LEVEL SWITCHES – SINGLE POINT
www.gemssensors.com
A-12
LEVEL SWITCHES – SINGLE POINT
A-13
LS-30 Series
LS-74780
LS-1900TFE
LS-1700TFE
Series
Number
Min. Liquid
Sp. Gr.
Operating Temperature
Pressure,
PSI,
Max.
Switch*
Part Number
Stem, Mounting
and Other Wetted
Float
Mounting Size
1/4˝ NPT
1/8˝ NPT
LS-30
Polysulfone with 316 S.S.
Retaining Clip
.55
-40°F to +225°F (-40°C to +107.2°C)
50
SPST, 20 VA
46201**
—
SPST, 100 VA
46202**
—
SPDT, 20 VA
46203
—
LS-74780
CPVC
.85
-40°F to +180°F (-40°C to +82.2°C)
15
SPST, 20 VA
74780**
—
LS-1900TFE
Te on
®
.80
-40°F to +300°F (-40°C to +148.9°C)
30
SPDT, 20 VA
133299
—
LS-1700TFE
PTFE
.86
+32°F to +212°F (0°C to +100°C)
25
SPST, 20 VA, N.O.
—
174100
SPST, 20 VA, N.C.
—
174200
1-7/8˝ DIA.
(47.6 mm)
3-3/8˝
(85.7 mm)
5/8˝ HEX
(15.9 mm)
1/4˝ NPT
21/32˝
(16.7 mm)
1-1/4˝
(31.8 mm)†
1-7/8˝
(47.6 mm)
2-23/32˝
(69.1 mm)
POLYMERIC
JACKETED
LEAD WIRES
1-1/2˝ DIA.
(38.1 mm)
3-7/16˝
(87.3 mm)
5/8˝ HEX
(15.9 mm)
1/4˝ NPT
21/32˝
(16.7 mm)
3/4˝
(19.1 mm)†
1-13/16˝
(46.0 mm)
2-25/32˝
(70.6 mm)
PVC JACKETED
LEAD WIRES
2-1/8˝ DIA.
(54 mm)
3-15/32˝
(88.1 mm)
21/32˝ HEX
(16.7 mm)
1/4˝ NPT
13/16˝
(20.6 mm)
.92˝
(22.3 mm)†
1-15/16˝
(49.2 mm)
2-21/32˝
(67.5 mm)
TEFLON JACKETED
LEAD WIRES
®
WIRE. 22 AWG.
TEFLON JACKETED
24˝ TO 26˝
(610 mm to 660 mm)
EXTENDED LENGTH
1/2˝ HEX. REF.
(12.7 mm)
1/8˝ NPT REF.
#174106.
RETAINING
CLIP
#174105.
FLOAT
5/16˝
DIA. REF.
(7.9 mm)
1-1/8˝
DIA. REF.
(28.5 mm)
1-31/32˝ REF.
(50.0 mm)
2-1/2˝ REF.
(63.5 mm)
ACTUATION
LEVEL
5/8˝ REF.
(15.9 mm)
Large Size – Engineered Plastics
Select from these Engineered Plastics for Aggressive or Ultra-Pure Liquids
Each of these series offers unique features. Choose from this selection
when all-plastic material is desirable and tank space is not restricted.
LS-30 Series–
Polysulfone
For water-based liquids,
with limited use in oils
and chemicals. Cost is
suited for high volume
OEM use. Polysulfone
material of construction
complies with FDA food
contact regulations.
LS-74780 –
All CPVC
Particularly well suited
for rough service. Ideal
for use in chemical and
plating applications.
LS-1900TFE
Resists build-up of
foreign material or
sticky media. Float travel
remains uninhibited in
viscous or corrosive
liquids. SPDT switch.
LS-1700TFE
A medium-size solution
for ultra-pure liquid
level sensing. Made
of corrosion resistant
PTFE for low particle
generation.
Dimensions
†L
1
=Switch actuation level, nominal (based on a liquid speci c gravity of 1.0 and N.O. dry circuit–dimension will vary for N.C. circuit).
Common Speci cations
Electrical Termination:
No. 18 AWG, 24˝ L., Lead Wires
(Jacket material is indicated on dimensional drawings, above).
Approvals:
LS-30 Series switches are U.L. Recognized – File No. E45168.
How To Order – Select Part Number based on speci cations required.
*
See “Electrical Data” on Page X-5 for more information.
**
Switch operation is selectable, N.O. or N.C., by inverting the oat on the unit stem. Units are shipped N.O. unless otherwise speci ed.
††
100 VA switches are not U.L. Recognized.
– Stock Items.