SICK FLOWSIC100 Flare, Руководство по эксплуатации

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96 FLOWSIC100 Flare · Operating Instructions · 8013344/11L2/V 2-5/2018-10 · © SICK Engineering GmbH
Assembly and Installation
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3.3.1.4
Determine path angle and path length
Exact values for path angle and length must calculated using the geometric data to keep
measuring inaccuracy as low as possible (
→ Fig. 43 , → pg. 97, Fig. 44 ). Enter these values in
the device as parameters during start-up → pg. 167, § 4.2.2 (.).
Cross-duct versions
Fig. 43 for non-retractable sender/receiver units
A software to perform the geometry calculations can be found on the Product
CD.
Path angle for exact nozzle assembly 77.5 °
d = Off-center probes distance = 4.9 mm (manufacturer's specification)
U = Pipeline circumference at assembly location
S = Seal thickness = 4 mm
NL = Probe nominal length (manufacturer's specification)
D1, D2 = effective nozzle length ( → pg. 93, Fig. 42 )
a = Nozzle offset (
→
pg. 86, § 3.3.1.1 )
f = 1 for 1-path measurements, 0.8 for 2-path measurements
L a 2 d • – ( )
2
U
π
---- D1 D2 2 S • 2 NL • – + + +
 
 
2
+ =
α
U
π
---- 0 8 , •
D1 D2 2 S
•
2 NL
•
– + + +
a 2 d
•
–
-----------------------------------------------------------------------------------------
 
 
 
 
atan =
L a 2 d • – ( )
2
U
π
---- f • D1 D2 2 S • 2 NL • – + + +
 
 
2
+ =
α
U
π
---- f •
D1 D2 2 S
•
2 NL
•
– + + +
a 2 d
•
–
----------------------------------------------------------------------------------
 
 
 
 
atan =
D1 D2
L
α
a
FLSE100-EXS FLSE100-EX, FLSE100-EXRE
a
D1
L
D2
NL
b
α
β
1
β
2
Setpoint value for
β
1 and
β
2 = 75 °
k
L b
2
k
2
+ =
α
k
b
---
 
 
atan =
b a NL D1 – S – ( ) β 1 cos • – NL D2 – S – ( ) β 2 cos • – =
k
U
π
---- f
• NL D1 – S – ( ) β 1 sin • – NL D2 – S – ( ) β 2 sin • – =