Emerson Rosemount 5300 Series - Anchor the Probe

Table 3-17: Determination of Probe Segments for HTHP/HP/C Seal
Desired probe length (L) Number of
middle
segments (n)
Length of bottom segment
(Y)
in. mm in. mm
17.3 ≤ L ≤ 48.8 440 ≤ L ≤ 1240 0 pc Y = L -17.3 Y = L - 440
48.8 < L ≤ 80.3 1240 < L ≤ 2040 1 pc Y = L - 48.8 Y = L - 1240
80.3 < L ≤ 111.8 2000 < L ≤ 2840 2 pcs Y = L - 80.3 Y = L - 2040
111.8 < L ≤ 143.3 2840 < L ≤ 3640 3 pcs Y = L - 111.8 Y = L - 2840
143.3 < L ≤ 174.8 3640 < L ≤ 4440 4 pcs Y = L - 143.3 Y = L - 3640
174.8 < L ≤ 206.3 4440 < L ≤ 5240 5 pcs Y = L - 174.8 Y = L - 4440
206.3 < L ≤ 237.8 5240 < L ≤ 6040 6 pcs Y = L - 206.3 Y = L - 5240
237.8 < L ≤ 269.3 6040 < L ≤ 6840 7 pcs Y = L - 237.8 Y = L - 6040
269.3 < L ≤ 300.8 6840 < L ≤ 7640 8 pcs Y = L - 269.3 Y = L - 6840
300.8 < L ≤ 332.3 7640 < L ≤ 8440 9 pcs Y = L - 300.8 Y = L - 7640
332.3 < L ≤ 363.8 8440 < L ≤ 9240 10 pcs Y = L - 332.3 Y = L - 8440
363.8 < L ≤ 393.7 9240 < L ≤ 10000 11 pcs Y = L - 363.8 Y = L - 9240
3.6 Anchor the probe
In turbulent tanks it may be necessary to fix the probe. Depending on the probe type,
different methods can be used to guide the probe to the tank bottom. This may be needed
in order to prevent the probe from hitting the tank wall or other objects in the tank, as well
as preventing a probe from breaking.
Flexible single/twin lead probe
The flexible single lead probe itself can be used for anchoring. Pull the probe rope through
a suitable anchoring point, e.g. a welded eye, and fasten it with a chuck.
Table 3-18: Required Torque and Hex Key Dimensions
Probe Required torque Hex key dimension
Flexible twin lead 4.4 ft-lb (6 Nm) 4 mm
Flexible single lead 4 mm wire, stainless
steel
3.7 ft-lb (5 Nm) 4 mm
4 mm wire, Alloy C-276 1.8 ft-lb (2.5 Nm) 3 mm
4 mm wire, Alloy 400 1.8 ft-lb (2.5 Nm) 3 mm
4 mm wire, Duplex
2205
1.8 ft-lb (2.5 Nm) 3 mm
6 mm wire 7.4 ft-lb (10 Nm) 5 mm
Mechanical installation Reference Manual
April 2019 00809-0100-4530
88 Rosemount 5300 Level Transmitter