LEVEL S WIT CHES – SINGLE POINT

LEVEL S WIT CHES – SINGLE POINT
Small Size­ ­­­– Alloys
Rugged Durability, With Broad Heat and Pressure Capabilities,
are Hallmarks of These Compact Switches
Ideal for shallow tanks or restricted spaces, or for low-cost, high volume use.
LEVEL SWITCHES – SINGLE POINT
LS-1700 Series –
Buna N Float
LS-1750 Series –
All Stainless Steel
LS-1700 Series –
Teflon® Float
Ro H S
G
EM
Ro H S
G
®
S CO PLIAN
M
T
EM
G
EM
G
T
EM
G
T
EM
G
T
Offer broad chemical compatibility for general purpose use.
Also ideal for oils and water.
LS-1700 Series
1/2" HEX
(12.7 mm)
L1= 9/16˝ (14.2 mm) N.O.; 13/16˝ (20.6 mm) N.C.
®
S CO PLIAN
M
T
1/8" NPT
1/8" NPT
1/2" HEX
(12.7 mm)
SPRING
L1†
3/4"
(19.1 mm)
1-1/2"
(38.1mm)
1" DIA.
(25.4 mm)
1/2" HEX
(12.7 mm)
2-21/64"
(59.1mm)
2-1/16" L1†
(52.4 mm)
FLAT
WASHER
1" DIA.
(25.4 mm)
EM
LS-1755 Series
1/2" HEX
(12.7 mm)
1"
(25.4 mm)
T
Stainless Steel Float and Stem
1/8" NPT
1/8" NPT
2-1/16"
(52.4mm)
®
S CO PLIAN
M
G
T
Teflon® Float
L1†
EM
Ro H S
®
S CO PLIAN
M
LS-1750 Series
Buna N Float
1-1/2"
(38.1 mm)
EM
Rugged construction suitable for most corrosive liquids, and for
high temperatures and pressures. Stainless steel is generally recognized
as safe (GRAS) with FDA for food contact regulations.
Dimensions
2-1/16"
(52.4 mm)
G
T
Ro H S
®
S CO PLIAN
M
Ro H S
®
S CO PLIAN
M
Ro H S
®
S CO PLIAN
M
Ro H S
®
S CO PLIAN
M
Ro H S
LS-1755 Series –
All Stainless Steel
1"
(25.4 mm)
1-1/2"
(38.1mm)
L1= 5/8˝ (15.7 mm) N.O.; 3/4˝ (19.1 mm) N.C.
1-7/32"
(31.0 mm)
1-45/64"
(42.8mm)
1-1/32" DIA.
(26.2 mm)
1-1/2" DIA.
(38.1 mm)
L1= 1/2˝ (12.7 mm) N.O. and N.C.
L1†
L1= 37/64˝ (14.5 mm) N.O.; 53/64˝ (20.8 mm) N.C.
†L1= Switch actuation level, nominal (based on a liquid specific gravity of 1.0).
Common Specifications
Electrical Termination: No. 22 AWG, 24˝ L., Polymeric Lead Wires,
(except Part No. 79990 which has Teflon® Lead Wires).
Approvals: S eries Nos. LS-1700, LS-1750 and LS-1755 are U.L. Recognized – File No. E45168 and CSA Listed – File No. 30200.
RoHS – In compliance with EU-directive 2011/65/EC requirements for chemicals and substances.
Switch Operation: Units are shipped N.O. unless otherwise specified. Selectable, N.O. or N.C., by inverting float on unit stem
(except for LS-1700 Series switches with Teflon® Floats; see selection in “How to Order” table).
How To Order – Select Part Number based on specifications required.
Material
Series
Number
Stem and
Mounting
Brass
LS-1700
316 S.S.
Float
Other
Wetted
Buna N
Min. Liquid
Sp. Gr.
Operating Temperature
Pressure,
PSI, Max.**
.45
Water: to 180°F (82.2°C)
Oil: -40°F to +300°F (-40°C to +149°C)
300
.85
-40°F to +250°F (-40°C to +121.1°C)
1000
316 S.S.,
Epoxy
316 S.S.
Teflon®
LS-1750
316 S.S.
316 S.S.
316 S.S.
.70
LS-1755
316 S.S.
316 S.S.
316 S.S.
.90
-40°F to +300°F (-40°C to +148.9°C)
-40°F to +480°F (-40°C to +204.4°C)
-40°F to +300°F (-40°C to +148.9°C)
100
275
Switch*
SPST
Part
Number
20 VA
01701
20 VA
01702
20 VA, N.O.
26791
20 VA, N.C.
27980
20 VA
01750
20 VA
79990
20 VA
01755
* See “Electrical Data” on Page X-5 for more information.
** Higher pressures are temperature dependent.
A-10
Visit www.GemsSensors.com for most current information.
Sm. Alloy Floats / p1of1 / 22-OCT-14
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