FLOAT TYPE

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 withinaccessible 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.
LS-2050 Series – All-Stainless Steel

Ro H SGEM

Ro H SG®

S COMPLIANT

Ro H SGEMMPLIANEM

Ro H SG®

S COMPLIAN

TRo H SG®

S COLS-52100 Series – All Stainless SteelTGeneral purpose materials designed to provide
reliable service in oils and water.

EMMPLIANEM®

S COMPLIANT

Ro H SG®

S COT

Ultimate strength: for pressures to 900 PSIG
and temperatures to 300°F (148.9°C).

EM®

S COMPLIAN

T

Rugged, all-stainless steel unit offers broadchemical compatibility at temperatures to 300°F(148.9°C).

Dimensions
LS-2050 Series

1/2" NPT1" NPTUPAPPROX. ACTUATION LEVELCONTACTS TRANSFER ON
ASCENDING FLUIDLEVEL (±1/4" OF CL)
5/8"†(15.9 mm)

1-3/8"(34.8 mm)3-7/16"(87.3 mm)LS-52100 Series
APPROX. ACTUATION LEVEL CONTACTS
TRANSFER ON ASCENDING FLUID LEVEL
1" NPT

3-7/8"±1/8"(98.4 mm)

APPROX. ACTUATION LEVEL CONTACTS
TRANSFER ON ASCENDING FLUID LEVEL

5-1/16"(128.6 mm)

1" NPT1"†(25.4 mm)2-3/8"±1/8"(60.3 mm)

7/8"
(22.2 mm)

LEVEL SWITCHES – SINGLE POINT

LS-2050 Series – Brass and Buna N

Typical Installation

5-1/16"(128.6 mm)
1"†(25.4 mm)3-5/8"APPROX.
(92.0 mm)3-1/4"(82.5 mm)
APPROX.

4-1/8"APPROX.
(104.8 mm)
2" DIAMETER BALL FLOAT

5-9/32"(134.1 mm)
APPROX.

†Approximate de-actuation level, nominal (based on a liquid specific gravity of 1.0).

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

For Remote Alarms –See Page E-27
• Adjustable Volume• Indoor Outdoor• Solid-StateAlloy Side Mount Series / p1of2 / 2021-10-26

Visit www.GemsSensors.com for most current information.

A-15

FLOAT TYPE

Common Specifications
Electrical Termination: No.18 AWG, 24˝ L., Polymeric Lead Wires.
Approvals: L S-2050 Series Switches are U.L. Recognized – File No. E45168 and are CSA Listed.
RoHS – In compliance with EU-directive 2011/65/EC requirements for chemicals and substances.

LEVEL SWITCHES – SINGLE POINT

Mounting Attitude: Horizontal, ±15°.

Performance
LS-2050 Series

LS-52100 Series

Brass Mounting/Buna-N Float

All-Stainless SteelOperating Temperature

Water: to +180° F (82.2° C)
Oil: -40° F to +250° F (-40° C to +121° C)-40° F to +300° F (-40° C to +148.9° C)

Pressure, PSIG Max. @ 70° F

150900500Min. Liquid Sp. Gr.

.8.9.85

Switch Differential in Liquid

1/2" Minimum

Approximately 3/4"

How To Order – Select Part Number based on specifications required.
Materials
SeriesNumberLS-2050

LS-52100

Part Numbers
SwitchStandard
Versions

With Bellows(Details Below)

1

Stem andMounting

Float

Other
WettedBrass

Buna N316 Stainless Steel,
Beryllium Copper,
Teflon®, Ceramic

SPDT, 20 VA

30288

—316
StainlessSteel

316
StainlessSteel

SPDT, 20 VA
Stainless Steel,Teflon®, Ceramic

30290

175650

SPST, 100 VA, N.O.2, 448068—

SPST, 100 VA, N.C.

48069

—

SPDT, 20 VA

52100

—

3

SPST, 100 VA, N.O.

116971—

SPST, 100 VA, N.C.3

116972—316
Stainless
Steel

304
StainlessSteel2, 4430 Stainless Steel,Teflon®, Ceramic

Notes
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-16– Stock Items.

Visit www.GemsSensors.com for most current information.

Alloy Side Mount Series / p2of2 / 2021-10-26