Levelflex M FMP43 with PROFIBUS PA
Installation
Hauser
19
3.3.3
Special instructions
When installing in tanks with agitator, observe the lateral loading capacity of rod probes:
• 10 Nm with 1.4435 / SS316L
• 16 Nm with Hasteloy C22 (on request).
The formula for calculating the bending torque M impacting on the probe:
with
c
w
: Friction factor
ρ
[kg/m
3
]: Density of the medium
v [m/s]: Velocity of the medium perpendicular to the probe rod
d [m]: Diameter of the probe rod (8 mm)
L [m]: Level
L
N
[m]: Probe length
L00-FMP43xxx-16-00-00-de-004
Calculation example
L00-FMP43xxx-16-00-00-xx-003
Friction factor [c
w]
0.9 (on the assumption of a turbulent
current (high Reynolds number ))
Density [
ρ
] in kg/m
3
1000 (e.g. water)
Probe diameter [d] in m
0.008
L = L
N
(worst case)
M = c ·
· v · d · L · (L − 0.5 ·L)
W
N
2
r
2
v
L
N
L
d
Bending torque [M] on rod probes
Probe length [
] in meters
L
N
v=0.5m/s
v=0.7m/s
v=1.0m/s
max.
bending
torque
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
4
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
Bending
[Nm]
torque
Summary of Contents for Levelflex M FMP43
Page 4: ...Brief overview Levelflex M FMP43 with PROFIBUS PA 4 Endress Hauser...
Page 104: ...Appendix Levelflex M FMP43 with PROFIBUS PA 104 Endress Hauser...
Page 106: ...Levelflex M FMP43 with PROFIBUS PA Index 106 Endress Hauser...
Page 108: ...www endress com worldwide BA358F 00 en 07 07 No 71041163 CCS FM SGML 6 0 ProMoDo 71041163...
