Siemens Pointek CLS300, Инструкция по эксплуатации, Страница: 15 / 32

7ML19985CK03 Pointek CLS 300 – INSTRUCTION MANUAL Page 13
Cable Tensile Strength
Do not exceed the tensile strength of the cable at 1900kg/4188lbs.
Always confirm that the load carrying capability of the silo/tank roof is sufficient to withstand
the actual force on the cable conditions, especially where the force will be, or could be, as
great as 1900kg/4188 lbs. A cable (rope) probe with a PFA jacket reduces the amount of
possible product build-up on the probe as well as the tensile force on the cable.
Cable Weights
A standard weight with optional attachable Butterfly enhancer is available for the cable
version. We recommend the Butterfly weight for lower dielectric constant materials (often in
solids) because it increases the change in capacitance when the material comes in contact
with the cable end. This occurs when the silo is quite tall (> 15 m/45 ft) and the dielectric
constant is less than (
>
r
< 4).
Shortening the Cable
Methods
•
An angle grinder (preferably with a disc suitable for stainless steel)
or
•
Wire cutters (suitable for piano cable
Ø
6 – 9mm).
Procedure
1.
Remove Butterfly (if present) from weight.
2.
Loosen the three set screws and pull weight from the cable.
3.
Grind/cut the cable to the required length, and then remove rough edges from the
cable.
4. Ensure that cable strands are properly seated in the lay of the cable (i.e. no wire
strands sticking outside the normal cable profile). Make sure
ALL
strands are
properly seated before continuing the assembly.
5.
Push the weight onto the cable while simultaneously rotating it counter-
clockwise
around the cable. Make sure that no cable strands are pushed out of
their position in the cable and that the cable is fully inserted.
6.
Re-fasten the weight by tightening the three set screws.
7.
Re-attach Butterfly (if required) to the weight.