Gems Sensors & Controls LS-2050 Specifications
UL Approved
Explosion-Proof
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3-7/8"±1/8"
(98.4 mm)
2-3/8"±1/8"
(60.3 mm)
1" NPT
5/8"†
(15.9 mm)
APPROX. ACTUATION LEVEL
CONTACTS TRANSFER ON
ASCENDING FLUID
LEVEL (±1/4" OF )
C
L
3-7/16"
(87.3 mm)
1/2" NPT
1-3/8"
(34.8 mm)
UP
7/8"
(22.2 mm)
4-1/8"
APPROX.
(104.8 mm)
2" DIAMETER BALL FLOAT
3-5/8"
APPROX.
(92.0 mm)
1" NPT
1"†
(25.4 mm)
APPROX. ACTUATION LEVEL CONTACTS
TRANSFER ON ASCENDING FLUID LEVEL
5-1/16"
(128.6 mm)
5-9/32"
(134.1 mm)
APPROX.
3-1/4"
(82.5 mm)
APPROX.
1" NPT
1"†
(25.4 mm)
APPROX. ACTUATION LEVEL CONTACTS
TRANSFER ON ASCENDING FLUID LEVEL
5-1/16"
(128.6 mm)
3-1/2"
DIA. REF.
13/16" REF.
1/2" NPT
PORTS
Side View
Top View
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
inaccessible tops or bottoms, or at intermediate locations in larger
tanks. Operation is positive and dependable. The float pivots with
LEVEL SWITCHES – SINGLE POINT
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 – 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.
Dimensions
Typical Installation
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.
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† 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).
Explosion-Proof Versions
CSA or FM Approved versions are available in all-stainless steel configurations only.
Typical Example (P/N 55690 Shown):
Visit www.GemsSensors.com for most current information.
For Remote Alarms –
See Page E-29
• Adjustable Volume
• Indoor Outdoor
• Solid-State
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FM
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
FLOAT TYPE
LEVEL SWITCHES – SINGLE POINT
How To Order – Select Part Number based on specifications required.
Materials
Series
Number
LS-2050
LS-52100
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
Stem and
Mounting
Brass Buna N
316
Stainless
Steel
316
Stainless
Steel
Stainless
Stainless
Float
316
Steel
304
Steel
Other
Wetted
316 Stainless Steel,
Beryllium Copper,
Teflon®, Ceramic
Stainless Steel,
Teflon®, Ceramic
430 Stainless Steel,
Teflon®, Ceramic
SPDT, 20 VA
SPDT, 20 VA
SPST, 100 VA, N.O.
SPST, 100 VA, N.C.
SPDT, 20 VA
SPST, 100 VA, N.O.
SPST, 100 VA, N.C.
Switch
Part Numbers
1
2, 4
2, 4
3
3
Standard
Versions
30288 — —
30290 175650
48068 — —
48069 — —
52100 — 121753
116971 — —
116972 — —
With Bellows
(Details Below)
Explosion-Proof
55690
– Stock Items.
Visit www.GemsSensors.com for most current information.
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