25
Reference Manual
00809-0100-4530, Rev DD
May 2016
Table 3-2. Pulling Force on Probe Installed in Tanks with Different Products
Note
For environments where electrostatic discharges are likely to occur, such as plastic pellets, it
is recommended that the probe end is grounded.
3.2.5
Mounting in chamber/still pipe
The chamber is also known as bridle, side pipe, bypass pipe, and cage. Dimensioning the
chamber correctly and selecting the appropriate probe is key to the success in these
applications.
To prevent the probe from contacting the wall, centering discs are available for the rigid
single, segmented rigid single, flexible single, and flexible twin lead probes. The disc is
attached to the end of the probe, and thus keeps the probe centered in the chamber. See
also
“Mounting a centering disc for pipe installations” on page 59
Figure 3-8. Prevent the Probe from Contacting the Wall
Material
Tensile load for 0.16 in. (4 mm)
flexible single lead probe, lb (kN)
Tensile load for 0.24 in. (6 mm)
flexible single lead probe, lb (kN)
Probe length 49 ft (15 m)
Probe length 115 ft (35 m)
Probe length 49 ft (15 m)
Probe length 115 ft (35 m)
Tank Ø=
10 ft (3 m)
Tank Ø=
39 ft (12 m)
Tank Ø=
10 ft (3 m)
Tank Ø=
39 ft (12 m)
Tank Ø=
10 ft (3 m)
Tank Ø=
39 ft (12 m)
Tank Ø=
10 ft (3 m)
Tank Ø=
39 ft (12 m)
Wheat
670 (3)
1120 (5)
1800 (8)
4500
(20)
(1)
1.
Exceeds tensile strength limit.
900 (4)
1690 (7.5)
2810
(12.5)
6740
(30)
Polypropylene
Pellets
340 (1.5)
670 (3)
810 (3.6)
2360
(10.5)
450 (2)
920(4.1)
1190 (5.3) 3510
(15.6)
Cement
900 (4)
2020 (9)
2470 (11)
7310
(32.5)
1350 (6)
2920 (13)
3600 (16)
10790
(48)
Make sure the probe does
not come into contact with
the chamber wall, e.g. by
using a centering disc.
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