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LEVEL SWITCHES – SINGLE POINT
Series
Material Min. Liq.
Sp. Gr. Operating Temperature Pressure
PSI, Max.
Switch1
Part
Number
Stem and
Mounting Float Other
Wetted
Level
SPST Temperature3
TH800
Temp./
Level
Brass Buna N
Beryllium
Copper,
Hysol
.75 Water: to 180°F (82°C)
Oil: -40°F to +230°F (-40°C to +110°C) 150 20 VA, N.O.
N.C., open on
+150°F ±10°F, incr. 57143
N.O., close on
+150°F ±10°F, incr. 57144
LS-38760 Aluminum Buna N S.S., Hysol .55 -40°F to +180°F (-40°C to +82°C) 150 20 VA, N.C. — 38760
LS-270 316 S.S. Buna N
Beryllium
Copper,
Copper
Nickel,
Polycarb.
304 S.S.
.55 -40°F to +140°F (-40°C to +60°C) 150
20 VA, N.O.
—
43765
20 VA, N.C. 43760
50 VA2, N.O. 43980
50 VA2, N.C. 43982
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1-1/4" DIA.
(31.75 mm)
5-3/32"
(129.4 mm)
1-1/2"
(38.1 mm)†
1-3/4"
(44.5 mm)
4-1/4"
(108 mm)
5/8" HEX
(15.9 mm)
1/4" NPT
27/32"
(21.4 mm)
1-7/8" DIA.
(47.6 mm)
4-1/4"
(108 mm)
1/4" NPT
1-1/16"
(27.0 mm)
1-1/4"
(31.8 mm)†
1-13/16"
(46.1 mm)
3-3/16"
(81.0 mm)
FLOAT
CUSHION
FLOAT
CUSHION
3/16" DIA.
(4.7 mm)
3-3/16"
(81 mm)
1-3/8" ± 1/4"
(34.9 mm) †
2-19/32" DIA.
(66 mm)
9/32" DIA.
(7.1 mm)
2 HOLES
SLOSH
SHIELD
CUT
AWAY
2-9/16"
(65 mm)
1-3/4"
(44.5 mm)
2-1/2"
(63.5 mm)
CLOSED
OPEN
TH800
Specialty Switches
GEMS Excels in Switches for Special Requirements
The products below are examples of the custom engineering GEMS can provide to meet specific
application needs. These units are ideal for use in oils and water.
TH800
SeriesTemperature/
Level Switch
LS-38760 Series –
Cushioned Float
LS-270 Series –
Bracket Mounting
Slosh Shield
U.L. Recognized – File No. E45168
Level monitoring and
temperature switch in a
single unit. Intermediate
in size; single-setting
temperature sensor is in
bottom of stem.
Cushioned float and
switch for turbulent
liquids or excessive
vibration. Easily grounded.
Ideal for tank trucks,
construction equipment or
mobile applications.
Small, lightweight, and extremely stable in nonstatic,
highly contaminated liquids. Slosh shielding minimizes
effects of turbulence and helps prevent interference by
foreign material. Bracket-mounted to any convenient
surface.
Dimensions
Wire diagram on page B-21
†L1= Switch actuation level, nominal (based on a liquid specific gravity of 1.0).
LS-270 Series Note: Installed vertically with cable upward. Caution: Elastomer seals in the sensor and cable are subject to deterioration and aging, and
therefore need to be checked regularly. Life expectancy of seals varies with application.
How To Order – Select Part Number based on specifications required.
Notes:
1. See “Electrical Data” on Page X-5 for more information.
2. Switches are not U.L. Recognized or CSA Listed.
3. See Page B-21 for thermostat ratings and wiring diagram. Other temperature settings are available; consult factory.
