Penberthy MULTIVIEW™ Magnetic Liquid Level Gages utilize a communicating chamber constructed of 2-1/2" pipe which is connected to the process tank with either side or end connections. A float with a self-enclosed magnet is custom sized and weighted to float at the surface of the process liquid to be monitored. The float is then installed in the communicating chamber.
The industry-unique concentric magnet in Penberthy MULTIVIEW™ gages provides a more consistent magnetic field than conventional magnet designs.
Penberthy offers a wide range of materials, including:
- 304/304L STS
- 316/316L STS
- Alloy-20
- Monel
- Titanium
- Hastelloy-C
- PVC
- CPVC
- PVDF
- Tefzel® Lined
- Halar® Lined
Typical Process Applications are:
- Jet Fuel
- Molten Sulfur
- Sour Oil
- Diesel Fuel
- Deionized Water
- Sumps
- Freon
- Liquid Ethylene
- Water
- Underground Storage
- Benzene
- Asphalt Settler
- Acetic Acid
- Liquids & Slurries
- Sodium Hypochlorite
- Boiler Feedwater Tank
- Hydrochloric Acid
- Stop Oil
- LPG
- Interface
- Dowtherm®
- Sulfuric Acid
- Hydrogen Sulfide
- Oil/Water Separator
- Sodium Hydroxide
- Liquid Nitrogen
- Flare Drums
- Phosgene
- Ammonia
- Butane
- Seal Oil Pots
- Black Liquor
- Drip Pot
- Boiler Steam Drums
- Glycol
- Propane
- Hydraulic Oil
- Feedwater Heaters
- Extreme Flashing
- Hydrazine
- Caustic Chemicals
- Fuel Oil
- Hydrofluoric Acid
Follower Style Indicator by Penberthy
In MG Follower-Type models, the unit consists of a hermetically-sealed tube in a protective view housing. Within this tube is a gold anodized aluminum follower which will mirror level changes in the process tank. This entire assembly is attached to the communicating chamber where the follower is magnetically coupled with the float. Because the follower and float are magnetically linked, liquid level changes in the process tank will cause both float and follower to rise and fall in unison. The result is a precise indication of the liquid level within the vessel.
Flag Style Indicator by Penberthy
MG Flag-Type monitors provide a more secure link between the indicator and float. The view housing is sealed and consists of a single column assembly of aluminum flags within an extruded aluminum channel. These flags are anodized with black on one side and gold on the other. Each flag houses a small magnet and is assembled on a single, individual axle. As the float in the communicating chamber rises and falls, the magnetic interaction between float and flag magnets cause the flags to rotate 180°. These changes are shown through contrasting colors – black above and gold below the liquid level. To insure trouble-free operation, Penberthy's flags are magnetically interlocked and utilize mechanical stops. This prevents over-rotation. Penberthy's redundant axle system prevents binding, with each flag allowed to rotate on the axle and each axle free to rotate in the channel. This method of indication is always accurate, regardless of the speed of process level change or vibration.
THE FOLLOWING MAGNETIC LEVEL INDICATOR FEATURES PROVIDE APPLICATION VERSATILITY THAT OTHER PRODUCTS CAN NOT MATCH:
• PRESSURES: FULL VACUUM TO 2250 PSIG (900# ANSI)
• TEMPERATURES: -328°F TO 750° F SPECIFIC GRAVITY: AS LOW AS 0.37
• PROCESS CONNECTIONS: THREADED, FLANGED OR SOCKETWELD
• CONTINUOUS CHAMBER LENGTHS TO 20 FT. STANDARD; LONGER AVAIL.
• NO MECHANICAL PIVOT POINTS OR MOVEMENTS TO WEAR OUT OR
STICK; NO REPLACEMENTS OF GLASS, CUSHIONS, O-RINGS, ETC.
• TOTAL LEVEL AND INTERFACE LEVEL MEASUREMENTS POSSIBLE WITH
THE SAME UNIT (USING TWO FLOATS)
• CUSTOM BUILT TO THE CUSTOMER’S APPLICATION REQUIREMENTS
• “FLAG” STYLE INDICATOR CAN EASILY BE SEEN FROM UP TO 100 YDS!
STANDARD FEATURES:
• RUGGED 316SS DESIGN WITH MININUM TO NO MAINTENANCE
• SAFE FOR CORROSIVE, FLAMMABLE AND TOXIC FLUIDS
• ONLY MATERIALS IN CONTACT WITH THE PROCESS ARE THE VESSEL CONNECTIONS, VERTICAL FLOAT CHAMBER AND THE
FLOAT
• HIGH VISIBILITY SCALE IN ENGINEERING UNITS (FT, IN, MM, CUSTOM)
• POSITIVE LOCAL INDICATION WITH NO POWER REQUIRED
• UNIQUE “CONCENTRIC” MAGNET IN FLOATS FOR BETTER OPERATION
OPTIONAL FEATURES:
• ANSI RATED CHAMBERS IN: PVC, CPVC, MONEL, HASTELLOY-C, ALLOY 20, HALAR LINED SS, TEFZEL LINED SS, & OTHERS • INSULATION FOR HOT OR COLD TEMPERATURE APPLICATIONS
• MULTIPLE POINT SWITCHES FOR ALARMS & PUMP UP/ PUMP DOWN USE
• 2 TRANSMITTER TYPES: DIGITAL GEOMETRIC OR ANALOG MAGNETOSTRICTIVE; ACCURATE TO 1/32”
The Penberthy MULTIVIEWTM unit consists of three major sections:
Communicating Chamber
The standard chamber consists of 2 1⁄2" Schedule 10 or Schedule 40 pipe constructed of 304/304L STS, 316/316L STS, Alloy 20®, Monel®, Hastelloy C®, PVC, CPVC, PVDF or Halar® lined. Other chamber materials such as Inconel® 625 and Titanium may also be used.
Float
The float is constructed of 316L STS, Titanium, Alloy 20®, Monel®, Hastelloy C®, PVC, CPVC, PVDF or Halar® coated. It is specifically weighted for the specific gravity of the process media.
Indicator
You have three indicator options available. The type you receive was determined at the time of purchase.
A. Follower style with stainless steel housing. This indicator consists of a hermetically sealed borosilicate tube contained in 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 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
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 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.
Basic Mag Gage Installation Instructions
2.1 General Length:
Minimum is 20 7/16th inches and maximum is 258 inches overall, centers are 4.25 min and 236 max.
3.1 Unpacking
Upon receipt of your Penberthy MULTIVIEWTM 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.
The 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.
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.
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.
Typical damages to the visual indicators caused by mishandling
Follower 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' (not rotate properly) thereby providing incorrect indication.
5. PVC, CPVC & 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.
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 Indicator Alignment
To change the direction the indicator is facing, loosen the clamps holding the indicating to the communicating chamber, rotate the indicator to the position desired, and tighten the clamps. To align the indicator use the following procedure:
Follower Style
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 (the indicator will start to move upward).
3. 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.
4. Tighten the clamps.
Flag Style
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 (the indicator will start to move upward).
3. Move the indicator until the last visible gold flag has rotated to black. This will be the third flag from the bottom. (two flags are hidden behind the nameplate) Be careful not to raise the indicator too far.
4. Tighten the clamps.
4.0 Start-Up
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 shutoff 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.
5.0 Periodic Maintenance
Your Penberthy Magnetic Level Meter is designed to give you years of reliable service. However, equipment failure can occur. Sound maintenance 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.
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 shutoff valves, open the drain plug (or drain cock), and flush. If the float requires cleaning, the bottom flange must be removed after the shutoff devices are closed.
Anderson-Bolds is an Authorized Distributor for Penberthy, now know as Pentair Penberthy and formally know as Tyco Flow Control
216-360-9800
