Trimod Besta side mount float level switch

  • Heavy duty float switch
  • Versatile, three module ("tri-mod") construction
    • Easy to customise  & repair
  • Available with a range of approvals (e.g. IECEx, ATEX, etc), certificates (e.g. SIL1 & SIL2), reports (e.g. materials & functional tests) & marine insurer approvals (e.g. ABS, GL, DNV, Lloyd's etc)
  • Mounting: range of options
    • Typically via counter flange or directly to tank wall via bolts
    • Flanged units also available
  • Wetted materials: 316SS
    • Wide range of other materials including hastelloy-C available on request
  • Output: SIL1 SPDT microswitches are standard, but a choice of:
    • Gold contacts for low current, low voltage applications (e.g. simple device in intrinsically safe circuits)
    • Namur proximity switches
    • High temperature
    • IECEx Ex de
    • Pneumatic (on / off or proportional) - refer pneumatic models
  • Temperature: 0 » 300°C (standard)
    • Higher temperature models available
  • Pressure: standard up to 25bar @ 300°C
  • S.G.: >0.7 (special models available on request)
  • Electrical connection: weatherproof (IP65), typically with M20 cable gland
  • Options:
    • Counter flange: weld to tank for easy mounting - available in 316SS & carbon steel
    • Test actuator: mechanical test actuator allows for testing of the switch during routine preventative maintenence
    • Pressure chambers: remove the float from inside the process tank - custom built to meet specific application needs
    • Top mount, bent rod & other configurations
  • Big range of units available ex. stock (e.g. AA 01 04, A 01 041, AA 01 093, AA 01 051E15, ZKK5 01 04) with many other configurations built next business day
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Gems Sensors LS-7 Side mount, Engineered Plastics, Low Cost

  • Use on liquids with SG’s as low as 0.55
  • Materials: model dependent - Polypropylene, Nylon, Versaplast
  • Temperature: -40 » 148.9°C
  • Pressure: 3, 7 & 10 bar (model dependent)
  • Output: SPST reed switch (20VA)
    • NO/NC selectable
  • Process connection: various connections
    • ½”NPT threaded (some models available with BSP)
    • external & internal mount models
    • expansion plug
  • Electrical connection:  24" flying leads - NOT IP65 (weatherproof)
    • The Type 7 models have a ½" NPT threaded conduit connection which can be used for easy weatherproofing of the elctrical connection.
    • Optional junction box (AL or 316SS) with pre-wired terminal can be added to the Type 7 on request.
  • Typical stock units include: 131100, 140620, 160450, 160460, 164520, 165570, 165800, 177100, 181041, 181291, 182600, 189423 & 191080
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Gems Sensors LS-7 Side mount, Stainless Steel & Alloys

  • Corrosion resistant, rugged
  • Use on liquids with SG’s as low as 0.55
  • Materials: model dependent - 316 stainless steel, zinc / nylon or zinc / polypropylene
  • Temperature: -40 » 148.9°C
  • Pressure: 7, 10 & 20 bar (model dependent)
  • Output: SPST reed switch (20VA)
    • NO/NC selectable
  • Process connection: various connections
    • ½”NPT threaded (some models available with BSP)
    • external & internal mount models
    • expansion plug
  • Electrical connection:  24" flying leads - NOT IP65 (weatherproof)
    • The Type 7 models have a ½" NPT threaded conduit connection which can be used for easy weatherproofing of the elctrical connection.
    • Optional junction box (AL or 316SS) with pre-wired terminal can be added to the Type 7 on request.
  • Typical stock units include: 155680, 164860, 164870
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Trimod Besta top mount float level switch

  • Heavy duty float switch
  • Versatile, three module ("tri-mod") construction
    • Easy to customise  & repair
  • Available with a range of approvals (e.g. IECEx, ATEX, etc), certificates (e.g. SIL1 & SIL2), reports (e.g. materials & functional tests) & marine insurer approvals (e.g. ABS, GL, DNV, Lloyd's etc)
  • Mounting: range of options
    • Typically directly to tank via square flange (P.C.D. 92mm)
    • Most flange styles also available
  • Wetted materials: 316SS
    • Wide range of other materials including hastelloy-C available on request
  • Output: emptying or filling pump control with a single switch or point level (customised onsite)
    • SIL1 SPDT microswitches are standard, but a choice of:
      • Gold contacts for low current, low voltage applications (e.g. simple device in intrinsically safe circuits)
      • Namur proximity switches
      • High temperature
      • IECEx Ex de
      • Pneumatic (on / off or proportional) - refer pneumatic models
  • Temperature: 0 » 300°C (standard)
    • Higher temperature models available
  • Pressure: standard up to 25bar @ 300°C
  • S.G.: >0.45 (special models available on request)
  • Electrical connection: weatherproof (IP65), typically with M20 cable gland
  • Options:
    • Side mount, bent rod & other configurations
  • Big range of units available ex. stock (e.g. AA 01 140, AA 01 141, ZKK5 01 145, ZKK5 01 146) with many other configurations built next business day
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Gems Sensors LS-3 compact, engineered plastic float level switch

  • Compact, durable float type level switches for OEM & low cost applications
  • Mounting: top or bottom mounted (vertical) - range of thread types available
  • Wetted materials: choice of Polypropylene (PP), Polysulfone, Nylon & FDA-approved PVDF
  • Output: SPST (swappable NO / NC on-site) reed switch, 20VA
  • S.G.: choice of floats for liquids with specific gravities as low as 0.45
  • Temperature: -40 » 121°C
  • Pressure: from 3 » 10bar (50»150PSIg), depending on the model
  • Electrical connection: typically lead wires, not IP65 (i.e. not weatherproof without additional protection)
  • Special models available for unusual applications, including stilling tube / sloosh shield for turbulent tanks.
  • Stocked models include: 116826, 142505, 142545, 163931, 171512, 173250, 189787, 201540, 220280, 42295, 65656 & 76707
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Trimod Besta side mount pneumatic level switch

  • Heavy duty float switch with pneumatic outputs
  • Versatile, three module ("tri-mod") construction
    • Easy to customise  & repair
    • Upgrade / change a microswitch (SPDT) model to pneumatic if requied
  • Available with a range of approvals, certificates (e.g. SIL1 & SIL2), reports (e.g. materials & functional tests) & marine insurer approvals (e.g. ABS, GL, DNV, Lloyd's etc)
  • Mounting: range of options
    • Typically via counter flange or directly to tank wall via bolts
    • Flanged units also available
  • Wetted materials: 316SS
    • Wide range of other materials including hastelloy-C available on request
  • Output: choice of on/off or proportional output switch modules
    • PV: on / off (3/2 way valve) switch
    • MV: proportional controller (e.g. air actuated valves)
    • FxV: function tested (e.g. FPV, FMV) models available for hazardous area applications
  • Pneumatic details:
    • Control Pressure: 10bar max.
    • Leakage: 1cm³/min max. @ 10bar
    • Air flow: 90NL/min air flow @ 6bar
    • Pressure drop: 1 bar
    • Air quality: class 4, ISO 8571 (max. particle size 15µm, max. particle density 8mg/m³)
  • Temperature: 1 » 250°C (media), 1 » 80°C (ambient)
    • Higher temperature models available
  • Pressure: standard up to 25bar @ 250°C
  • S.G.: >0.7 (special models available on request)
  • Electrical connection: weatherproof (IP65), typically with M20 cable gland
  • Options:
    • Counter flange: weld to tank for easy mounting - available in 316SS & carbon steel
    • Test actuator: mechanical test actuator allows for testing of the switch during routine preventative maintenence
    • Pressure chambers: remove the float from inside the process tank - custom built to meet specific application needs
    • Top mount, bent rod & other configurations
  • Big range of units available ex. stock (e.g. PV 01 04, MV 01 04, PV 01 140, MV 01 140, FPV 01 04, FPV 01 146, F5DPV 01 04, F5DPV 01 146) with many other configurations built next business day
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Kari (standard) S series tilt float switch

  • Large, buoyant float for black & dirty water
    • S.G > 0.65
    • e.g. sewage / wastewater
  • Up to four switch points from a single float
    • high alarm, low alarm & pump controller in one float!
  • Wide range of cable material choice available
  • Temp: standard units up to 55°C (75°C on special request)
  • Optional gold contacts (Au models) for low current / voltage applications
  • Typically stocked models (cable lengths may vary): 1C, 1H, 1HEAu, 1L, 1LAu, 1LEAu, 2H, 2HL, 2L, 3H, 3HE, 3HEAu, 3L, 3LEAu & 4H
  • To understand just how the Kari range can work, please see our YouTube video
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Kari (compact) C series tilt float switch

  • General purpose applications
    • S.G > 0.75
    • e.g. dirty water
  • Pump controller with isolated level alarm in a single float
  • Wide range of cable material choice available
  • Temp: standard units up to 55°C (75°C on special request)
  • Optional gold contacts (Au models) for low current / voltage applications
  • Typically stocked models (cable lengths may vary): C1C, C1CAu, C1CKS, C2C, C2CAu & C3H
  • To understand just how the Kari range can work, please see our YouTube video
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Kari (mini) M series tilt float switch

  • Small float for clean liquids
    • S.G. > 0.85
    • e.g. clean water
  • Pump control with a single float
  • Wide range of cable material choice available
  • Temp: standard units up to 55°C (75°C on special request)
  • Optional gold contacts (Au models) for low current / voltage applications
  • Typically stocked models (cable lengths may vary): M1C, M1CK, M1H, M1L, M2H & M2L
  • To understand just how the Kari range can work, please see our YouTube video
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Gems Sensors LS-750P custom float switch

  • Hybrid unit custom designed for OEM applications like rain water tanks with small openings
    • Weighted unit with submersible cabling & slosh shield to prevent switch chatter in turbulent liquid
    • Combination of Gems LS-3 (p/n: 142545) & LS-750 (p/n: 149350), both of which are also stocked parts
  • Mounting: hung directly into tank
  • Wetted materials: brass, PP (polypropylene float) & PVC cable
  • Output: SPST (swappable NO / NC on-site) reed switch (20VA)
  • Temperature: ranges -40 » 65°C
  • Pressure: up to 10bar @ 30°C
  • S.G.: (vary between models) >0.9
  • Electrical connection: waterproof, 7.5m PVC cable connection
  • Stocked models: 016-4151
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CCS single point float level switches

  • Designed for clean liquids - e.g. fresh water
  • Wide choice of process connections - flanged, threaded (incl. compression fittings), tri-clamp or something custom!
  • Max. 1200mm overall length
  • Wetted parts: 316SS (Ø29mm OD floats)
  • Outputs: SPDT or SPST (N.O or N.C) reed switches
  • Media: 120°C, 9.8 bar, S.G.> 0.8
  • Simple device (AS / NZS 60079.11) compliant versions available
  • Stocked models (CCS-1-FL-1/8T CCS-1-FL-1/8T90)
    • 300mm lead wire
    • G1/8" (BSPP) connection with locknut
    • Ø8mm OD tube
    • N.O or N.C switching
    • Switch: 500mA (res) @ 32Vac/dc
    • 316SS
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Gems Sensors LS-30, LS-74780 + LS-1900TFE engineered plastic float switches for aggressive or ultra-pure liquids

  • Polysulfone, CPVC, PTFE
  • Use on liquids with Specific Gravities as low as 0.55
  • Temperatures -40 to 107°C, 82°C, 149°C respectively
  • Pressure ranges to 3 bar, 1 bar, 2 bar respectively
  • SPST reed switch 20VA, 240VAC, NO/NC selectable
  • 1/4” NPT mounting
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Gems Sensors LS-1750 & LS-1755 top / bottom mount, small size, stainless steel float switches

  • 316 stainless steel wetted parts
  • Corrosion resistant materials, rugged
  • Temperature: from 40 up to 249°C - dependent of model
  • Pressure ranges 7 bar, model to 70bar
  • SPST reed switch 20VA, 240VAC, NO/NC selectable
  • 1/8” NPT or BSPT (R1/8") threaded
  • Typical stock units include: 01750, 01755 & 79990
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Gems Sensors LS-1700 top / bottom mount, small size float switches

  • Stocked models include: 01701, 01702 & 011-1700
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Gems Sensors LS-1800 + LS-1900 alloy float switches for top mounting

  • Brass & 316 Stainless Steel with Buna N/Teflon floats
  • Use on liquids with Specific Gravities as low as 0.55
  • Temperatures fluid dependent
  • Pressure ranges to 10 & 20 bar
  • SPST reed switch 20VA & 100VA, 240VAC, NO/NC
  • 1/8” & 1/4” NPT mounting
  • Typical stock units include: 
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Gems Sensors LS-1950 + LS-1950E large size, stainless steel, high pressure float switch

  • Single point float switch for heavy duty applications
  • Materials: 316 stainless steel
  • Temperature: -40 » 149°C (optional model up to to 249°C)
  • Pressure: LS-1950: 51bar, LS-1950E: 30bar
  • Specific gravity: >0.75
  • Switch: choice of outputs available, refer datasheets
    • SPST (relay) reed switch: 20VA or 100VA - swappable NO / NC
    • SPDT (relay) reed switch: 20VA (LS-1950E)
  • Process connection: G¼” or ¼" NPT threaded
  • Typical stock units include: 011-1950, 01950, 26717 & 79999
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Besta SR6 bilge level switch for marine applications

  • Designed for marine applications
    • Switch carries Germanischer Lloyd (GL)
    • Slosh shield stills liquid to prevent switch "chatter"
    • Heavy duty applications
  • Mounting: directly to tank wall or via U-bolt
  • Wetted materials: 316SS
  • Output: choice of SPDT (40VA change-over)  or SPST (100VA swappable NO / NC on-site) reed switch
  • Temperature: ranges -40 » 80°C
  • Pressure: up to 16bar
  • S.G.:>0.75
    • Electrical connection: waterproof (IP68), 2m PVC cable connection
  • Test actuator: mechanical test actuator allows for testing of the switch during routine preventative maintenence
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Gems Sensors LS-240-3E + LS-270 / LS-270-E bilge (marine) level switches

  • Designed for marine applications
    • Some units (LS-240-3E & LS-270-E) have Germanischer Lloyd (GL) or American Bureau of Shipping (ABS) approval
    • Can be ordered with Certificate of Conformance from factory 
    • Slosh shield stills liquid to prevent switch "chatter"
    • ATEX certified (Ex ia) model available LS-240-3E-Exi
  • Heavy duty applications (approx. 30mm float movement for switching)
  • Mounting: directly to tank wall or via U-bolt
  • Wetted materials: (vary between models) brass, 316SS, lucite & Buna N
  • Output: SPST (swappable NO / NC on-site) reed switch - choice of ratings (20 / 50 / 100VA)
  • Temperature: ranges -40 » 60°C (80°C option available)
  • Pressure: up to 10bar
  • S.G.: (vary between models) >0.53
  • Electrical connection: waterproof, 2m cable connection
  • Stocked models include:
    • LS-240-3E: 010-0965, 010-3433, 010-3434, 010-5002, 016-1418, 053-1221
    • LS-270: 43760, 43765
    • LS-270-E: 010-0349, 010-0350
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Gems Sensors LS-800-5 single point bottle switch

  • When a Switch Won’t Fit In the Tank, Use a Non-Intrusive Bottle Type
  • Wetted parts: 316SS, brass, Buna-N, Viton, copper or AL
  • Stocked units: 172635
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Gems Sensors LS-2050 / LS-2050E + LS-52100 / LS-52100E large stainless steel & alloy float switches

  • Heavy duty applications with ½ & ¾” switching differentials
  • Materials: alternatives available include brass, 316SS & Buna N (float only)
  • Temperature: -40 » 148°C
  • Fluid: S.G. > 0.8
  • Pressure: 10, 34 & 62 bar (model dependent)
  • Output: SPST reed switch (20VA or 100VA)
      • NO/NC selectable
      • Very low current with 240Vac
  • Process connection: 1" NPT or R1" (BSPT) male thread
  • Electrical connection:  24" flying leads - NOT IP65 (weatherproof)
  • Optional aluminium or 316SS junction box (IP65) with pre-wired terminal strip
    • 240Vac version available with lock-out screw
  • Typical stock units include: 010-3462, 010-3463, 30288 & 52100
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Gems Sensors LS-10 interstitial level switch

  • Valox (R) housing, polyethylene float
  • Senses presence of fluid in double wall tanks, pipes
  • Temperature ranges -40 to 80°C
  • Pressure atmospheric
  • Fluids sensed; hydrocarbons or water
  • SPST reed switch 10W, 50-120VDC Resistive only
  • 16mm depth, 38mm wide
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Trimod Besta industrial float level switches

  • Flanges to ANSI, BS DIN, or JS
  • Pressures to CI 2500ANSI, PN 315DIN
  • High and low temperature options
  • Stainless grades to suit applications
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Trimod Besta plastic industrial float level switches

  • Corrosion resistant; PP, PVDF, PTFE
  • ANSI, DIN, BS and JIS flanges
  • Side and top mounting types
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Trimod Besta hazardous area approved float level switches

  • IECEx, US, Canadian & European approvals
  • Flameproof & intrinsically safe
  • SIL certified
  • Top & side mount
  • Function tested pneumatic models
  • Wide range available ex. stock
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Gems Sensors LS-3 special - 76707 low activation point float switch

  • Compact, durable 76707 float type level switch for OEM & low cost applications
    • Low float centre of gravity ensures switching very close (~16mm) to the end of float shaft
  • Mounting: top or bottom mounted (vertical) - range of thread types available
  • Wetted materials: polysulfone, Buna-N & epoxy
  • Output: SPST, N.C. dry reed switch, 20VA
  • S.G.: may be used on water, some oils & chemicals
  • Temperature: -40 » 82°C
  • Pressure: from 3 bar (50PSIg)
  • Electrical connection: 72" PVC flying leads, not IP65 (i.e. not weatherproof without additional protection)
  • Other LS-3 models available ex. stock
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