculate the correct
pipe diameter value
8.2 Pipe thickness
Value measured on site using an appropriate tool (caliper, ecc.), or from the technical data of the hydraulic interested
(programming in
M12
). In the presence of tubes without inner lining, is possible to use the
DIMPU
thickness gauge.
8.3 Pipe material
Value detectable on site, or from the technical data of the hydraulic interested (programming in
M14
)
8.4 Materiale del rivestimento interno del tubo
Value detectable on site, or from the technical data of the hydraulic interested (programming in
M15
)
8.5 Spessore del rivestimento interno del tubo
Value measured on site using an appropriate tool (caliper, ecc.), or from the technical data of the hydraulic interested
(programming in
M16
).
Fig. 33
7.7.4 -
Time ratio between the Measured Total Transit Time and the Calculated Time - M91
The value should be in the range 100±3%. If the value exceeds this range check:
(1) That the parameters have been entered correctly
(2) That the distance between the two transducers is the same as indicated in the menu
M25
(3) That the transducers are installed in the right direction.
(4) That the positioning point was chosen in an appropriate manner and that the pipe has not changed shape.
(5) Inside the pipe there are no deposits.
