30290

## Large Size – Alloys 

Side Mounting Switches Solve the Problem of Inaccessible Tank Tops & Bottoms These units solve the problem of point level sensing in tanks with Typical Installation inaccessible tops or bottoms, or at intermediate locations in larger tanks.   Operation is positive and dependable. The float pivots with changing liquid level, displacing a shuttle which magnetically actuates a hermetically sealed switch within the unit. Installation is through the tank side at the detection point. ~~a~~ l 

LS-2050 Series – Brass and Buna N 

LS-2050 Series – All-Stainless Steel 

## LS-52100 Series – All Stainless Steel 

General purpose materials designed to provide reliable service in oils and water. 

Ultimate strength: for pressures to 900 PSIG and temperatures to 300°F (148.9°C). Explosion-proof models available. 

Rugged, all-stainless steel unit offers broad chemical compatibility at temperatures to 300°F (148.9°C). Explosion-proof models available. 

Dimensions 

**LS-2050 Seeirs** 

**LS-52100 Seeirs** 

**==> picture [516 x 143] intentionally omitted <==**

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APPROX. ACTUATION LEVEL CONTACTS  APPROX. ACTUATION LEVEL CONTACTS<br>APPROX. ACTUATION LEVEL  TRANSFER ON ASCENDING FLUID LEVEL  TRANSFER ON ASCENDING FLUID LEVEL<br>1/2 "  NPTUP 1 "  NPT CONTACTS TRANSFER ON ASCENDING FLUID LEVEL (±1/4 "  OF     ) C L  (15.9 mm)5/8 " † 1 "  NPT (128.6 mm)5-1/16 "  (25.4 mm)1 " † 1 "  NPT (128.6 mm)5-1/16 " (25.4 mm)1 " †<br>7/8 " 2-3/8 " ±1/8 " 3-5/8 "  3-1/4 "<br>(22.2 mm) (60.3 mm) APPROX. (82.5 mm)<br>" (92.0 mm) APPROX.<br>1-3/8<br>afi (34.8 mm) gi 4 a Bf<br>Se (87.3 mm)3-7/16 " 3-7/8(98.4 mm) " ±1/8 " APPROX.4-1/8 Ys "  t 5-9/32 " 4<br>LL &<br>(104.8 mm) (134.1 mm)<br>2 "   DIAMETER BALL FLOAT APPROX.<br>† Approximate de-actuation level, nominal (based on a liquid specific gravity of 1.0). * Switch Mounting dimensions are the same as shown on<br>**----- End of picture text -----**<br>


* Switch Mounting dimensions are the same as shown on the LS-2050 Series drawing (far left). 

## Explosion-Proof Versions 

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CSA or FM Approved versions are available in all-stainless steel configurations only.<br>Typical Example (P/N 55690 Shown):<br>Top View<br>1/2 "  NPT<br>3-1/2 " PORTS<br>DIA. REF.<br>13/16 n° "  REF. ,i -<br>_<br>Side View<br>**----- End of picture text -----**<br>


For Remote Alarms – See Page E-29 

- Adjustable Volume 

- Indoor Outdoor 

- Solid-State 

**A-16** 

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**FLOAT TYPE** 

## Common Specifications 

**Electrical Termination:** No.18 AWG, 24˝ L., Polymeric Lead Wires. 

**Approvals:** LS-2050 Series Switches are U.L. Recognized – File No. E45168 and are CSA Listed. Explosion-proof units are approved for Class I, Division 1, Group D hazardous areas. **Mounting Attitude:** Horizontal, ±15°. 

## Performance 

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How To Order **–** Select Part Number based on specifications required. 

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Materials Part Numbers<br>NumberSeries Stem andMounting Float WettedOther Switch [1] StandardVersions (Details Below)With Bellows Explosion-ProofFM<br>316 Stainless Steel,<br>Brass Buna N Beryllium Copper, SPDT, 20 VA 30288 — —<br>Teflon [®] , Ceramic<br>LS-2050 SPDT, 20 VA 30290 175650 55690<br>316 316<br>Stainless Stainless Stainless Steel, SPST, 100 VA, N.O. [2, 4] 48068 — —<br>Steel Steel Teflon [®] , Ceramic SPST, 100 VA, N.C. [2, 4] 48069 — —<br>SPDT, 20 VA 52100 — 121753<br>316 304<br>LS-52100 Stainless Stainless 430 Stainless Steel, SPST, 100 VA, N.O. [3] 116971 — —<br>Steel Steel Teflon [®] , Ceramic SPST, 100 VA, N.C. [3] 116972 — —<br>**----- End of picture text -----**<br>


Notes 

– Stock Items. 

1. See “Electrical Data” on Page X-5 for more information. 

2. Not CSA Approved. 

3. Not U.L. Recognized or CSA Approved. 

4. UL Resistive Rated 

**A-17** 

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