User guide

28
Technical data
Type S020
6.4.8. K factors (in pulse/litre) for screw-ons
When the dimensions of your pipe are slightly different from dimensions D and s given in the table, recalculate the K factor using one
of the formulae in chap. 6.4.2.
If the measuring device does not automatically convert the K factor, use the following conversion formulae before setting the para-
meters of the device:
• K factor in pulse/US gallon = K factor in pulse/litre x 3.785
• K factor in pulse/UK gallon = K factor in pulse/litre x 4.546
Table 22: K factors, external diameters and theoretical cross-sections of screw-ons
Measuring device inserted 8020, 8024, 8025, 8026 8041, 8045
External diameters and theoretical
cross-sections
Material of the pipe
PVC PP / PE PVC PP / PE
D
PVC
[mm]
s
PVC
[mm]
D
PE/PP
[mm]
s
PE/PP
[mm]
DN
100 4,83 (L) 5,29 (L) 33,0 (L) 30,4 (L) 110 8,1 110 10
110 3,45 (L) - 44,7 (L) - 125 9,2 125 11,4
125 2,55 (L) 3,10 (L) 63,7 (L) 52,1 (L) 140 10,3 140 12,8
150 1,67 (L) 2,12 (L) 137 (L) 78,8 (L) 160 6,2 160 14,6
180 1,08 (L) 1,37 (L) 197 (L) 116 (L) 200 9,6 200 18,2
200 0,80 (L) 1,07 (L) 290 (L) 147 (L) 225 8,6 225 20,5
250 - 0,63 (L) - 347 (L) - - 280 25,5
300 - 0,42 (L) - 510 (L) - - 315 28,7
350 - 0,30 (L) - 705 (L) - - 355 32,3
400 - 0,23 (L) - 931 (L) - - 400 36,4
(L): long sensor version
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