PRE-INSTALL ATION CONSIDERATIONS
2
Choosing a Location:
(See Figure 2)
1) Material Flow
- When selecting a location for the MK-2,
choose a point in the vessel where the probe will be out of
the direct flow of incoming and outgoing material to prevent
any mechanical damage that may be caused by the pres-
sure of the flow. The MK-2 must be positioned at a point
where incoming material will reach and cover the probe in its
normal flow, and when receding, will flow away from the
probe in an even manner. For best results, choose a posi-
tion where a majority of the probe, not just the tip, will be
covered. This is particularly important when detecting mate-
rials with low relative dielectric constants and low product
densities. The unit will not operate as a “tip sensitive”
device. For extended length models, allow for at least 8 to
12 inches (203-305 mm) of probe coverage. When sensing
highly conductive materials, or those with a high dielectric
constant, the MK-2 can perform as a “tip sensitive” sensor.
2) Vessel Contact
- Select an area where the probe can not
contact any internal structure elements of the vessel. When
using the Cable Extension Probe, consider the angle of
repose of the material that will flow into and out of the ves-
sel. Insure that the expected swing of the cable will not
touch the vessel.
3) Driven Shield Penetration -
Select a location which
ensures that the driven shield section protrudes into the ves-
sel and is not recessed in the mounting neck.
4) Multiple Probe Proximity -
If more than one sensor is
mounted in the vessel, do not place the sensors closer than
18 inches (457 mm) from one another.
5) Pipe Extension Reinforcement -
When top mounting a
probe with a pipe extension, select a location where it is fea-
sible to reinforce the extension to the vessel wall. See
Mechanical Installation portion of this bulletin for details.
6) Split Architecture Installation
- When installing a sensor
with a remote probe, the restrictions above apply to the
remote probe. The remote electronics can be installed
either horizontally or vertically. The remote electronics must
be located within 12 feet (3.6 m) (wiring distance) of the
probe at a location that is free from excessive heat and/or
vibration.
Cover Removal:
(See Figure 1)
Before loosening the cover, loosen or remove the cover lock
screw. Spanner slots are incorporated on the top of the cover
which should be used to loosen the cover from the housing.
Use a flat bar for initial loosening. DO NOT use a strap or chain
type wrench. Keep hands clear of threads on the cover and
housing to avoid contact with the thread lubricant.
Figure 2
Figure 1
