INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation these instructions must be read fully and understood
Product warranty
Emerson warrants its Penberthy products
as designed and manufactured to be free
of defects in the material and workmanship
for a period of one year after the date of
installation or eighteen months after the date
of manufacture, whichever is earliest. Emerson
will, at its option, replace or repair any products
which fail during the warranty period due to
defective material or workmanship.
Prior to submitting any claim for warranty
service, the owner must submit proof of
purchase to Emerson and obtain written
authorization to return the product. Thereafter,
the product shall be returned to Emerson with
freight paid.
Figure 1 Exploded parts view ........................... 8
This warranty shall not apply if the product has
been disassembled, tampered with, repaired or
otherwise altered outside of Emerson's factory,
or if it has been subject to misuse, neglect or
accident.
The responsibility of Emerson hereunder is
limited to repairing or replacing the product
at its expense. Emerson shall not be liable
for loss, damage or expenses related directly
or indirectly to the installation or use of
its products, or from any other cause or
for consequential damages. It is expressly
understood that Emerson is not responsible
for damage or injury caused to other products,
buildings, personnel or property, by reason of
the installation or use of its products.
This is Emerson’s sole warranty and in lieu of
all other warranties, expressed or implied which
are hereby excluded, including in particular all
warranties of merchantability or fitness for a
particular purpose.
This document and the warranty contained
herein may not be modified and no other
warranty, expressed or implied, shall be made
by or on behalf of Emerson unless made in
writing and signed by the company's general
manager or director of engineering.
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
1 INTRODUCTION
The Penberthy MULTIVIEW™ magnetic liquid
level meter is designed especially for corrosive,
toxic or flammable materials that preclude the
use of glass for visual indication.
1.1 Theory of operation
The MULTIVIEW™ magnetic liquid level meter
tracks the liquid level in a process vessel
or tank by means of a float (containing a
magnet) in a communicating chamber. The
communicating chamber is connected to the
process vessel. Each float is custom weighted
for the specific gravity of the process media.
The indicator, mounted on the outside of the
communicating chamber, contains either a
follower or series of flags coupled magnetically
to the float. As the float rises and falls with the
liquid level, the follower or flags mirror this
movement and provide visual level indication.
Point level control and remote continuous
level measurement are also available. This is
achieved by attaching electronic switches and/
or a 4-20 mA level transmitter to the exterior of
the communicating chamber.
1.2 System description
The Penberthy MULTIVIEW™ unit consists of
three major sections:
Communicating chamber
The standard chamber consists of 2" Schedule
10 pipe, or 2½" Schedule 10 or Schedule 40
pipe constructed of 304/304L STS, 316/316L
STS, Alloy20
CPVC, PVDF, Tefzel
Other chamber materials such as Inconel
®
, Monel®, Hastelloy C®, PVC,
®
lined or Halar® lined.
®
625
and Titanium may also beused.
Float
The float is constructed of 316L STS, Titanium,
®
Alloy 20
, Monel®, Hastelloy C®, PVC, CPVC,
PVDF or other (consult sales). It is weighted
specifically for the specific gravity of the process
media.
A. Follower style with stainless steel housing
This indicator consists of a hermetically
sealed borosilicate tube contained in a
stainless steel housing. A gold colored
follower is located inside the tube.
The scale assembly is an integral part of the
stainless steel housing. The scale can be
specified to indicate any unit of measure.
B. Follower style with extruded aluminum
housing
This indicator consists of a hermetically
sealed borosilicate tube contained in an
extruded aluminum housing. A gold colored
follower is located inside the tube.
The scale assembly is a separate aluminum
extrusion attached to the indicator. It is
possible to receive an indicator with no
scale attached. If a scale is specified, it
can indicate any unit of measure and be
mounted on either side of the indicator.
C. Flag style with stainless steel housing
This indicator consists of a hermetically
sealed borosilicate tube contained in
a stainless steel housing. A series of
magnetically-interlocked plastic flags are
bright yellow. The flags are black on one
side and bright yellow colored on the other
(other colors available). As the float rises the
flags rotate, turning from black to yellow.
Thescale assembly is an integral part of the
stainless steel housing. The scale can be
specified to indicate any unit of measure.
D.
Flag style with extruded aluminum housing
This indicator consists of a series of
magnetically interlocked flags. The flags
are black on one side and gold colored
on the other. As the float rises the flags
rotate, turning from black to gold. The flag
assembly is sealed within an extruded
aluminum housing. The scale assembly is
a separate aluminum extrusion attached
to the indicator. It is possible to receive
an indicator with no scale attached. If a
scale is specified, it can indicate any unit of
measure and be mounted on either side of
the indicator.
Indicator
You have four indicator options available.
Thetype you receive was determined at the
time of purchase:
2
PENBERTHY MULTIVIEW™ MAGNETIC LIQUID LEVEL METERS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
2 SPECIFICATIONS
Operating temperature
(Subject to float limitations)
Metallic chambers*: -325°F to 750°F
(-198°C to 399°C)
PVC chamber: -20°F to 140°F
( -29°C to 60°C)
CPVC chamber: -20°F to 200°F
( -29°C to 93°C)
PVDF chamber: -20°F to 250°F
( -29°C to 121°C)
Electronic switches/transmitter
Refer to the corresponding Installation,
Operation and Maintenance manual for the
following items:
MGS-314/314D
Level Control Switch VCIOM-03387
MGS-314L
Level Control Switch VCIOM-03389
MGT-362
Level Measurement Transmitter
VCIOM-03388
2.1 Floats
See Table 4 for standard floats. See Table 5 for
extended length floats. The magnet system is
located in the upper portion of the float.
Consult factory for the minimum specific gravity for Halar
®
or Tefzel® coated floatsConsult factory for information regarding floats for interface service
4
PENBERTHY MULTIVIEW™ MAGNETIC LIQUID LEVEL METERS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
3 INSTALLATION
3.1 Unpacking
Upon receipt of your MULTIVIEW™ unit, check
all components carefully for damage incurred
in shipping. If damage is evident or suspected,
do not attempt installation. Notify the carrier
immediately and request a damage inspection.
Check each item against the packing list.
T
he float is not in the communicating chamber
when shipped. Make sure that you do not throw
the float away with the packing materials. The float
should not be installed until the communicating
chamber has been mounted to the process vessel.
3.2 Mounting
1. To operate properly, the magnetic liquid
level meter must be vertical.
2. Check the vessel connections with a
plumb line to verify alignment. The vessel
must be free from dirt and debris to avoid
malfunction of the level indicator.
3. A minimum distance of 8" (203 mm) should
be maintained from the centerline of the
communicating chamber to the nearest
source of ferromagnetic material.
4. Special handling and installation
precautions must be used with long
magnetic level gages. This applies to any
magnetic gage 10 feet (3 meters) or more
in length. Do not attempt to handle or move
with single point suspension or by both end
suspension (such as two people picking up
a gage by the ends). The standpipe must be
supported along its entire length.
'Whipping' is highly probable unless the
standpipe is supported along its entire length
during handling/installation. Raising a long
standpipe from the horizontal (shipping) to
vertical (installation) plane will cause elastic
bending unless additional support is provided.
Suggestion
Leave the standpipe supported in its shipping
container until in the vertical installation plane.
Support elements
Installation should be planned to include
support elements at least every 6 feet
(2 meters) (4 feet [122 cm] for polymer
standpipes) to prevent vibrational whip,
windload bending, etc.
Typical damages to the visual indicators caused by
mishandling:
• Follower style and hermetically sealed flag style
The glass tube can be stressed beyond its
tensional limits and break or shatter if the
standpipe is allowed to whip or bend.
• Flag style
The component parts of this indicator have
close tolerances. If the standpipe is allowed
to whip or bend during handling and/
or installation, there is an extremely high
probability that certain flags will 'hang up'
(notrotate properly) thereby providing incorrect
indication.
5. PVC, CPVC and PVDF magnetic liquid level
meters are shipped without the indicator
attached. This is done to prevent damage to
the indicator. DO NOT attempt to install the
communicating chamber with the indicator
attached.
Follow the installation procedures outlined in
step 4 above. If the communicating chamber is
greater than 60 inches (1524mm) in length you
may need to support it during installation.
Attach the indicator to the communicating
chamber. Follow the procedure in Section3.3
to align the indicator.
6. It is strongly recommended that shutoff
devices (gagecocks, sliders, cocks) be
installed between the vessel and the
communicating chamber to allow the
magnetic gage to be isolated for cleaning.
7. Before start-up verify that the
communicating chamber is free of any
particles.
3.3 Float Installation
To install the float, remove the bottom flange
from the communicating chamber. Insert the
float top first. That end of the float has been
identified with a piece of removable orange
tape and the word 'top' etched into the float.
Place the gasket over the spring on the bottom
flange and reinstall. If installing the float from
the top end of the chamber, make sure that all
flags are gold or yellow prior to inserting the
float.
5
PENBERTHY MULTIVIEW™ MAGNETIC LIQUID LEVEL METERS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
3.4 Indicator alignment
To change the direction the indicator is facing,
loosen the clamps holding the indicator to the
communicating chamber, rotate the indicator to
the position desired and tighten the clamps. To
align the indicator use the following procedure:
1. Loosen the clamps holding the indicator
to the communicating chamber. Move the
indicator down as far as it will go.
2. Lower the liquid level in the communicating
chamber until:
a. Side connection
The liquid is at the bottom feed level.
b. End connection
The indicator stops moving. Then add
liquid to the chamber until the float just
becomes buoyant (theindicator will start
to move upward).
3. Style
a. Follower style
Move the indicator so that the centerline
on the magnetic follower is aligned with
'zero' on the calibrated scale. If you do not
have a scale the bottom of the follower
should just touch the cushion in the
bottom of the hermetically sealed tube.
b. Flag style
Move the indicator until the last visible
gold or yellow flag has rotated to black.
Be careful not to raise the indicator too far.
4. Tighten the clamps.
4 START-UP
5 PERIODIC MAINTENANCE
Your Penberthy magnetic level meter is
designed to give you years of reliable service.
However, equipment failure can occur.
Soundmaintenance practices require periodic
inspection of the gage to ensure it is in good
working order.
The end user must determine the appropriate
maintenance schedule based upon his or
her experience for the specific application.
Realistic maintenance schedules can only be
determined with full knowledge of the services
and applications involved.
WARNING
Do not proceed with any maintenance if the
magnetic gage is still at operating pressure or
temperature. Relieve the unit of pressure or
vacuum, allow it to reach ambient temperature
and purge or drain it of all fluids. Failure to follow
instructions could result in severe personal injury
or property damage.
If the process liquid is dirty or contains
deposits, it is recommended to flush the
instrument periodically.
To flush the communicating chamber, close
the shut off valves, open the drain plug (or drain
cock) and flush. If the float requires cleaning,
the bottom flange must be removed after the
shut off devices are closed.
1. Check the connections between the
communicating chamber and the vessel to
insure proper mating.
2. Close the drain plug (or drain cock if
applicable).
3. Open the shut off valve at the top connection.
4.
Slowly open the shut off valve at the bottom
connection to allow for a gradual equalization
of level in the communicating chamber.
5. Check for any leaks at the connections. If
none are observed, the unit is ready for use.
6
PENBERTHY MULTIVIEW™ MAGNETIC LIQUID LEVEL METERS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
6 TROUBLESHOOTING
TABLE 6
ProblemCauseSolution
Loss of indication. Even though there is
liquid in the vessel and the float is moving
freely, the indicator fails to register a level.
Float is stationary when level changes occur.
* All magnets will lose strength over time. The rate of loss is normally very gradual and will vary with the application.
Higher operating temperatures and excessive vibration can increase the rate of loss.
1. Loss of magnetic strength in the float*.1. Return the float to the factory to be remagnetized.
2. The float is installed incorrectly.2. Drain the gage, remove the float and install it correctly.
3. If it is a follower style indicator you may be experiencing
volatile level changes or high levels of vibration.
1. Deposits in the process liquid have lodged between the float
and the inside wall of the communicating chamber.
There is a source of ferromagnetic material within 8”
2.
(203mm) of the centerline of the communicating chamber.
3. Change to a flag style indicator.
Due to its design it will not decouple from the float.
1. Drain and flush the communicating chamber.
Removeand clean the float.
2. Remove the source of the ferromagnetic material
orshield itfrom the magnetic gage.
7 DISPOSAL AT END OF USEFUL LIFE
Penberthy meters are used in a variety of fluid
applications. By following the appropriate
federal and industry regulations, the user
must determine the extent of preparation
and treatment the meter must incur before
its disposal. A Safety Data Sheet (SDS) may
be required before disposal services accept
certain components.
Metal, glass and polymers should be recycled
whenever possible. Refer to order and Emerson
Material Specification sheets for materials of
construction.
8 TELEPHONE ASSISTANCE
If you are having difficulty with your
MULTIVIEWTM Magnetic Liquid Level Meter,
contact your local Penberthy distributor.
You may also contact the factory direct at
(956) 430-2500 and ask for an applications
engineer. So that we may assist you more
effectively, please have as much of the
following information available as possible
when you call:
If attempts to solve your problem fail, you
may request to return your liquid level meter
to the factory for intensive testing. You must
obtain a Return Authorization (R. A.) number
from Emerson Harlingen before returning
anything. Failure to do so will result in the unit
being returned to you without being tested,
freight collect. To obtain an R. A. number, the
following information (in addition to that above)
is needed:
• Reason for return
• Person to contact at your company
• 'Ship-to' address
We recommend that you return the entire
unit for testing. There is a minimum charge
for evaluation of non-warranty units. You will
be contacted before any repairs are initiated
should the cost exceed the minimum charge.
If you return a unit under warranty, but is not
defective, the minimum charge will apply.
• Standpipe part
• Float part number
• Name of the company from whom you
purchased the meter
• Invoice number and date
• Process material
• Specific gravity
• Operating temperature
• Operating pressure
• Brief description of the problem
7
PENBERTHY MULTIVIEW™ MAGNETIC LIQUID LEVEL METERS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Halar® is a registered trademark of Ausimont
Hastelloy C® is a registered trademark of
Haynes International, Inc.
Alloy 20® is a registered trademark of
Carpenter Technologies, Inc.
Inconel® and Monel® are registered trademarks of
Inco Alloys International, Inc.
Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.
Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Emerson Automation Solutions, Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their
respective owners.
38
7
175 A
3
4
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be
construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by
our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without
notice.
Emerson.com/FinalControl
8
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