52 FLOWSIC100 Flare · Addendum to Operating Instructions · 8025365/V1-0/2020-05 · © SICK Engineering GmbH
Installation
4.8.1.2
Calculating the wetted part length for the probe version
Probe version: 1-path measurement
Fig. 30 Formulas for calculation of the wetted part length wL for the probe version
wL
Probe
NozzleLength 2 GasketThickness LengthBallValve
WallThickness
sin
----------------------------------------
120 79mm
sin
---------------------------
206+ 4mm FittingAdjust–+ + + +=
Installation without ball valve (non-retractable)
Installation with ball valve (retractable)
wL
Probe
NozzleLength GasketThickness
WallThickness
sin
----------------------------------------
120 79mm
sin
---------------------------
206+ + 4mm FittingAdjust–+ +=
Example for 75°
wL
Probe
NozzleLength 2 GasketThickness LengthBallValve
WallT
hickness
75 sin
----------------------------------------
120 79mm
75 sin
---------------------------
206+ 4mm FittingAdjust–+ + + +=
wL
Probe
NozzleLength 2 GasketThickness LengthBallValve
WallThickness
0 966
----------------------------------------
330 45mm+ + + +=
Example for 75°
wL
Probe
NozzleLength GasketThickness
WallThickness
75 sin
----------------------------------------
120 79mm
75 sin
---------------------------
206+ + 4mm Fitti
ngAdjust–+ +=
wL
Probe
NozzleLength GasketThickness
WallThickness
0 966
----------------------------------------
330+ 45mm+ +=
Simplified:
Simplified:
β [°] = Nominal nozzle installation angle
NozzleLength [mm] = Nozzle length D1 or D2; dimension on nozzle installation tool
GasketThickness [mm] = Dimension of gasket thickness
LengthBallValve [mm] = Length of ball valve, measure from gasket surface to gasket surface
WallThickness [mm] = Wall thickness of pipe
120,79 mm = Probe 1-path distance inner pipe wall to first probe A
82,189 mm = Probe 2-path distance inner pipe wall to first probe A
206,4 mm = Distance probe A to end of probe
330,45 mm = Probe 1-path wetted part length in pipe
290,48 mm = Probe 2-path wetted part length in pipe
0,966 = sin(75°) – Nominal nozzle installation angle
FittingAdjust [mm] = 1 mm Compensation when tightening the self-cutting ring fitting (self-cutting ring fitting displaces
the duct probe by 1 mm when tightened)