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Technical data
v (ft/s)
v (m/s)
135
40
120
35
105
30
90
25
75
20
60
15
45
10
30
5
15
0
0
0
0
16
Permitted flow velocity
A
Water
B
Air
L
Insertion length, during flow
v
Flow velocity
The permitted flow velocity is the minimum defined by the resonance velocity (resonance
distance 80%) and stress or buckling caused by flow, which would lead to failure of the
thermometer tube or to the safety factor (1.9) being exceeded. The calculation was performed
for the specified limit operating conditions of 200 °C (392 °F) and ≤ 100 bar (1 450 psi)
process pressure.
36
B
A
30
60
90
1
2
3
4
120
150
180
L (mm)
5
6
7
L (in)
Temperature switch OTR31, OTR35
210
240
270
8
9
10
11
300
12
A0008065
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