Level Control Switches

• L471/L471SC
• LV471, L971
• 282/282SC
• PT265/265SC

• 102
• 700 & 35
• NF265 & NF282
• FV3064

Series L471/L471 SC (Electric)

Application:
Used as a high & low level control, the L471 & L471SC can activate alarms, provide a switch input for control systems, or perform a variety of desired electrical switch operations actuated by a liquid or liquid interface.

Operation:
As the float is moved by varying liquid height, a magnet is moved closer to or further away from a switch enclosure. As the magnet moves closer, a reed switch in the enclosure closes. As the magnet moves further away, the switch opens. The arm containing the magnet also acts as a counterweight for the float. The float is small and will operate in liquids with a specific gravity as low as 0.4. The interface type will operate with a specific gravity differential as low as 0.1. This small float permits an economical installation in locations where other controls would be cost prohibitive.

Available with a relay mounted in an explosion-proof case allowing the control of larger electrical loads. The manual override option allows the operator to manually move the float arm to the test switch position.

• Easy to Repair
  Repairs on-site in 20 minutes Quick-Change switch cartridge
• Easy to Field Test
  The Manual Override option enables mechanical and electrical function testing while installed
• No Leaks
  Environmentally-isolated design operational fluids away from electrical circuitry
• Lower Operating Costs
  Quick-Change, inexpensive replacement
• Lower Inventory
  One L471 inverts for both High level applications
• Versatile
  One L471 provides both normally and normally closed switching by inverting the L471
• Safe
  Certified as explosion-proof 1 for Hazardous Locations: Class I, Div. 1, Groups B, C, D; Class II, Div. 1, Groups and Class III, Div.1, by CSA a Nationally recognized Testing Laboratory and Canada
• Corrosion Resistant
  Standard 316 Stainless Steel wetted housing components for corrosion resistance
• Monel, Kynar, Teflon, Teflon Coated, Hastelloy C, PVC, Polypropylene, Alloy 20
• Reliable
  Sealed switch cartridge prevents dust, fluids, and corrosion from interfering with electrical circuity
• Hi & Low Pressure Applications
  Available with Stainless Steel Polypropylene displacer options various process pressures

Series LV471, L971

LV471 Application:
These controls are used as a high or low level control to sound alarms, operate control equipment or perform a variety of desired electrical functions. These controls will operate in any specific gravity of 0.7 or higher. The standard unit has a 3" O.D. sphere float and is rated at 250 psi. The standard float arm is 4" long. Various floats and float arm lengths are available to fit your application. These controls are available with a normally closed or normally open switch arrangement. This unit is installed through a 1-1/2" NPT fitting and the float is attached with a cotter key after the body is screwed into place. Various flanged models are also available to meet your specifications.

L971 Extended, Horizontal Body Application:
These controls are used as a high or low level control. The electrical switch closure may be used to sound alarms, operate control equipment or perform any desired electrical function. These standard units are installed through a 1" NPT fitting. The standard float is a solid, high-density polypropylene material and will operate in specific gravities of 0.6 or higher. Due to the length of the float, these controls must have 3" of vertical clearance for the unit to operate. This control is available in a wide variety of designs to meet any specific requirements.

• Easy to Repair
  Repairs on-site in 20 minutes with the Quick-Change switch cartridge
• No Leaks
  Environmentally-isolated design keeps operational fluids away from electrical circuitry
• Lower Operating Costs
  Quick-Change, inexpensive replacement parts
• Lower Inventory
  LV471 and L971 serve both High& Low level applications
• Versatile
  Optional with the LV471 is the choice of normally open or normally closed switch positions
• One L971 Provides both normally open, and normally closed switching by simply inverting the L971's position
• Safe
  Certified as explosion-proof1 for Hazardous Locations: Class I, Div. 1, Groups A, B, C, D; Class II, Div. 1, Groups E, F, G; and Class III, Div.1, by CSA a Nationally Recognized Testing Laboratory in the U.S. and Canada
• Corrosion Resistant
  Standard 316 Stainless Steel wetted and housing components for corrosion resis tance
• Optional Corrosion Resistant Materials
  Monel, Teflon Coated, Hastelloy C, and Alloy 20
• Reliable
  Sealed switch cartridge prevents dust, fluids, and corrosion from interfering with electrical circuity
• Hi & Low Pressure Applications
  Available with Stainless Steel and Polypropylene displacer options for various process pressures

Series L282/L282CS (Pneumatic)

• Easy to Repair
  Repair on-site in 20 minutes with the Quick-change pneu matic cartridge Easy to
• Field Test
  The manual override option enables mechanical and pneumatic function testing while installed.
• No Leaks
  Environmentally isolated design keeps operational fluid away from supply gas.
  Lower Operating Cost
  Quick-change replacement parts.
  Non-bleed output saves gas.
• Lower Inventory
  Direct or indirect acting by changing the supply and exhaust ports.
  Use one 282 on either high or low level activation
• Safe
  Pneumatically activation in an environmentally-isolated design
• Corrosion Resistant
  Standard 316 Stainless Steel wetted parts for corrosion resistance.
• Optional Corrosion Resistant Materials
  Monel, Kynar, Teflon, Teflon Coated, Hastelloy C, PVC, Polypropylene, and Alloy 20 optional Corrosion Resistant Materials available.
• Hi & Low Pressure Applications
  Available with Stainless Steel and Polypropylene displacer options for various pressures.

Series PT265/265SC, PT966

• Easy to Repair
  Repairs on-site in 20 minutes
• No Leaks
  Environmentally-isolated design eliminates the need for seals, torque tubes, diaphragms, and springs; keeps operational fluids away from supply gas
• Lower Operating Costs
  Quick-Change replacement parts
• Versatile
  Direct or indirect acting by inverting the PT265 and the PT966
• Lower Inventory
  Both the PT265 and PT966 can be used on either high or low level activation
• Safe
  Pneumatic activation in an environmentally- isolated design
• Corrosion Resistant
  Standard 316 Stainless Steel wetted and housing components for corrosion resistance
• Optional Corrosion Resistant Materials
  Monel, Teflon Coated, Hastelloy C, and Alloy 20
• High & Low Pressure Applications
  Available with Stainless Steel and Polypropylene displacer options for various process pressures

Series 102

Application:
These are used as a level control or as a high or low level alarm. The pneumatic output can be used to throttle valves, sound alarms or perform any desired pneumatic function. Any liquid or liquid interface can be monitored.

Operation:
A spring acts as a counterbalance on the displacer. It is externally adjustable for various specific gravities. As the liquid rises, the displacer and arm assembly is raised, rotating the trunnion. This action turns the pilot lever containing an adjustment screw. This screw operates the pilot to give the output signal. Output is nonbleed and is either throttling or snapacting. All adjustments are factory set and are field adjustable.

• Large Pass-Through Volume
  Large orifice size permits higher pass through volumes for activating large control valves
• Field Adjustable
  For various specific gravities and output points
• Lower Operating Costs
  Optional Non-Bleed output saves gas
• Reliable
  Self-Lubricating packing increases product life
• Easy Pressure Verification
  Pressure gauges on both the supply and output ports
• Versatile
  Available with Snap or Throttling action, and a horizontal or vertical displacer
• High & Low Pressure Applications
  PVC displacer, and other optional displacers, work in both high and low process pressures
• High Temperature Applications
  TFE or Stainless Steel displacers work in high temperature processes

Series 700 & 35

LINC-700 Series External Cage
These cages are used with the LINC-L471 electric, LINC-PT265 and LINC-282 Series pneumatic level controls. Available with or without the LINC 35-Series sight glass. The process connection is a standard 1" NPT. Available in other sizes and options.

• Of level and control operation with Optional bull's-eye sight glass
• Optional External Cage allows field servicing without tank drain-down
• Standard cast Ductile in the 1" & 1 1/2" NPT cage body, and cast Steel in the Ring Bolted cage body
• 316 Stainless Steel, consult factory for other optional materials

LINC-35 Series Sight Glass
The 35 Series is a bull's-eye sight glass with either a 1 1/2" NPT or 2" NPT. These can be used at the same level as the pneumatic or electrical level controls to show visual liquid level over a small range. They can also be used in conjunction with the external cages to provide visual indication on level controls or safety systems.

• Of level and control operation
• Available with a PyrexTM glass lens
• Standard 303 Stainless Steel
• 316 Stainless Steel, consult factory for other optional materials

Series NF265/NF282

Application:
These flow indicators are used to monitor flow/no flow. The electric or pneumatic output is used to alarm, operate valves, control pumps or perform any desired electrical or pneumatic function.

Operation:
A flowing fluid moves the paddle activating an electric switch or pneumatic output.

• Easy to Repair
  Repairs on-site in 20 minutes with the Quick-Change cartridge
• No Leaks
  Environmentally-isolated design keeps operational fluids away from electrical circuitry and supply gas
• Lower Operating Costs
  Quick-Change, inexpensive replacement parts
• Non-Bleed output saves gas
• Lower Inventory
  Pneumatic NF282 provides direct or indirect acting by changing the supply and exhaust ports
• Bi-directional flow through rotating the Electric NF265
• Safe
  Pneumatic activation in an environmentally-isolated design
• NF265 certified as explosionproof 1 for Hazardous Locations: Class I, Div. 1, Groups A, B, C, D; Class II, Div. 1, Groups E, F, G; and Class III, Div.1, by CSA a Nationally Recognized Testing Laboratory in the U.S. and Canada
• Reliable
  Sealed switch cartridge prevents dust, fluids, and corrosion from interfering with electrical circuity
• Corrosion Resistant
  Standard 316 Stainless Steel wetted and housing components for corrosion resistance
• Optional Corrosion Resistant Materials
  Monel, Kynar, Teflon, Teflon Coated, Hastelloy C, PVC, Polypropylene, and Alloy 20

Series FV 3064

Application
These flow indicators are used to monitor flow/no flow and have a sensitivity as low as 1.5 oz. of water/minute. Chemical injectors, glycol pumps and other low flow applications are indicated by a switch closure. The standard model indicates flow at 0.45 GPM and no-flow at 0.30 GPM.

Operation
As flow enters the inlet, the slug containing a magnet is raised. This action actuates the single pole, double-throw switch in the enclosure. There is no mechanical linkage between the slug and the switch; a magnetic field does the work. When flow decreases, the slug drops and the switch moves to the opposite pole.

• Easy to Repair
  Repairs on-site in 20 minutes with the Quick-Change switch cartridge
• No Leaks
  Environmentally-isolated design keeps operational fluids away from electrical circuitry
• Reliable
  Sealed switch cartridge prevents dust, fluids, and corrosion from interfering with electrical circuity
• Lower Operating Costs
  Quick-Change, inexpensive replacement parts
• Lower Inventory
  Mounts vertically or horizontally through rotating the installation of the FV3064
• Excellent Low-Flow Performance
  Optional sensitivity ratings avail able as low as 1.5 oz./minute
• Durable
  Standard cast brass construction
• Optional Corrosion Resistant Materials
  316 Stainless Steel
• High & Low Pressure Applications
  Working pressures up to 1,500 psi