801-2-31-A40 Datasheet, PDF (2/28 Pages) Magnetrol International, Inc. – KotronTM II Series 801 RF Capacitance Transmitter For Level/Flow/Volume

INSTALLATION
CAUTION: Please read the entire installation section carefully prior to starting installation.
UNPACKING
Unpack the instrument carefully, making sure all components
are removed from the packing material. Inspect the compo-
nents for damage, and report any concealed damage to the
carrier within 24 hours. Check the contents of the
carton/crate against the packing slip and report any discrep-
ancies to the factory. Check the nameplate model number,
making sure it agrees with the packing slip and purchase
order. Check and record the serial number for future refer-
ence when ordering parts.
INSTALLATION LOCATION
Kotron II Series 801 transmitters should be located with easy
access for service, calibration and monitoring. The electron-
ics should not be exposed to ambient temperatures as
follows: below -20° F (-29° C) without heater option; -40° F
(-40° C) with heater option; or above +160° F (+71° C).
Special precaution should be made to prevent exposure
to corrosive atmosphere, excessive vibration, shock, or
physical damage.
CAUTION: This unit contains CMOS electronics which
may be damaged by static electricity. Do not touch
any semi-conductor device unless you are properly
grounded.
INSTALLATION LOCATION cont.
Tanks/Silos with Non-Conductive Materials
of Construction
With plastic, concrete, wood, or any other non-conductive
walled vessel, the reference electrode mentioned above
needs clarification. Most commonly, this electrode will be in
the form of a concentric ground tube (i.e. stilling well). In
questionable circumstances, consult the factory. In all cases,
a good electrical connection must be made between the
ground surface and the probe housing.
NOTE: These comments also apply to glass-lined metal
walled tanks.
Vertical Mounting
Vertically mounted probes should be installed so that the end
of the probe rod is at least 2.00 inches (51 mm) below the
lowest desired level control point with conductive materials,
or 4.00 inches (102 mm) below the lowest desired level
control point with non-conductive materials. Refer to
Figure 1.
It is common practice to use the metal tank wall as the
ground reference. In such cases, it is required that the probe
housing makes a good electrical connection to the tank wall.
If there is any doubt about this connection or the use of PTFE
thread tape, gaskets, paint, or rust impede this connection, a
separate metal strap should be installed between the probe
housing and the tank.
In non-conductive media, sensing probes should be located
close to the tank wall for greatest sensitivity. Probes should
be isolated from severe motion in the tank, because surface
turbulence may cause signal deviation.
CAUTION: When an insulated probe is used in a haz-
ardous and/or abrasive medium, the probe should be
inspected annually for nicks, cuts or abrasions which
may degrade the integrity of the insulation. In the
event that wear is found, replace the probe or consult
the factory for further instructions. This procedure is
critical in vessels containing hazardous media unless
an I.S. probe circuit is used.
Metal Walled Tanks
On water based liquids, a problem should not be encoun-
tered with sensitivity or linearity. With non-conductive, low
dielectric media, sensitivity can be enhanced by locating the
probe close to and parallel with the tank wall. If this is not
practical, a concentric ground tube surrounding the probe,
(stilling well), may be a solution.
Insertion
length
(IL)
Minimum insertion depth:
Conductive material
2.00" (51 mm)
Nonconductive material
4.00" (102 mm)
Figure 1
Transmitter Mounting Location
The transmitter enclosure should be securely fastened to an
appropriate supporting structure in a location that permits
easy access for maintenance. Avoid locations that are
exposed to direct sunlight, flooding, high levels of radiated
electromagnetic interference, and excessive vibration or
shock.
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