LEVEL S WIT CHES – SINGLE POINT

LEVEL S WIT CHES – SINGLE POINT
Large Size – Alloys
Side Mounting Switches Solve the Problem of Inaccessible Tank Tops & Bottoms
LEVEL SWITCHES – SINGLE POINT
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 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
Ro H S
G
EM
G
T
Ro H S
G
EM
LS-52100 Series – All Stainless Steel
EM
Ro H S
G
®
S CO PLIAN
M
T
Ro H S
G
®
S CO PLIAN
M
ved
UL Appro roof
-P
n
io
s
Explo
Ro H S
®
S CO PLIAN
M
Typical Installation
T
General purpose materials designed to provide
reliable service in oils and water.
EM
EM
®
S CO PLIAN
M
T
Ro H S
G
®
S CO PLIAN
M
T
Ultimate strength: for pressures to 900
PSIG and temperatures to 300°F (148.9°C).
Explosion-proof models available.
EM
®
S CO PLIAN
M
T
Rugged, all-stainless steel unit offers broad
chemical compatibility at temperatures to 300°F
(148.9°C). Explosion-proof models available.
Dimensions
LS-2050 Series
1/2" NPT
APPROX. ACTUATION LEVEL
CONTACTS TRANSFER ON
ASCENDING FLUID
LEVEL (±1/4" OF CL)
5/8"†
(15.9 mm)
1" NPT
UP
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" NPT
1"†
(25.4 mm)
2-3/8"±1/8"
(60.3 mm)
7/8"
(22.2 mm)
1-3/8"
(34.8 mm)
3-7/16"
(87.3 mm)
LS-52100 Series
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).
Explosion-Proof Versions
CSA or FM Approved versions are available in all-stainless steel configurations only.
Typical Example (P/N 55690 Shown):
Top View
1/2" NPT
PORTS
3-1/2"
DIA. REF.
For Remote Alarms –
See Page E-27
• Adjustable Volume
• Indoor Outdoor
• Solid-State
13/16" REF.
Side View
A-16
Visit www.GemsSensors.com for most current information.
Alloy Side Mount Series / p1of2 / 25-NOV-14
FLOAT TYPE
Common Specifications
Electrical Termination: No.18 AWG, 24˝ L., Polymeric Lead Wires.
LEVEL SWITCHES – SINGLE POINT
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.
RoHS – In compliance with EU-directive 2011/65/EC requirements for chemicals and substances.
Mounting Attitude: Horizontal, ±15°.
Performance
LS-2050 Series
LS-52100 Series
Brass Mounting/Buna-N Float
All-Stainless Steel
Operating 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
150
900
500
Min. 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.
Series
Number
LS-2050
LS-52100
Materials
Part Numbers
Switch
Standard
Versions
With Bellows
(Details Below)
Explosion-Proof
30288
—
—
1
Stem and
Mounting
Float
Other
Wetted
Brass
Buna N
316 Stainless Steel,
Beryllium Copper,
Teflon®, Ceramic
SPDT, 20 VA
316
Stainless
Steel
316
Stainless
Steel
SPDT, 20 VA
Stainless Steel,
Teflon®, Ceramic
30290
175650
55690
SPST, 100 VA, N.O.2, 4
48068
—
—
SPST, 100 VA, N.C.
316
Stainless
Steel
304
Stainless
Steel
48069
—
—
SPDT, 20 VA
52100
—
121753
SPST, 100 VA, N.O.3
116971
—
—
SPST, 100 VA, N.C.3
116972
—
2, 4
430 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
Alloy Side Mount Series / p2of2 / 25-NOV-14
FM
—
– Stock Items.
Visit www.GemsSensors.com for most current information.
A-17
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