Liquid level switches Engineered for flexibility and performance Hermetically sealed
Corrosion resistive
Long Life
Compact & Precise
Engineering GREAT Solutions
02  Liquid level switches
Contents 03 Creating advantage with liquid level switches
06 Multi-point liquid level switches 07 Custom liquid level switches
04 Single-point liquid level switches
Engineering GREAT solutions through people, products, innovation and service IMI Precision Engineering is a world-leader in fluid and motion control. Building close, collaborative relationships with our customers, we gain a deep understanding of their engineering needs and then mobilise our resources and expertise to deliver distinctive products and solutions. Wherever precision, speed and engineering reliability are essential, our global footprint, problem-solving capability and portfolio of high performance products enables us to deliver GREAT solutions which help customers tackle the world’s most demanding engineering challenges. > Reliability We deliver and support our high quality products through our global service network. > High performance products Calling on a world-class portfolio of fluid and motion control products including IMI Norgren, IMI Buschjost, IMI FAS, IMI Herion and IMI Maxseal. We can supply these singly, or combined in powerful customised solutions to improve performance and productivity. > Partnership & Problem Solving We get closer to our customers to understand their exact challenges.
Liquid level switches 03
Creating advantage with liquid level switches The large selection of high-quality IMI Precision Engineering liquid level switches are designed to meet an extensive range of application requirements across a vast array of industries — including food and beverage, printing, and life science applications. Delivering advantage for your application IMI Precsion Engineering creates tailor-made solutions and products which drive significant improvements — including cost and energy savings, a simplified supply chain and a reduction in machine complexity. IMI Precision Engineering liquid level switches offer advantages: > Ruggedly engineered for extended service > Design flexibility, such as:
– Interface configuration to detect two dissimilar liquids (oil and water)
– A variety of mounting styles (flanges, bent stem, different NPT, straight thread and metric size mounting plugs)
– Customer-specific electrical wire terminations
– Custom lead lengths, cable jackets and connectors
> Highly reliable reed switch technology > Wide selection of available materials for most any media or application
Ease of installation
Exact customer requirements
Imaginative solutions
04 Liquid level switches
Single-point liquid level switches LS 1 Series — Compact, rugged and economical
LS 1 Ultra Low Level Series — Detect liquids as low as .625"
> Compact size with small displacement
> V ariety of stem materials available for specific requirements
> Highly reliable yet low cost > Seamless cellular construction > Handles temperatures -40°F to 150°F > NSF and FDA approved
> F loat shape and displacement allows reed switch to be activated with float riding close to surface
> Ideal for food and beverage applications
LS 1 Series with Slosh Shield — Ideal for dampening turbulent fluids
> Excellent chemical resistance
> C ompact size for minimal displacement
Mini LS 1 Series — Ultra compact fits in hard-to-reach places > Small, .75" float diameter > Seamless cellular construction > U nique hex-stem design minimizes potential liming
> A dapts easily to other switch types and float combinations for OEM applications > 100% Polypropylene construction LS 11 Series Plastic Side Mount — Direct, side-mounted level controls for varied fluid compatibility
25 BN Series — Spring-based, PTFE float for high pressure applications > S mall float design (.85 dia.) for tight areas > S olid PTFE float design for pressures up to 1000 PSI > Variety of stem/float combinations 25 BN Series — Buna N General purpose, single-point detector > Small, compact size > Precise repeatability > Reliable, long life performance > H ighly resistant to shock and vibration > Stem available in brass or 316 SS
> P olypropylene or PBT construction > A ll Polypropylene construction offers broad fluid compatibility > Single unit offers normally open or normally closed operation > Internal and external mounting available
broad fluid compatibility
compact, rugged and economical
reliable, long-life performance fits in hard-to-reach places LS 1
Mini LS 1
Products shown with electrical connectors (optional)
LS 1 Ultra Low Level
LS 1 With Slosh Shield
LS 11 Plastic Side Mount
Liquid level switches 05
50 BN Moisture Resistant Series — Maximum resistance to external moisture, condensation or water
35 SS Series — Compact design for high-corrosive, high-temp applications
50 SS Series Low Specific Gravity — Buoyant float for low specific gravity as low as 40
> Moisture resistant
> Long operating life
> Ideal for use in sumps or bilges
> Resistant to shock and vibration
> I deal high/low or intermediate level alarm for propane and butane storage
> D ual wall polyolefin shrink tubing resists moisture
> Compact size
50 BN Series Intermediate — Intermediate size general-purpose detector
> F loat design can be adapted to multi-level configuration for total control
> 316 SS construction 35 SS Series Side Mount — “Bent stem” level control for mounting through tank walls
> Highly reliable yet inexpensive > Compact, narrow displacement
> 9 0° bend for side mounting when access to tank top/bottom is restricted
> Stem available in 316 SS or Brass
> A vailable in all 316 SS construction
> Long operating life 50 BN Series Large — Large size general-purpose detector > L arge float for maximum displacement in high viscosity fluids
> Temperature range of -40°F to 300°F
40 SS Series Side Mount — Direct, side-mounted level controls
50 SS Series — Stainless steel detector for highpressure, corrosive & high-temp applications > A ll stainless steel, wetted surfaces > High resistance to corrosive materials > O perates in high pressure (750 PSI) and high temperature environments
> Precise repeatability > Ease of installation > I nternal and external mounting available
> E asily extends to multiple float arrangement up to 72" long > Rugged design for heavy duty service
buoyant for low specific gravity shock and vibration resistant
small, compact 25 BN
moisture resistant (50 BN series)
35 SS Side Mount
precise repeatability 40 SS Side Mount
50 SS
06 Liquid level switches
Multi-point liquid level switches
up to 72" overall length
Conveniently apply single-point detectors to a multi-point application when an off-the-shelf solution just won’t do. 627 Series — Miniature multi-point level switches IMI Precision Engineering miniature multipoint switches offer floats as small as .75 in diameter for those hard-to-reach areas with up to five actuation levels on a single tank entry > Up to 48" overall length > Up to 5 control points > CSA Approved File #90981 > UL Recognized File #E129277 Standard Multi-Point Level Switches — Provides a convenient method of customizing your level switch with standard times and costs
Level Controls for 55 Gallon Drums — Flexible high, low, or high and low level switch options available > Easy to install > S pecify high-level alarm signal to prevent spills, low-level signal for refills required, or high- and low-level alarm combination for total control > B oth high- and low-level signal options can provide input to alarms, or can be combined with a relay or controller to operate valves or pumps > A vailable in a variety of materials for most medias and requirements
> Up to 72" overall length > Up to 6 control points > U p to 6 actuation levels on a single tank entry
up to 5 control points
Multiple activation levels on a single tank entry
627 Series
Products shown with electrical connectors (optional)
Liquid level switches 07
Custom liquid level switches IMI Precision Engineering can provide OEMs with custom liquid level switch solutions — with any combination of float types — for your exact application in a wide range of industries. We bring together our extensive range of switches, manufacturing capabilities, and quality processes to provide customers with reliable solutions to their unique situation. Receive a copy of the Level Switch Inquiry Application Sheet and define your general requirements. IMI Precision Engineering helps you determine the best solution for your challenge. Let us put it to work for you. 80% Shut-Off Switch for Recovery Refill Cylinders — Specifically for overfill protection of refrigerant recovery tanks
Design Considerations > P ressure > T emperature
> M eets rigid UL requirements for refrigerant recovery equipment
> M ounting
> S pecifications for switches meet recovery tank manufacturer dimensions
> M edia characteristics such as:
> C ustomize with multiple floats, various actuation levels and a variety of wire or connector terminations
– Specific gravity
– Corrosive characteristics
– Viscosity
> T ermination
> A ctuation point(s) > M aterials of construction > S witch life/load
80% Shut-Off Switch
IMI Precision Engineering operates four global centres of technical excellence and a sales and service network in 75 countries, as well as manufacturing capability in the USA, Germany, China, UK, Switzerland, Czech Republic, Mexico and Brazil. For information on all IMI Precision Engineering companies visit www.imi-precision.com Supported by distributors worldwide.
Norgren, Buschjost, FAS, Herion and Maxseal are registered trademarks of IMI Precision Engineering companies. Due to our policy of continuous development, IMI Precision Engineering reserve the right to change specifications without prior notice. z8577BR en/10/17 Selected Images used under license from Shutterstock.com
Engineering GREAT Solutions
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