Float (single point) Level Switches

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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 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)
		Gems Sensors LS-750P custom float switch *discontinued - refer brass LS-750* (p/n: 149350) for replacement 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)
		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)
		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)