Float (single point) Level Switches

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		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 Back to top	Datasheet for side mounted models (PDF) Trimod Besta - Shipbuilding (PDF) AA 01 04 - spare parts drawing (PDF) Besta vs Mobrey comparison (PDF) Animation of a high temperature Trimod Besta switch (GIF) Animation of a standard Trimod Besta switch (GIF) Trimod Besta - complete catalogue (LTKEN1610) (PDF)
		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 Back to top	LS-7 - plastic models datasheet (PDF) Junction box alternatives V6 (PDF) LS-7 Plastic + TC20AL (Small) (JPG) LS-7 plastic models - installation instructions (Bulletin 78803, Rev.Y) (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	LS-7 - alloy + metallic models datasheet (PDF) Junction box alternatives V6 (PDF) 316SS LS-7 + 316SS IP65 junction box alternatives (JPG) LS-7 alloy - installation instructions (Bulletin 160375, Rev.F) (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	LS-3 family - datasheets (PDF) LS-3 - manual (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	Datasheet for top mounted models (PDF) Besta vs Mobrey comparison (PDF) AA 01 140 - spare parts drawing (PDF) AA 01 141 - spare parts drawing (PDF) Trimod Besta - complete catalogue (LTKEN1610) (PDF)
		Trimod Besta side mount pneumatic level switch Heavy duty float switch with pneumatic on / off output NOTE: proportional pneumatic output models also available (e.g. MV 01 04) for direct acting pneumatic operated process valves. 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 FPV: function tested 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, PV 01 140, FPV 01 04, FPV 01 146, F5DPV 01 04, F5DPV 01 146) with many other configurations built next business day (e.g. P 01 041, P 01 04, etc) Back to top	Trimod Besta - pneumatic models (PDF) PV 01 04 - spare parts drawing (PDF) FPxx + FMxx - functionally tested Supplier's Declaration of Conformity (PDF) Trimod Besta - complete catalogue (LTKEN1610) (PDF)
		Trimod Besta side mount proportional pneumatic control valve Heavy duty float switch with proportional pneumatic outputs NOTE: point level pneumatic switch models also available (e.g. PV 01 04). 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 MV: proportional pneumatic control valve Input: 1.4bar (max. 10bar) Output: proportional signal 0.2 » 1bar (3 » 15psi) FMV: function tested 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 Range of units available ex. stock (e.g. MV 01 04) with many other configurations built next business day (e.g. custom extension rod models) Back to top	Trimod Besta - pneumatic models (PDF) MV 01 04 - spare parts drawing (PDF) FPxx + FMxx - functionally tested Supplier's Declaration of Conformity (PDF) Trimod Besta - complete catalogue (LTKEN1610) (PDF)
		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 Back to top	Why have 4 floats when you can use one (JPG) Kari 1C, 1H + 1L - manual (PDF) Kari 2H, 2L, 2Y, 2A + 2HL - manual (PDF) Kari 3H, 3L, 3Y, 3A, 3HE, 3LE, 3YE + 3AE - manual (PDF) Kari 4H, 4L, 4Y + 4A - manual (PDF) Kari - float switch brochure (2018) (PDF) The Kari range (JPG)
		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 Now available in potable water variations! To understand just how the Kari range can work, please see our YouTube video Back to top	Why have 4 floats when you can use one (JPG) Kari C1C, C1H + C1L - manual (PDF) Kari C2H, C2Y, C2L, C2A + C2HL - manual (PDF) Kari C3H, C3L, C3HE, C3LE manual (PDF) Kari - float switch brochure (2018) (PDF) The Kari range (JPG)
		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 Back to top	Why have 4 floats when you can use one (JPG) Kari M1C, M1H + M1L - manual (PDF) Kari M2H + M2L - manual (PDF) Kari - float switch brochure (2018) (PDF) The Kari range (JPG)
		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 (Ø28mm 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 Back to top	CC Level - installation & operating instructions (v1.0) (PDF) CCS-1-FL-1-8Tx (stock) (PDF) CC Level - brochure (2023) (PDF)
		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 Back to top	LS-750P (016-4151) - datasheet (PDF) CCPL LS-750P - instructions (LS-750 + LS-3) (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	LS-1750 + LS-1755 - datasheet (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	Large Size Engineered Plastic specs (PDF) Gems Sensors - Reed switch protection (PDF)
		Gems Sensors LS-1700 top / bottom mount, small size float switches Stocked models include: 01701, 01702 & 011-1700 Back to top	LS-1700 - datasheet (PDF) Gems Sensors - Reed switch protection (PDF)
		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: Back to top	Large Size Alloys (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	LS-1950 - datasheet (PDF) LS-1950E - datasheet (Gems UK) (PDF) LS-1700, LS-1750, LS-1800, LS-1850, LS-1900, LS-1950 - manual (Bulletin 72947, Rev.Y) (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	SR 6 - datasheet (PDF)
		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 Back to top	LS-270 - catalogue (PDF) LS-270-E + LS-240-3E - catalogue (PDF) Mounting bildge switches (JPG) LS-270 - manual (PDF) LS-240-3E + LS-270-E - manual (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	LS-800-5 series - manual (PDF) Gems Sensors LS-800-5 - datasheet (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	LS-2050 + LS-52100 (Gems US) - datasheet (PDF) LS-52100E (Gems UK) - datasheet (PDF) LS-2050E (Gems UK) - datasheet (PDF) CCPL junction box alternatives (v6) (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	LS-10 specs (PDF) Gems Sensors - Reed switch protection (PDF)
		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 Back to top	Trimod Besta - complete catalogue (LTKEN1610) (PDF)
		Trimod Besta plastic industrial float level switches Corrosion resistant; PP, PVDF, PTFE ANSI, DIN, BS and JIS flanges Side and top mounting types Back to top	Trimod Besta - complete catalogue (LTKEN1610) (PDF)
		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 Back to top	Trimod Besta - complete catalogue (LTKEN1610) (PDF)
		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 Back to top	LS-3 special - p_n 76707 (PDF) LS-3 - manual (PDF) Gems Sensors - Reed switch protection (PDF)