Schmidt SS 20.031 Prise En Main Rapide page 27

Programming the consumption display module for other values of the
internal tube diameter
If the internal diameter of the measuring line segment is not included in the
programming table in the outline instructions, then the required programming
value can be calculated:
☛
select the row with the nearest internal tube diameter from the program-
ming table
☛
determine the conversion factor k from the quadratic ratio of the internal
tube diameters in accordance with formula (1)
☛
calculate the programming value S
☛
calculate the programming value I
☛
set the program parameters according to the calculated values S
D
(
(1) k =
D
(2) S = S
KR
I
M
(3) I =
MR
k
D = internal tube diameter according to table
T
D = required internal tube diameter
R
S = S value according to table
K K
S = S value for required internal tube diameter
KR K
I = I value according to table
M M
I = I value for required internal tube diameter
MR M
Example:
Measuring range (w
The tube has an internal diameter of D
table is D = 100.8 mm with S
T
The conversion factor according to formula (1) is: k = 1.0645.
Using formulas (2) and (3) the result is: S
2
R
)
T
* k
K
) 0...60m/s
N
= 0.0038 and I
K
in accordance with formula (2)
KR
in accordance with formula (3)
MR
= 104 mm. The nearest value from the
R
= 389.65.
M
= 0.0040 and I
KR
27
and I
KR
= 366.04
MR
MR